A gully can fly at a speed of 22 miles per hour about how many feet per hour can the gull fly?

Answers

Answer 1
the gully can fly 116,160 feet in 22 miles. the gully can fly 5280 miles in one hour.

Related Questions

The sum of two consecutive terms in the arithmetic sequence 3​, 6​, 9​, 12​, ... is 303​; find these two terms.
The first consecutive term of the arithmetic sequence is ?
The second consecutive term of the arithmetic sequence is ?

Answers

1st consecutive term is x. 2nd consecutive term is (x + 3)
x + x + 3 = 303
2x + 3 = 303
2x = 303 - 3
2x = 300
x = 300/2
x = 150

x + 3 = 150 + 3 = 153

so ur 2 numbers are 150 and 153

Final answer:

The first consecutive term of the arithmetic sequence that sums to 303 is 150. The second consecutive term is 153. We found this by setting up an equation for the sum of two consecutive terms and solving for the first term.

Explanation:

To find the two consecutive terms in the arithmetic sequence 3, 6, 9, 12, ... that sum up to 303, we first need to understand the properties of an arithmetic sequence. The given sequence has a common difference of 3 (that is, each term is 3 more than the previous term). Let's denote the first of these two consecutive terms as a. Therefore, the next term would be a + 3 (since the common difference is 3).

We are given that the sum of these two terms is 303, so we can write an equation:

a + (a + 3) = 303

Combining like terms, we get:

2a + 3 = 303

Subtracting 3 from both sides gives:

2a = 300

Dividing both sides by 2 gives:

a = 150

So, the first term is 150 and the second term, being a + 3, is 153.

How much interest is gained if $250 is deposited in your bank account at the end of the year for each of the next 7 years? savings account pays 8% compounded annually?

Answers

Compounded Interest after 7 years will be $744.50

What is the product of 119 thousandths times 10?
a. 119 hundreths
b. 119 thousands
c. 119 tenths

Answers

the answer is A becaues 119 thousand times 10 equals 1190000
then you divide it by 100 to get A.119 hunderths

Answer:

119 hundreths

Step-by-step explanation:

To Find: What is the product of 119 thousandths times 10?

Solution:

Thousandths can be represented in the fraction form as[tex]\frac{1}{1000}[/tex]

So, 119 thousandths = [tex]\frac{119}{1000}[/tex]

Now to find the product of 119 thousandths times 10

[tex]\Rightarrow \frac{119}{1000} \times 10[/tex]

[tex]\Rightarrow \frac{119}{100} [/tex]

Now hundreths  can be represented in the fraction form as[tex]\frac{1}{100}[/tex]

So, [tex]\Rightarrow \frac{119}{100} [/tex]  = 119 hundreths.

Hence the product of 119 thousandths times 10 is 119 hundreths.

Thus Option A is True.

If log6⁡⁡3+log6⁡⁡72=x, what is the value of x?

Answers

[tex]\bf \textit{logarithm of factors}\\\\ log_{{ a}}(xy)\implies log_{{ a}}(x)+log_{{ a}}(y) \\\\\\ \textit{Logarithm Change of Base Rule}\\\\ log_{{ a}}{{ b}}\implies \cfrac{log_{{ c}}{{ b}}}{log_{{ c}}{{ a}}}\\\\ -------------------------------\\\\ log_6(3)+log_6(72)=x\implies log_6(3\cdot 72)=x\implies log_6(216)=x \\\\\\ \cfrac{log(216)}{log(6)}=x\impliedby \textit{using the change of base rule}[/tex]

recall that, log <--- with no apparent base, implies base10, so you can just plug that in your calculator

for the change of base rule, it doesn't really matter what base you use, so long is the same above and below, it just so happen, that we used base10 in this case, but could have been anything, same result.

A stocker put 57 boxes of detergent on the shelves in 2 minutes. After 5 minutes, he had put 117 boxes on the shelves. How many boxes were on the shelves when he started?

