Answers
Answer:
0
Step-by-step explanation:
The only value I can see that won't work is a = 0. That value gives you 0 over 0 which has no definite answer at this level. It is best to call such a thing undefined or not permitted.
Related Questions
Using the following grading scale and the following scores calculate the student’s final grade in the class: Tests: 55% Quizzes: 30% Homework: 5% Final Exam 10% Tests: 90 average Quizzes: Scores of [67, 90, 44, 29, 100, 100, 100] Homework: 85 average Final Exam: 98
Answers
The student's final grade in the class is 87.08%.
Calculating the Student's Final Grade:
Step 1: Calculate Individual Category Scores:
Tests: 90% (average)
Quizzes: (67 + 90 + 44 + 29 + 100 + 100 + 100) / 7 = 78.43%
Homework: 85% (average)
Final Exam: 98%
Step 2: Apply Category Weights:
Tests: 90% * 55% = 49.5%
Quizzes: 78.43% * 30% = 23.53%
Homework: 85% * 5% = 4.25%
Final Exam: 98% * 10% = 9.8%
Step 3: Add Category Scores:
49.5% + 23.53% + 4.25% + 9.8% = 87.08%
Therefore, the student's final grade in the class is 87.08%.
what is the solution to −1.2b−5.3≥1.9
Answers
Answer:
If you want me to solve for b then
b ≤ − 6
The solution to the given inequality is b≤-6.
What are inequalities?Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.
The given inequality is -1.2b-5.3≥1.9.
Add 5.3 on both the sides of an inequality, we get
-1.2b≥7.2
Divide -1.2 on both the sides of an inequality, we get
b≤-6
In interval notation: (-∞,-6]
Therefore, the solution is b≤-6.
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if the pet store had 10 more birds the number of dogs would be double the number of birds what number should be on the scale explain how you solved
Answers
Answer:
one that fits
Step-by-step explanation:
#Bird+10 so #dog=2(#birds+10)
Answer:
We are gonna called birds [tex]x[/tex] and dogs [tex]y[/tex]. So, if pet store had 10 more birds the number of dogs would be double, this means that:
[tex]y=2(x+10)[/tex]
In the expression we have 10 more birds [tex]x+10[/tex], and the number of dogs is the double of these birds, which give us the expression.
So, the range of values would be:
If there are 10 birds, there would be 20 dogs.
If there are 11 birds, there would be 22 dogs.
If there are 12 birds, there would be 24 dogs, and so on...
13 birds, 26 dogs.
14 birds, 28 dogs.
All these results are given by the expression we found.
Joey has 8 pairs of socks in his drawer five of them are white what percent of colored socks does Joey have
Answers
Answer:
0.375 or 37.5%
Step-by-step explanation:
To do this you divide 8 by 3 because he has 3 colored socks out of 8 socks.
Need help ASAP!
Write the missing base.
256 + ___ (power 6 with the missing base)
16 = ___ (power 4 with missing base)
Will give brainliest! read carefully.
Thank you ^^
Answers
256 = 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2
= 2⁸
16 = 2 * 2 * 2 * 2
= 2⁴
A rectangle has a length of \sqrt[3]{81} and a width of 3^{\frac{2}{3}} inches. Find the area of the rectangle.
Answers
[tex] \sqrt[3]{81} \times 3^{ \frac{2}{3 } } = \sqrt[3]{ {9}^{2} } \times {3}^{ \frac{2}{3} } = {9}^{ \frac{2}{3} } \times {3}^{ \frac{2}{3} } = \\ 3^{ \frac{4}{3} } \times {3}^{ \frac{2}{3} } = 3^{ \frac{6}{3} } = 9[/tex]
Answer:
The area of the rectangle is 9.
Step-by-step explanation:
The first thing to take into account is that the area of a rectangle is obtained by multiplying its length and width.
[tex]area=length\times width[/tex]
The problem says that the length is [tex]\sqrt[3]{81}[/tex] and the width is [tex]3^{\frac{2}{3}}[/tex]. So, to find the area we must replace the values of length and width into the previous expression.
[tex]area=length\times width[/tex]
[tex]area=(\sqrt[3]{81})\times (3^{\frac{2}{3}})[/tex]
The previous seems to be difficult but with a little of manipulation we can get a result without a calculator.
