Solve equation for z

Solve Equation For Z

Answers

Answer 1

Answer:

z = 7

Step-by-step explanation:

9z + 4 / 5 - 8 = 5.4


Add 8 to both sides.


9z + 4 / 5 = 13.4

Multiply 5 by both sides.


9z + 4 = 67


Subtract 4 from both sides.


9z = 63


Divide both sides by 9.


z = 7

Answer 2

Answer:

7 (rounded up)

Step-by-step explanation:

9z+4/5=13.5

Multiply both sides by 5

9z+4=67.5

Subtract both sides by 4

9z=63.5

Divide both sides by 9

z=7 (rounded up)


Related Questions

Yogesh has 3 quarters, 1 dime, and 2 pennies

Answers

The answer is 87

How:
quarter = 25¢
dime= 10¢
penny= 1¢

25×3=75
10×1=10
1×2=2

Add them all up

75
+10
+ 2 =87

Answer: Yoghes has $0.87

Step-by-step explanation: We want to know the total amount of money that Yogesh has:

each quarter values 25¢, a dime values 10¢, and a penny values 1¢

(or the values can be written as $0.25, $0.10 and $0.01 respectively)

Yogesh has 3 quarters, so this means he has: 3*$0.25 = $0.75

he has 1 dime, so in dimes, he has: $0.10

he has 2 pennies, so in pennies, he has: 2*$0.01 = $0.02

If we sum up the 3 amounts, we have:

Total = $0.75 + $0.10 + $0.02 = $0.87

A triangle with side lengths of 11, 13, and 15 is a scalene triangle. True False

Answers

Answer:

True

Hope it helps!!


The answer is true

Hopes this helps

m% of n is what percent of p?
FIND FOR PERCENT

Answers

[tex]\( m\% \) of \( n \) is \( \frac{{m \times n}}{{p}}\% \) of \( p \).[/tex]

To find what percentage m% of n is of p, you would calculate:

[tex]\[ \text{Percentage} = \frac{{(m\% \text{ of } n)}}{p} \times 100\% \][/tex]

Substituting [tex]\( m\% \) of \( n \) with \( \frac{m}{100} \times n \), t[/tex]he formula becomes:

[tex]\[ \text{Percentage} = \frac{{\frac{m}{100} \times n}}{p} \times 100\% \][/tex]

Simplify the expression:

[tex]\[ \text{Percentage} = \frac{{m \times n}}{{100 \times p}} \times 100\% \][/tex]

[tex]\[ \text{Percentage} = \frac{{m \times n}}{{p}}\% \][/tex]

So,[tex]\( m\% \) of \( n \) is \( \frac{{m \times n}}{{p}}\% \) of \( p \).[/tex]

Vector u has its initial Point at (15,22) and it’s terminal point at (5,-4)

Answers

Final answer:

The position vector of vector u is (-10, -26). The magnitude of vector u is sqrt(776). The direction of vector u is 68.2 degrees.

Explanation:

The position vector of vector u can be found by subtracting the initial point from the terminal point. So, the position vector of u is (5-15, -4-22) = (-10, -26).

The magnitude of vector u can be found using the distance formula, which calculates the length of a vector. The formula is: magnitude = sqrt(x^2 + y^2), where x and y are the components of the vector. So, for vector u, the magnitude is: sqrt((-10)^2 + (-26)^2) = sqrt(100 + 676) = sqrt(776).

The direction of vector u can be found using trigonometry. The direction angle (theta) is given by tan(theta) = y/x. So, for vector u, the direction angle is: tan(theta) = (-26)/(-10) = 2.6. Converting to degrees, theta = arctan(2.6) = 68.2 degrees.

Suppose you have a 1/10 chance of winning with a scratch-off lottery ticket. If you buy 3 tickets, what is the probability of winning with all 3

Answers

You would do 1/10^3 so a 1and 1000th chance

Answer:

0.001

Step-by-step explanation:

We are given that

Suppose you have the probability of winning with a scratch -off lottery ticket,P(A) =[tex]\frac{1}{10}[/tex]

Probability:It is defined as the possibility of an event that is occurred or not.

It is obtained by dividing  the number of favourable cases with total number of cases.