Answers

57 boxes of detergent on the shelves in 2 minutes
After 5 minutes, he had put 117 boxes on the shelves

117 - 57 = 60 (60 boxes of detergent for 3 minutes)
60/3 = 20 (20 boxes of detergent per minute)
so

20 x 5 = 100 boxes of detergent 

117 - 100 = 17 boxes

answer
17 boxes of detergent were on the shelves when he started
(2,57)(5,117)
slope = (117 - 57) / (5 - 2) = 60/3 = 20

y = mx + b
slope(m) = 20
(2,57)...x = 2 and y = 57
sub and find b, the y int
57 = 20(2) + b
57 = 40 + b
57 - 40 = b
17 = b

equation is : y = 20x + 17....with x being the number of minutes, and 17 being the number of boxes on the shelf when he started

A group of 11 friends ordered four pizzas to share. They divided the pizzas up evenly and all ate the same amount. Express in decimal form the proportion of a pizza that each friend ate.

Answers

4/11, 4 pies per person = 0.363636 - repeating

Final answer:

Each friend ate approximately 0.3636 of a pizza when the four pizzas were divided evenly among 11 friends.

Explanation:

The student's question involves dividing four pizzas evenly among 11 friends, so each person gets the same proportion of pizza. We need to convert this proportion into decimal form to answer the question.

To find the proportion of a pizza that each friend ate, we calculate 4 pizzas ÷ 11 friends. So, each friend ate ≈ 0.3636 of a pizza. We arrived at this by dividing 4 by 11, which yields a repeating decimal, so we round it to four decimal places to express it accurately.

This value represents the proportion of pizza each person ate when the pizzas were divided equally.

What is the next value.
4 D 7 G 10 J 13

Answers

Numbers means the number of letter in the alphabet. D is the fourth letter, G is the seventh letter, J is the 10-th letter.
The next value ​​in the row is M (thirteenth letter).

The next value in the sequence is 16, following an increment of 3 in each step.

The next value in the sequence is 16.

The sequence increments by 3 starting from 4 (4, 7, 10, 13, ...)

Therefore, the next value after 13 would be 13 + 3 = 16.

jim is running on a trail that is 5/4 of a mile long. so far he has run 2/3 of the trail. how many miles has he run so far

Answers

(5/4) / (2/3)
= 5/6

therefore: he has run 5/6 miles so far

2s + 5 greater than or equal to 49

Answers

s is greater than or equal to 22

The value of s is greater or equal to 22.

What is inequality?

It shows a relationship between two numbers or two expressions.

There are commonly used four inequalities:

Less than = <

Greater than = >

Less than and equal = ≤

Greater than and equal = ≥

We have,

2s + 5 greater than or equal to 49.

This can be written as,

(2s + 5) ≥ 49

Solve for s.

2s + 5 ≥ 49

2s ≥ 49 - 5

2s ≥ 44

s ≥ 22

Thus,

s is greater than or equal to 22.

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If a boatman rows his boat 35km up stream and 55km downstream in 12 hours and he can row 30km upstream and 44 km downstream in 10hr , then the speed of the stream and that of the boat in still water

Answers

To answer this item, we let x be the speed of the boat in still water. The speed of the current, we represent as y.

When the boat travels upstream or against the current, the speed is equal to x – y and x + y if it travels downstream or along with the current.

The time it takes for the an object to travel a certain distance is calculated by dividing the distance by the speed.

First Travel:    35 / (x – y)   + 55 / (x + y) = 12

Second travel: 30 / (x – y)   + 44 / (x + y) = 10

Let us multiply the two equations with the (x-y)(x+y)

This will give us,

              35(x + y) + 55(x – y) = 12(x-y)(x+y)

              30(x + y) + 44(x – y) = 10(x-y)(x+y)

Using dummy variables:

Let a = x + y and b be x – y

                35a + 55b = 12ab

                30a + 44b = 10ab

From the first equation,

                     b = 35a/(12a – 55)

Substituting to the second equation,

                30a + 44(35a/(12a – 55)) = 10a(35a/(12a-55))

The value of a is 11.

              b = 35(11)/(12(11) – 55))

              b = 5

Putting back the equations,

        x + y = 11

       x – y = 5

Adding up the equations give us,

  2x = 16

    x = 8 km/hr

The value of x, the speed of the boat in still water, is 8 km/hr. 