First step: the term [tex]\sqrt[3]{81}[/tex] could be written as exponential expression.
[tex]area=(81^{\frac{1}{3}})\times (3^{\frac{2}{3}})[/tex]
Second step: the term [tex]3^{\frac{2}{3}}[/tex] could be written in other way.
[tex]area=(81^{\frac{1}{3}})\times ((3^2)^{\frac{1}{3}})[/tex]
Third step: in the same way, the term [tex]81^{\frac{1}{3}}[/tex] could be written in other way taking into account that [tex]81=9^2[/tex].
[tex]area=((9^2)^{\frac{1}{3}})\times ((3^2)^{\frac{1}{3}})[/tex]
Forth step: the two terms must have the same base to apply other exponential rules; for example, the base could be 9.
[tex]area=(9^{\frac{2}{3}})\times (9^{\frac{1}{3}})[/tex]
Fifth step: as both terms have the same base, we must add the exponents and simplify the expression.
[tex]area=9^{\frac{2}{3}}\times 9^{\frac{1}{3}}[/tex]
[tex]area=9^{\frac{2}{3}+\frac{1}{3}}[/tex]
[tex]area=9^{\frac{3}{3}}[/tex]
[tex]area=9^1[/tex]
[tex]area=9[/tex]
Thus, the area of the rectangle is 9.
Seven days ago, I put 60 jelly beans in a bowl. Now there are 4 jelly beans left.
If I ate the same number of jelly beans each day, how many jelly beans did I eat each day?
Get's Brainliest if best answer
Please help ASAP!
Answers
Answer:
You ate 8 jellybeans a day
Step-by-step explanation:
60-4=56
56/7=8
The student ate 8 jelly beans per day, calculated by subtracting the number of jelly beans left from the original amount and dividing by the number of days.
To determine how many jelly beans were eaten each day, we can subtract the number of jelly beans left in the bowl from the original amount and then divide by the number of days that have passed.
If there were originally 60 jelly beans and now there are only 4 left, then 60 - 4 jelly beans have been eaten.
Over the course of 7 days, this amount should be divided by 7 to find the daily consumption.
= 60 jelly beans - 4 jelly beans = 56 jelly beans have been eaten in total.
To find the number eaten per day: 56 jelly beans / 7 days
= 8 jelly beans per day.
Therefore, 8 jelly beans were eaten each day.
Please help me quick! I need this before tomorrow!
Round each number to the nearest tenth.
What is the best estimate for the answer to 26.73 + 89.42?
Answers
Answer:
116.1
Step-by-step explanation:
If you round each decimal to the nearest tenth it would be 26.7 + 89.4 because you round up if it is 6 and above and round down for 5 and below. The rest is just simple addition.
Solve for the compound inequality 6b<24 or 4b+12>4
Answers
6b < 24 divide both sides by 6
b < 4
4b + 12 > 4 subtract 12 from both sides
4b > -8 divide both sides by 4
b > -2
Answer: -2 < b < 4 → b∈(-2, 4)PLEASE HELP 29 POINTS!
What is the difference between direct variation and constant variation?
Answers
Hi,
Direct variation
When two variables quantities have a ratio, then their relationship is called a direct variation.
Constant variation
The constant ratio between two variables quantities is called constant variation.
Mr. Deets is making an array to display 9 pictures. For each pair of different factors, there are two arrays he can make. How many different arrays can Mr. Deets make ? Is the number of arrays odd or even Explain.
Answers
3 arrays - 1 x 9 (or 9 x 1) and 3 x 3
Hence, the number of arrays = 2 x 2 = 4 = even
First, we pair the different factors of 9.
The different factors of 9 are:
(1, 9) and (3, 3)
For each pair, Mr. Deets can make 2 arrays.
So, the total number of arrays that Mr. Deets can make = 2 x 2 = 4 and hence the number of arrays is even.
Answer:
4 arrays,
Number of arrays is even.
Step-by-step explanation:
∵ The possible pairs of two numbers which give 9 after multiplication,
( 3, 3) and (9, 1),
So, the possible array would be,
3 × 3, 9 × 1
Note : 9 × 1 can also be written as 1 × 9,
According to the question,
For each pair of different factors, there are two arrays,
3 × 3 and 9 × 1 are two arrays with no same factor,
Hence, the total arrays = 2 × 2 = 4
Which is an even number.