The formula of finding out the probability of an event

P(E)=[tex]\frac{Number\;of\;favourable\; cases}{Total\;number\;of\;cases}[/tex]

We have to find the probability of winning 3 lottery

The probability of winning all three tickets,[tex]P(A AA)=P(A)\cdotP(A)\cdotP(A)[/tex]

Therefore, the probability of winning all 3 lottery =[tex]\frac{1}{10}\times \frac{1}{10}\times \frac{1}{10}[/tex]

The probability of winning all three tickets,P(A AA)=[tex]\frac{1}{1000}[/tex]

The probability of winning all three tickets,P(A AA)

=0.001

Answer:0.001

Each time a solid bicycle wheel turns, the bicycle travels 197cm. What is the area of the wheel?

Answers

Answer:

38809/(4pi) cm^2

Step-by-step explanation:

So the circumference of the wheel is 197. So to find the radius, we divide by 2 pi. So now we have 197/(2pi) as the radius. Now we have to find the area, so it is 38809/(4pi)

The area of the solid wheel is  3090 cm².

What are the circumference and diameter of a circle?

The circumference of a circle is the distance around the circle which is 2πr.

The diameter of a circle is the largest chord that passes through the center of a circle it is 2r.

We know circumference is the distance around the circle which is 2πr.

Given, Each time a solid bicycle wheel turns, the bicycle travels 197cm.

Therefore,

2πr = 197.

r = 197/π×2.

r = 31.37 cm.

Therefore, The area of the solid wheel is,

πr².

= 3.14×(31.37)² cm².

= 3090 cm².

learn more about circles here :

https://brainly.com/question/29142813

#SPJ2

How many real solutions does this equation have? h² = 37
A) 1 real solution
B) No real solution
C) Infinite number of real solutions
D) 2 real solutions

Answers

Answer:

The correct answer is D.

percent of change of $49 to $149

Answers

To find the percentage change, here is what we can do:

difference/original value x 100%

The difference: 149-49 = 100

The original value:149

The percentage change:

100/149 x 100%

=67.11409...%

Therefore the answer is 67.1%(corr. to three significant figures)

Hope it helps!

The percent of change from $49 to $149 is approximately 204.08%.

To calculate the percent of change from $49 to $149, we first find the difference in the two amounts.

The difference between $149 and $49 is $149 - $49 = $100.

Then, we divide the difference by the original amount (in this case, $49) to find the change in terms of the original amount.

This gives us $100 / $49 = 2.0408.

To convert this to a percentage, we multiply by 100. 2.0408 x 100

= 204.08%.

So the percent of change from $49 to $149 is approximately 204.08%.

Even would be helpful if you just gave me the equation to solve it and I can do the rest. mart had a sale for labor day on DVD's and video tapes. Katie bought 2 tapes and 3 DVD's and spent 134$. Emily bought 1 tape and 5 DVD's and spent 179$. How much does a tape and DVD cost .

Answers

x - price of a video tape

y - price of a DVD

[tex]\left\{\begin{array}{ccc}2x+3y=134\\x+5y=179&|\text{subtract 5y from both sides}\end{array}\right\\\\\left\{\begin{array}{ccc}2x+3y=134\\x=179-5y&|\text{substitute to the first equation}\end{array}\right\\\\2(179-5y)+3y=134\qquad\text{use distributive property}\\\\(2)(179)+(2)(-5y)+3y=134\\\\358-10y+3y=134\qquad\text{subtract 358 from both sides}\\\\-7y=-224\qquad\text{divide both sides by (-7)}\\\\\boxed{y=32}\\\\\text{Put the value of y to the second equation}\\\\x=179-5(32)\\\\x=179-160\\\\\boxed{x=19}[/tex]

Answer: video tape cost $19 and DVD cost $32.

Using arithmetic operations, rewrite this polynomial in standard, simplest form. (3x2 + 9x + 6) − (8x2 + 3x − 10) + (2x + 4)(3x − 7)

Answers

Answer:

x∧2+4x-16

Step-by-step explanation:


Answer:x^2+4x-12

Step-by-step explanation: I got it right

What are the roots of this function? f(x) = x2 – 8x + 12 A) {2, 6} B) {8, 12} C) {-3, -4} D) {-4, -4}

Answers

Answer:

A.