Answer:

speed of the stream = 3 km/hr

and speed of boat in still water= 8 km/hr

Step-by-step explanation:

Let s be the speed of the boat upstream

and s' be the speed of the boat downstream.

We know that:

[tex]Time=\dfrac{distance}{speed}[/tex]

Hence, we get:

  [tex]\dfrac{35}{s}+\dfrac{55}{s'}=12[/tex]

and

[tex]\dfrac{30}{s}+\dfrac{44}{s'}=10[/tex]

Now, let

[tex]\dfrac{1}{s}=a\ and\ \dfrac{1}{s'}=b[/tex]

Hence, we have:

[tex]35a+55b=12--------------(1)\\\\\\and\\\\\\30a+44b=10--------------(2)[/tex]

on multiplying equation (1) by 4 and equation (2) by 5 and subtract equation (1) from (2) we get:

[tex]a=\dfrac{1}{5}[/tex]

and by putting value of a in (2) we get:

[tex]b=\dfrac{1}{11}[/tex]

Hence, speed of boat in upstream= 5 km/hr

and speed of boat in downstream= 11 km/hr

and we know that:

speed of boat in upstream=speed of boat in still water(x)-speed of stream(y)

and speed of boat in downstream=speed of boat in still water(x)+speed of stream(y)

Hence, we get:

[tex]x-y=5\\\\\\and\\\\\\x+y=11[/tex]

Hence, on solving the equation we get:

[tex]x=8[/tex]

and y=3

Hence, we get:

speed of the stream = 3 km/hr

and speed of boat in still water= 8 km/hr

What is the value of 3×5+6×2+1

Answers

Just do [tex]PEMDAS[/tex] 

[tex]Parentheses \\ Equations \\ Multiplication \\ Addition \\ Subtraction[/tex]

Looks like we're doing: [tex]multiplication [/tex] and [tex]addition [/tex]

[tex]3(5) + 6(2) + 1 \\ 3(5)= 15 \\ 15 + 6(2) = \\ 6(2) =12 \\ 15 + 12 = 27 \\ 27 + 1 = 28 \\ Answer: 28 [/tex]

~ [tex]MeIsKaitlyn :) [/tex]

                                 Good luck on your assignment and enjoy your day! 

If log65 = 1.812, what is the value of log 1000 65? a. 0.1812 b. 0.00182 c. 0.604 d. 0.0604

Answers

We know that : log 65 = 1.812 or: log (10) 65 = 1.812 ( logarithm with the base of 10 )
log (1000) 65 = log ( 10^3 ) 65 = 1/3 * log (10) 65 =  
/ this is because the logarithmic rule is:  log(a^b) x = 1/b * log (a) x /
= 1/3 * 1.812 = 0.604
Answer: c. 0.604

Answer:

0.604 on a p e x

"if a snowball melts so that its surface area decreases at a rate of 1 cm 2 min, find the rate at which the diameter decreases when the diameter is 10 cm." (stewart 249) stewart, james. single variable calculus, 8th edition. cengage learning, 20150101. vitalbook file.

Answers

We need to find the rate of the diameter, which we can denote as d(d)/dt.

[tex]\frac{dA}{dt} = \frac{dA}{dx} \cdot \frac{dr}{dt}[/tex]
[tex]\frac{dA}{dt} = -1[/tex], since it is decreasing.

[tex]-1 = \frac{dA}{dr} \cdot \frac{dr}{dt}[/tex]

[tex]A = 4\pi \cdot r^{2}[/tex]
[tex]\frac{dA}{dr} = 8\pi \cdot r[/tex]

At r = 5:
[tex]\frac{dA}{dr} = 40 \pi[/tex]

[tex]\frac{dr}{dt} = -\frac{1}{40 \pi}[/tex]

Since the diameter is twice the radius and this is simply the rate at which the radius is decreasing, then the diameter will be decreasing twice as fast:

[tex]\frac{d(d)}{dt} = -\frac{1}{20\pi}[/tex]

Thus, the diameter is decreasing at a rate of 1/(20pi) cm/min.

Mrs. Jackson has $7,000 to invest. If she invests part at 6% simple annual interest and part at 8% simple annual interest, she will get an annual return of $520. How much should she invest at 8%?