A water bottle that holds 24 1/2 ounces of water is 3/5 full. Is there enough water in the bottle to fill three glasses with 5 ounces each?
Answers
Answer:
No, there is not enough water.
Step-by-step explanation:
The water bottle holds 24.5 and there is 3/5 of it.
3/5 of 24.5 is 14.7 ounces
You want to fill three glasses with 5 ounces each. Multiply 3 x 5 which gives you 15.
14.7 is less than 15
Subtract 15 from 14.7 and you'll have a negative or not enough so no, it cannot fill three glasses with 5 each.
An equation that expresses a mathematical rule or relationship is a ___.
proportion
conversion factor
formula
ratio
Answers
C. Formula.
The equation that expresses a mathematical rule or relationship is called a formula.
What is a formula?A formula in mathematics is an assertion of a fact, rule, or principle using mathematical symbols. Equations, equalities, identities, inequalities, and asymptotic expressions are a few examples of formulae.
Few examples of formulae are:
(a + b)^2 = a^2 + b^2 + 2ab
(a - b)^2 = a^2 + b^2 - 2ab
(a + b)^3 = a^3 + b^3 + 3ab(a + b)
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A country with an area of 425 square miles has a population of 9,350 residents. Which rate best represents the relationship between the population and the area of the country
Answers
Answer:
22 residents per square mile is the correct answer.
Step-by-step explanation:
One way to find the answer is the following:
The first number to be considered is 425, which is the total amount of square miles.
The second one is 9,350 that represents the amount of residents.
To find the answer, we have to perform the following calculation:
9350%425=22, which is the correct answer.
Step-by-step explanation:
hahaha have a great weekend and happy birthday to you i q and happy birthday really want to get together
Convert 5 square root of a into exponential form?
Answers
Answer:
The answer is: " [tex]5a^\frac{1}{2}[/tex] " .
_____________________________________________
Step-by-step explanation:
______________________________________________
We are asked to convert "5 square root of a" ; into "exponential form".
Note that "5 square root of a" ;
or; " 5 root a " ;
means: " 5 times the {square root of the variable, "a" };
or : " 5 multiplied by the {square root of the variable, "a" }.
_______________________________________________
This can be written as: " [tex]5\sqrt{a}[/tex] " .
_______________________________________________
Note the following property of exponents:
[tex]\sqrt[n]{a^m} = (\sqrt[n]{a})^m = a^m^n[/tex] .
_____________________________________________
So; to write: " √a " ; as an exponent :
______________________________________________
Note:
" [tex]\sqrt{a} = \sqrt[2]{a} = \sqrt[2]{a^1} = (\sqrt[2]{a})^1 = a^\frac{1}{2}[/tex] " .
_______________________________________________
So:
" [tex]\sqrt{a} = a^\frac{1}{2}[/tex] " ;
_______________________________________________
And:
________________________________________________
" [tex]5\sqrt{a} = 5a^\frac{1}{2}[/tex] " .
________________________________________________
→ The answer is: " [tex]5a^\frac{1}{2}[/tex] " .
________________________________________________
Hope this helps!
Best wishes in your academic endeavors
— and within the "Brainly" community!
________________________________________________
what is the definition of exponential decay
Answers
Answer:
When a population or group of something is declining, and the amount that decreases is proportional to the size of the population, it's called exponential decay. In exponential decay, the total value decreases but the proportion that leaves remains constant over time.
Step-by-step explanation:
Answer:
[tex]y =Ae^{-kx}[/tex]
would be the exponential decay function for initial population A and decaly rate is -k.
Step-by-step explanation:
Exponential decay occurs when rate of change of population or any other quantity is proportional to the present population or quantity present
i.e. if y is the population
then dy/dx = -ky where k is a positive constant of proportionality
[tex]\frac{dy}{y} =-kdx\\ln y = -kx+C\\y = e^{-kx+C} =Ae^{-kx}[/tex]
Solve the system of elimination -2x+2y+3z=0 -2x-y+z=-3 2x+3y+3z=5
Answers
Answer:
x = 1 , y = 1 and z = 0
Step-by-step explanation:
-2x+2y+3z=0 ------(1)
-2x-y+z=-3 --------(2)
2x+3y+3z=5 ---------(3)
To find the values of x,y and z
(3) - (2)⇒ 2y + 4z = 2
y + 2z = 1 --------(4)
(1) - (2)⇒ 3y +2z =3 ---(5)
(5) - (4)⇒ 2y = 2
y = 1
Substituting the value of y in (4) we get z =0
Substituting the value of y and z in (1) we get x = 1
Therefore x = 1 , y = 1 and z = 0
y = -0.4x +0.3
in standard form using integers !!!!