Step-by-step explanation:

delta = [tex]b^{2} - 4ac = (-8)^{2}-4*1*12 = 64 - 48 = 16[/tex]

[tex]x_{1} = \frac{b-\sqrt{delta}}{2a} = \frac{8+4}{2} = 6[/tex]  

[tex]x_{2} = \frac{b+\sqrt{delta}}{2a} = \frac{8-4}{2} = 2[/tex]


The cost of a ticket to a concert with 3% sales tax cab be represented by the expression t + 0.03t simply the expression then determine the total cost after the sales tax of the original price is $72

Answers

t = the cost of the ticket which is $72 without tax.

The equation s(sale after tax) = t + 0.03t, is for the ticket after tax, represented as s.

Now apply the equation to find the cost for the ticket after tax :

[tex]s= 72 + (0.03)(72) = 74.16 \: dollars[/tex]

So the final answer is $74.16

I hope this helps.

Note that
a2 + b2 = c2.


To work under a car, a mechanic drives it up steel ramps like the ones shown below. Find the length of each side of the ramp.
a = ft
b = ft
c = ft

Answers


[tex](x + 1)^{2} + {x}^{2} = (x + 2)^{2} \\ x ^{2} + 2x + {1}^{2} + {x}^{2} = {x}^{2} + 4x + {2}^{2} \\ 2 {x}^{2} + 2x + 1 = {x}^{2} + 4x + 4 \\ {x}^{2} - 2x - 3 = 0[/tex]
Solve quadratic equation:
x= 3 or x=-1 (rejected.because length cannot be negative)

The following function is quadratic.

f(x)=(x+4)(x-6)

What is the value of the positive x-intercept of the graph of the related equation y = (x+4)(x-6)?

Answers

Answer: 6

You replace f(x) or y with 0, and then solve for x

y = (x+4)(x-6)

(x+4)(x-6) = y

(x+4)(x-6) = 0

x+4 = 0 or x-6 = 0 .... zero product property

x = -4 or x = 6

The x intercepts are -4 and 6. In this case, only 6 is the positive x intercept.

side note: The term "root" is another way to say "x-intercept"

What is the sum of the tens digit and the thousandths digit in the number 102.36148?

Answers

Answer:


Step-by-step explanation:


And Answer: The 2 after the 0 is the tens. The 1 is the thousands(before the 0)


Step-by-step explanation:


I need help with this question please help

Answers

Top left : 1/10
Middle right : 1/20
Bottom middle : 1/5

You can check by multiplying those rows, columns and diagonals if you're still not sure about the answer

Paws at play made a total of $1234 grooming 22 dogs. Paws at Play charges $43 to groom each small dog and $75 for each large dog.

a. Write a system of equations that can be used to determine the number of small and large dogs that were groomed.

b. How many large dogs did Paws at Play groom?

Answers

Answer:

Answer (a):

s + l = 22 ... (i)

43s + 75l = 1234 ... (ii)

Answer (b)

9 large dogs.

Step-by-step explanation:

Paws at Play made a total of $1234 grooming 22 dogs.

Paws at Play charges $43 to groom each small dog and;

$75 for each large dog.

Let the number of small dogs be 's'

And the number of large dogs be 'l'

A system of equations will be:

s + l = 22 ... (i)

43s + 75l = 1234 ... (ii)

Solving this set of simultaneous equations by elimination, we simply multiply (i) by 43 to get;

43s + 43l = 946 ... (i)

43s + 75l = 1234 ... (ii)

Subtracting (i) from (ii) we get;

32l = 288 , l = [tex]\frac{288}{32}[/tex] = 9

So there are 9 large dogs.

Can y’all help me simplify to the lowest terms I’m a 5th grader so show me the steps plz

Answers

add all numbers on top and the highst number is the domain

10.210 ÷ 10 (Long Division Work)

Answers

1.0210 is the answer

hoped this helped

Here is how you solve this problem with long-division. Hopefully it helps!

jacie can swim 3/4 of a mile in 3/8 of an hour.how far can she swim in one hour?