Answers

let's say she invest the amounts of "a" at 6% and "b" at 8%.

well, she has to invest on both amounts, 7000 total, thus a + b = 7000

how much is 6% of a? well, (6/100) * a, or 0.06a.
how much is 8% of b? well, (8/100) * b, or 0.08b.

now, we know the annual return in interest from those two amounts is 520.
thus 0.06a + 0.08b = 520

[tex]\bf \begin{cases} a + b = 7000\implies \boxed{a} = 7000-b\\ 0.06a + 0.08b = 520\\ --------------\\ 0.06\left( \boxed{7000 - b} \right)+0.08b = 520 \end{cases}[/tex]

solve for "b".

A spring is oscillating so that its length is a sinusoidal function of time. Its length varies from a minimum of 10 cm to a maximum of 14 cm. At t=0 seconds, the length of the spring was 12 cm, and it was decreasing in length. It then reached a minimum length at time t= 1.2 seconds. Between time t=0 and t=8 seconds, how much of the time was the spring longer than 13.5 cm?

Answers

Let the x(t) represent the motion of the spring as a function of time, t.

The length of the oscillating spring varies from a minimum of 10 cm to a maximum of 14 cm.
Therefore its amplitude is A = (14 - 10)/2 = 2.

When t = 0 s, x = 12 cm.
Therefore the function is of the form
x(t) = 2 sin(bt) + 12

At t=0, x(t) is decreasing, and it reaches its minimum value when t = 1.2 s.
Therefore, a quarter of the period is 1.2 s.
The period is given by
T/4 = 1.2
T = 4.8 s

That is,
b = (2π)/T = (2π)/4.8 = π/2.4 = 1.309

The function is
x(t) = 2 sin(1.309t) + 12
A plot of x(t) is shown below.

When x(t) = 13.5, obtain
2 sin(1.309t) + 12 = 13.5
sin(1.309t) = (13.5 - 12)/2 = 0.75
1.309t = sin⁻¹ 0.75 = 0.8481 or π - 0.8481
t = 0.8481/1.309 or t = (π - 0.8481)/1.309
  = 0.649 or 1.751
The difference in t is 1.751 - 0.649 = 1.1026.

This difference occurs twice between t=0 and t=8 s.
Therefore the spring length is greater than 13.5 cm for 2*1.1026 = 2.205 s.

Answer:
Between t=0 and t=8, the spring is longer than 13.5 cm for 2.205 s.

State whether each situation involves a combination or a permutation.

4 of the 20 radio contest winners selected to try for the grand prize

5 friends waiting in line at the movies

6 students selected at random to attend a presentation

a) permutation, combination, permutation
b) combination, permutation, permutation
c) combination, permutation, combination
d) permutation, combination, combination

Answers

Answer:

4 of the 20 radio contest winners selected to try for the grand prize : C

5 friends waiting in line at the movies: C

6 students selected at random to attend a presentation: P

Final answer:

The scenarios illustrate combination when order does not matter (selecting contest winners and student attendees) and permutation when order matters (friends in line). The correct sequence is combination, permutation, combination.

Explanation:

In the context of the scenarios provided, we need to differentiate whether the situations are examples of combinations or permutations. A permutation is an arrangement of objects where order matters, while a combination is a selection of objects where order does not matter.

4 of the 20 radio contest winners selected to try for the grand prize - This is a combination, as the order in which the winners are selected is not relevant.5 friends waiting in line at the movies - This is a permutation, as the order in which the friends are lined up matters.6 students selected at random to attend a presentation - This is a combination, as the order of selection does not impact which students attend.

Thus, the correct answer to the sequence of scenarios is: combination, permutation, combination, which correlates with option c.

A line passes through (−2,7) and (3,2). Find the slope-intercept form of the equation of the line. Then fill in the value of the slope, m, and the value of the y-intercept

Answers

The form will be y = mx + b, where m is the slope, b is the y-intercept

m = (2-7) / (3+2) = -1

b = 3 +2 = 5

So y = -x + 5
Final answer:

The equation of line passing through points (-2,7) and (3,2) is y = -x + 5. The slope, m, is -1. The y-intercept, b, is 5.