Answers
[tex]y + 0.4x = 0.3[/tex]
Multiply by 10
[tex]10y + 4x = 3[/tex]
What is the slop of y=-7
Answers
Answer:
slope of y = -7 is 0
Step-by-step explanation:
y = any number forms a graph of a horizontal line
x = any number forms a graph of a vertical line
For any horizontal line , the slope is always 0
for any vertical line , the graph is always undefined
So for y =-7 we will get a horizontal line at -7 on t
the slope of horizontal line y=-7 is 0
GCF of 35 and 63. Show your work.
Answers
Answer:
Step-by-The GCF of 35 and 63 is 7. To find the GCF, we will start by listing the factors of 35 and listing the factors of 63. We see that the factors that are common to both 35 and 63 are 1 and 7, and the greatest of these is 7. Therefore, the greatest common factor of 35 and 63 is 7.step explanation:
The greatest common factor of the numbers 35 and 63 will be 7.
We may use the prime factorization method to get the greatest common factor (GCF) of 35 and 63.
The two numbers are first factored into their prime factors.
While 63 can be written as 3 * 3 * 7, 35 may be written as 5 * 7.
Next, we determine the common prime factors and calculate each factor's lowest exponent.
The common component in this instance is 7. The GCF of 35 and 63 is thus 7.
The greatest number that divides both 35 and 63 without producing a remainder is the GCF.
More about the greatest common factor link is given below.
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1/4 = z/20 Plzzz i need this done ASAPP!!!!!!! ill give 30 points
Answers
Answer:
z=5
Step-by-step explanation:
1/4=z/20
20*1/4=z
z=5
1/4 of 20=5
as you can see above, you need to do the same thing to the denominator and to the numerator. after finding the multiplier of the fraction, you can easily find the answer.
Can you help me I can’t figure it out!
Answers
Answer:
C, 17.3
Step-by-step explanation:
Mean is the average of the numbers. To get the mean, add all the numbers up, and divide them by how many numbers there were. Let's do that.
(16.8 + 12.3 + 19 + 17.5 + 18.2 + 17.5)/6
Simplify
101.3/6
Simplify.
~16.88
The closest estimate to that is C, 17.3
you can walk 1 1/2 miles in 1/2 an hour what is your average speed
Answers
Answer:
3 miles per hour
Step-by-step explanation:
If you walk 1.5 miles in .5 of an hour you take 1.5 and divide it by .5 of an hour and you get the speed you were walking
Answer:
3 miles per hour
Step-by-step explanation:
As Saturn revolves around the sun, it travels at a speed of approximately 6
miles per second. Convert this speed to kilometers per second. At this speed, how many kilometers will Saturn travel in 2 seconds? In your computations, assume that 1
mile is equal to 1.6 kilometers. Do not round your answers.
Answers
Answer:
Speed = 9.6 km/s
Distance traveled in 2 seconds = 19.2 km
Step-by-step explanation:
Given that revolving speed of the Saturn around the sun = 6 miles per second
We need to convert this speed into kilometers per second.
Given that 1 mile = 1.6 kilometers so plug that into above speed. We get:
Revolving speed of the Saturn around the sun = (6)(1.6) kilometers per second.
Revolving speed of the Saturn around the sun = 9.6 kilometers per second.
Now to find distance travelled in 2 seconds, we just need too multiply the speed by time.
Distance = (9.6)(2)= 19.2 Kilometers.