Explanation:

The subject matter here is finding the equation of a line in slope-intercept form, which is expressed as y = mx + b. Here, 'm' is the slope of the line and 'b' is the y-intercept. The slope, m, can be found using the formula: m = (y2 - y1)/(x2 - x1). Applying the coordinates given, (-2,7) and (3,2), we find the slope, m = (2 - 7) / (3 - (-2)) = -5 / 5 = -1.

Then, substituting m, x, and y into the equation, we get the y-intercept. Using the point (-2,7), we have: 7 = -1*-2 + b -> 7 = 2 + b -> b = 7 - 2 = 5. So the y-intercept, b, is 5. Therefore, the equation of the line in slope-intercept form is y = -x + 5.

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How many 2n-digit positive integers can be formed if the digits in odd positions (counting the rightmost digit at position 1) must be odd and the digits in even positions must be even and positive?

Answers

Final answer:

To find the number of 2n-digit integers where odd position digits are odd, and even position digits are even and positive, we calculate based on the choices for each position, giving us a result of (5^n) * (4^n).

Explanation:

We encounter a combinatory problem in working out how many 2n-digit positive integers can be formed if the digits in odd positions must be odd and the digits in even positions must be even. Before proceeding, it's important to grasp the concept of positional numbering, where the rightmost digit is considered at position 1, and the counting proceeds from right to left.

For a 2n-digit positive integer, i.e., an integer with an even number of digits, there will be n digits at odd positions and n digits at even positions. For the odd positions, the digits can be any one of the five odd integers (1, 3, 5, 7, 9) and for the even positions, the digits can be any one of the four even positive integers (2, 4, 6, 8) because 0 is excluded as the question mentions they should be positive.

Therefore, for each position, we have a choice of five odd integers or four even integers. Since there are n odd positions and n even positions, we end up with (5^n) * (4^n) total possibilities or combinations.

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The total number of valid 2n-digit positive integers, where digits in odd positions must be odd and digits in even positions must be even, is calculated using the formula 5ⁿ * 4ⁿ.

To solve this problem, we need to consider the constraints given: digits in odd positions must be odd and digits in even positions must be even. Let's break down the problem step-by-step:

We have 2n-digit numbers. Therefore, there are n odd positions and n even positions.For the odd positions (1st, 3rd, 5th, ....., 2n-1), each digit can be 1, 3, 5, 7, or 9. So, there are 5 choices for each position.For the even positions (2nd, 4th, 6th, ....., 2n), each digit can be 2, 4, 6, or 8. There are 4 choices for each position.To find the total number of such 2n-digit positive integers, multiply the number of choices for all positions:

Total combinations = (Number of choices for odd positions) n * (Number of choices for even positions) n = 5ⁿ * 4ⁿ

This is the formula to calculate the number of valid 2n-digit integers under the given constraints.

John’s gross pay for the week is $500. He pays 1.45 percent in Medicare tax, 6.2 percent in Social Security tax, 2 percent in state tax, 20 percent in federal income tax, and $20 as an insurance deduction. He does not have any voluntary deductions. What is John’s net pay for the week?

Answers

gross pay = 500

deductions :
medicare tax : 0.0145(500) = 7.25
S.S tax : 0.062(500) = 31.00
sales tax : 0.02(500) = 10.00
income tax : 0.2(500) = 100
insurance = 20
total deductions : 7.25 + 31 + 10 + 100 + 20 = 168.25

gross pay - deductions = net pay
500 - 168.25 = net pay
331.75 = net pay <===
Final answer:

John's net pay is calculated by subtracting deductions for Medicare, Social Security, state and federal taxes, and insurance from his gross pay of $500. The total deductions amount to $168.25, resulting in a net pay of $331.75.

Explanation:

Calculation of John's Net Pay

To calculate John's net pay, we need to subtract all the deductions from his gross pay. Since his gross pay is $500, we will apply the following deductions:

Medicare tax: 1.45% of $500 = $7.25

Social Security tax: 6.2% of $500 = $31.00

State tax: 2% of $500 = $10.00

Federal income tax: 20% of $500 = $100.00

Insurance deduction: $20.00

Add up all deductions: $7.25 (Medicare) + $31.00 (Social Security) + $10.00 (State Tax) + $100.00 (Federal Tax) + $20.00 (Insurance) = $168.25

John's net pay is therefore calculated by subtracting the total deductions from his gross pay: $500.00 - $168.25 = $331.75.

if the divisor is 40 what is the least 3 digit number dividend that would give a remainder of 4

Answers

The answer to this question is:

If the divisor is 40 what is the least 3 digit number dividend that would give a remainder of 4"124/40"

Hope this help, Lukifer677
Your Welcome :)
where the divisor is 40 ... 40 x 3 = 120, this is a 3 digit number and the least 3 digit number

The Sugar Sweet Company is going to transport its sugar to market. It will cost $5250 to rent trucks, and it will cost an additional $175 for each ton of sugar transported. Let C represent the total cost (in dollars), and let S represent the amount of sugar (in tons) transported. Write an equation relating C to S, and then graph your equation using the axes below.

Answers

c(s)=175s+5250

So to graph this you only need two points because it is a linear function and the velocity is constant.

When s=0, c=5250, so you have the point (0, 5250).  The you can just use the next point, (1, 5425).  Now you can connect the two dots and extend as far upward and to the right as necessary.  Do not go to the left and down as negative s values have no meaning to this real world problem as sugar cannot be negatively shipped :P
Final answer:

The linear equation formed is C = 5250 + 175S, where C is the total cost and S is the amount of sugar in tons. This expresses the cost for Sugar Sweet Company to transport its sugar to the market, beginning from a fixed cost of $5250 with an additional $175 charged per ton of sugar transported.

Explanation:

The question involves the creation of a linear equation that represents the total cost, C, of transporting sugar. We are told the initial cost of renting trucks is $5250 and there's an additional cost of $175 for each ton of sugar, S.

Therefore, we can write the equation as: C = 5250 + 175S.

To graph this equation, start at the point (0, 5250) on the y-axis which represents the initial cost. The slope of the line is 175, which means for each ton of sugar transported, the cost increases by $175. From the starting point, you can plot other points moving up vertically 175 units for each unit moved to the right horizontally.

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1 1 2 4 3 9 4 what is the next number

Answers

The answer is 16. 1^2 is 1, 2^2 is 4, 3^2 is 9, and 4^2 would be 16. 

what is the gcf of 120 and 72

Answers

Hello there!

The GCF acronym between two or more numbers means the "greatest common factor."
The greatest common factor means the highest factor two numbers have in common.
Let's factor out our numbers.

120;
1 x 120
2 x 60
3 x 40
5 x 24
6 x 20
8 x 15
10 x 12

72;
1 x 72
2 x 36
3 x 24
4 x 18
6 x 12
8 x 9

Now, let's look at the highest factors that are in common between these two numbers.

The highest factor is 12, which is your GCF.

I hope this helps!

What the answer to this question?

Answers

volume = (1/3)*PI*(r1^2+r1*r2+r2^2)*h

 h=10

r1=5

r2=2

= 408.41 cubic inches

 round off answer as needed.

Adam can spend a maximum of $252 on office supplies. Each ream of paper costs $6. Each ink cartridge costs $18. Which of the following graphs represents the possible combinations of paper and ink cartridges that he may buy? *Graph pictures below*

Answers

Your answer is A.
If she just bought ink cartridges she could buy 14.
252 / 18 = 14
If she just bought paper she could buy 42 reams.
252 / 6 = 42

Answer:

Option A The graph in the attached figure

Step-by-step explanation:

Let

x-----> the number of ream of paper

y-----> the number of ink cartridge

we know that    

[tex]6x+18y\leq 252[/tex] ----> inequality that represent the possible combinations of paper and ink cartridges that Adam may buy

using a graphing tool

the solution is the triangular shaded area

see the attached figure

Rationalize the denominator of square root of negative 16 over open parentheses 1 plus i close parentheses plus open parentheses 6 plus 3 i.