Hence final answer is:
Speed = 9.6 km/s
Distance traveled in 2 seconds = 19.2 km
Answer:
Speed: 9.6 km/s
Distance traveled in 2 seconds: 19.2 km
Step-by-step explanation:
Speed: S=6 miles per second=6 miles/s
S=(6 miles/s)(1.6 km/1 mile)→S=(6)(1.6) km/s→S=9.6 km/s
S=9.6 km per second, that means in 1 second the distance traveled is 9.6 km, then in 2 seconds the distance traveled is 2(9.6 km)=19.2 km or
S=d/t
Distance: d
Time: t
Replacing the known values:
9.6 km/s=d/(2 s)
Solving for d: Multiplying both sides of the equation by 2 s:
(2 s)(9.6 km/s)=(2 s)d/(2 s)
19.2 km=d
d=19.2 km
Based on the graph below, what are the solutions to the equation f(x) = g(x)?
A. x = −2.4, 1.4, 3.9
B. x = −2.4, 0.25, 1.4
C. x = −2, 2, 3
D. x = −2, 1, 3
Answers
Look at the picture.
f(x) = g(x) - x for which the graphs intersect.
Answer: A. x = -2.4, x = 1.4, x = 3.9Answer by YourHope:
HI! :)
Based on the graph below, what are the solutions to the equation f(x) = g(x)?
A. x = -2.4, x = 1.4, x = 3.9!
:)
pls help with number 2 will give brainliest
Answers
Answer:41% i think i am pretty sure
Step-by-step explanation:
don't have one
The difference of 11 and 4 times a number equals 3
Answers
Hello there!
An equation to model this situation is 11 - 4n = 3.
The unknown number has a value of 2.
Okay, so let's start by breaking down the question - we'll use n to model the unknown number.
The difference of 11 and 4 times a number equals 3
This means we are using subtraction.
The difference of 11 and 4 times a number equals 3
This means the numbers we are subtracting are 11 and 4n. (11 - 4n)
The difference of 11 and 4 times a number equals 3
This means our equation is equal to 3. (11 - 4n = 3)
Now we solve for N.
11 - 4n = 3
Start by subtracting 11 from both sides to work to isolate N.
11 - 11 - 4n = 3 - 11
-4n = -8
Next, divide both sides by -4 to finish isolating n.
-4/-4n = -8/-4
n = 2
I hope this helped you and have a great day!
The number in the equation is 2, as that when multiplied by 4 results in 8, and when subtracted from 11 gives 3.
Explanation:The question is looking for a number that, when multiplied by 4 and subtracted from 11, equals 3. We can represent this with the equation 11 - 4x = 3. To solve for x, we first move 4x to other side by adding 4x to both sides. This gives us 11 = 4x + 3. Then, we subtract 3 from both sides which gives us 8 = 4x. Finally, to solve for x, we divide both sides by 4. Therefore, x = 8 / 4 = 2.
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a used car lots runs sales at the end of the year to reduce inventory this year the sale price is 15% less than the regular price if the regular price of a car 12,000, what is the sale price of the car
Answers
Answer:
$10,200
Step-by-step explanation:
12,000x 0.85 = $10,200
or 12,000 x 0.15 = 1,800
$12,000 - $1,800 - $10,200
What is the remainder in the synthetic division problem below?https://brainly.com/question/add?entry=1642&task_content=What+is+the+remainder+in+the+synthetic+division+problem+below%3F
Answers
Answer:
could you be more specific? link doesn't take me anywhere
A leak in a water tank causes the water level to decrease by 3.6×10−23.6×10−2 millimeters each second. About how many millimeters does the water level in the tank decrease in 5 hours, or 1.8×1041.8×104 seconds? Drag and drop the values to the boxes to express the answer in scientific notation.
Answers
Answer:
[tex]6.48\times 10^{2}[/tex] millimeters.
Step-by-step explanation:
We have been given that a leak in a water tank causes the water level to decrease by [tex]3.6\times 10^{-2}[/tex] millimeters each second.
To find the decrease in water level in 5 hours let us multiply water decrease in one second by number of seconds in 5 hours.
[tex]\text{The decrease in water level in the tank}=3.6\times 10^{-2} \times 1.8\times 10^4[/tex]
Using the exponent product rule let us add the exponents with same base (10).
[tex]\text{The decrease in water level in the tank}=3.6 \times 1.8\times 10^{-2+4}[/tex]
[tex]\text{The decrease in water level in the tank}=3.6 \times 1.8\times 10^{2}[/tex]
[tex]\text{The decrease in water level in the tank}=6.48\times 10^{2}[/tex]
Therefore, the water level in tank decreased [tex]6.48\times 10^{2}[/tex] millimeters in 5 hours.