Answers

[tex]\bf \cfrac{\sqrt{-16}}{(1+i)+(6+3i)}\implies \cfrac{\sqrt{-1\cdot 16}}{1+i+6+3i}\implies \cfrac{\sqrt{-1}\cdot \sqrt{16}}{7+4i} \\\\\\ \cfrac{i\cdot \sqrt{4^2}}{7+4i}\implies \cfrac{4i}{7+4i}\impliedby \begin{array}{llll} \textit{now, we'll multiply by the}\\ \textit{conjugate of the denominator} \end{array}\\\\ -------------------------------\\\\[/tex]

[tex]\bf \textit{and recall }\textit{difference of squares} \\ \quad \\ (a-b)(a+b) = a^2-b^2\qquad \qquad a^2-b^2 = (a-b)(a+b)\\\\ \textit{also recall that }i^2=-1 \\\\ -------------------------------\\\\[/tex]

[tex]\bf \cfrac{4i}{7+4i}\cdot \cfrac{7-4i}{7-4i}\implies \cfrac{4i(7-4i)}{(7+4i)(7-4i)}\implies \cfrac{28i-16i^2}{7^2-(4i)^2} \\\\\\ \cfrac{28i-16(-1)}{49-(4^2i^2)}\implies \cfrac{28i+16}{49-[16(-1)]}\implies \cfrac{16+28i}{49+16}\implies \cfrac{16+28i}{65} \\\\\\ \cfrac{16}{65}+\cfrac{28i}{65}[/tex]

Suppose S and T are mutually exclusive events. Find P(S or T) if P(S) = 65% and P(T) = 7%.

a. 4.55%
b. 72%
c. 58%
d. 455%

Answers

When you have two mutually exclusive events, to find the probability of one or another, you add the probabilities.
65+7=72
Final answer: B

Answer: P(S\cup T)=72%

Step-by-step explanation:

We are given that S and T are mutually exclusive events.

Therefore, the intersection of both the events must be 0.

i.e. [tex]p(S\cap T)=0[/tex]

P (S) = 65% and P(T) = 7%

We know that P(S or T)=[tex]P(S\cup T)=P(S)+P(T)-P(S\cap T)[/tex]

[tex]\Rightarrow P(S\cup T)=65\%+7\%=72\%[/tex]

Hence, P(S\cup T)=72%

Write an algebraic expression which represents the volume of a box whose width is 4y, height is 6y and length is 3y + 1.

Answers

The correct expression is: 72y^3

what is 1/3m-1-1/2n when m=21 and n=12

Answers

((1/3)(21)-1-(1/2)(12))=0

Answer:

Value of the expression is 0

Step-by-step explanation:

[tex]\frac{1}{3} m -1-\frac{1}{2} n[/tex]

Given the value of m and n

m= 21  and n= 12

We plug in the value of m  and n in the given expression

[tex]\frac{1}{3} m -1-\frac{1}{2} n[/tex]

[tex]\frac{1}{3}(21) -1-\frac{1}{2}(12)[/tex]

[tex]\frac{21}{3} -1-\frac{12}{2}[/tex]

[tex]7-1-6= 0[/tex]

So the value of given expression is 0 when we plug in the values of m  and n

If thewronskian w of f and g is 3e4t,and if f(t) = e2t,find g(t).

Answers

[tex]W(f(x),g(x))=\begin{vmatrix}f(x)&g(x)\\f'(x)&g'(x)\end{vmatrix}=f(x)g'(x)-g(x)f'(x)[/tex]

We have [tex]f(t)=e^{2t}\implies f'(t)=2e^{2t}[/tex], so

[tex]W(f(t),g(t))=e^{2t}g'(t)-2e^{2t}g(t)=3e^{4t}[/tex]
[tex]\implies e^{-2t}g'(t)-2e^{-2t}g(t)=3[/tex]
[tex]\implies\dfrac{\mathrm d}{\mathrm dt}[e^{-2t}g(t)]=3[/tex]
[tex]\implies e^{-2t}g(t)=\displaystyle\int3\,\mathrm dt[/tex]
[tex]\implies e^{-2t}g(t)=3t+C[/tex]
[tex]\implies g(t)=3te^{2t}+Ce^{2t}[/tex]

where [tex]C[/tex] is any arbitrary constant.
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