Answers

Answer:

2 miles

Step-by-step explanation:

We can use ratios to solve this problem


3/4 miles         x miles

--------------- = ---------------

3/8 hours          1 hours

Using cross products

3/4 * 1 = 3/8 * x

Multiply by 8/3 to isolate x

3/4 * 8/3 = 3/8*8/3 *x

8/4 = x

2 =x

3.3 divide (0.8 - 3) - 0.5

Answers

Answer:

-2

Step-by-step explanation:

Hope this helps!

Solve x2 − 7x = −13.

A) x equals quantity of negative 7 plus or minus I square root of 6 all over 2
B) x equals quantity of negative 7 plus or minus I square root of 3 all over 2
C) x equals quantity of 7 plus or minus I square root of 6 all over 2
D) x equals quantity of 7 plus or minus I square root of 3 all over 2

Answers

Answer: the actual correct answer is D

Step-by-step explanation: i know the test answers because i am in flvs too

Evaluate the expression when n=-3.

Answers

Answer:

[tex]-10[/tex]


Step-by-step explanation:

The given expression is

[tex]n^2+5n-4[/tex]


We want to find the value of this expression when [tex]n=-3[/tex].


We just have to put [tex]-3[/tex] wherever we see [tex]n[/tex] in [tex]n^2+5n-4[/tex].


When [tex]n=-3[/tex] is substituted, we get,


[tex]=(-3)^2+5(-3)-4[/tex]


This will give us,


[tex]=9-15-4[/tex]

We simplify to get,

[tex]=-10[/tex]




1/2 + 1 1/4 less than 2

Answers

Answer:

No, it only equals 1 3/4.

Step-by-step explanation:

You first need to break up 1/2. You should know it equals 2/4, so adding 1 1/4 and 2/4, it will equal 1 3/4

The answer is 2-13/4.

A 52% video game is advertised for 20% off. If sales tax is 6%,how much will the video game cost

Answers

Answer:

Equation: 52+(52•.20) that is the first part for your answer you should get 10.4 or $10.40. Then you would take 52-10.4=41.60 then keeping that number in mind you do 41.60• .06 and get, rounded, 2.50. Then you would add 41.60+2.50 and get $44.10 as your answer . I hope I could help

Step-by-step explanation:

What is answer for # 38 and #39???

Answers

Answer:

f(x) + g(x) = 6x^2 + 28x + 36

Step-by-step explanation:

Thirty eight

You begin to solve this by writing it like this [just as you have it].

f(x) = x^2 + 5                    Now put g(x) where you see x

f(g(x)) = [g(x)]^2 + 5          Now substitute the right side of g(x) wherever you see g(x)

f(x - 4) = [x - 4]^2 + 5        Expand the brackets

f(x- 4) = x^2 - 8x + 16 + 5

f(x - 4) = x^2 - 8x + 21

=======================

Thirty Nine

f(x) = (x + 4)^2

g(x) = 5(x + 2)^2

Expand f(x)

f(x) = x^2 + 8x + 16

Expand g(x)

g(x) = 5(x^2 + 4x + 4)                    Remove the bracketsg(x) = 5*x^2 + 5*4x + 5*4              Perform the multiplicationg(x) = 5x^2 + 20x + 20                  

f(x) + g(x) = x^2 + 8x + 16 + 5x^2 + 20x + 20

f(x) + g(x) = 6x^2 + 28x + 36

Maria is playing a video game. She earns 15 points when she completes level one. Each time she completes a level, she earns twice as many points as the previous level. How many points will Maria earn when she completes level eight?

Answers

Answer:

She will earn 1,920 points.  PLEASE GIVE BRAINLIEST!!!

Step-by-step explanation:

Level 1 : 15 points   x 2 = level 2

Level 2 : 30 points   x 2 = level 3

Level 3: 60 points    x2 = level 4

Level 4:  120 points   x2 = level 5

Level 5:  240 points   x2 = level 6

Level 6:  480 points  x2 = level 7

Level 7:  960 points  x2 = level 8

Level 8:  1,920 points

2x−(3x−4)=3x−5. pls solve

Answers

Answer:

x=9/4

Step-by-step explanation:

Performing the indicated multiplication, we get

2x - 3x + 4 = 3x - 5

Combining the x terms, we get -4x = -9, so that x = 9/4.

50-u>48


u>?

please help too lazy

Answers

[tex]50-u>48\qquad\text{subtract 50 from both sides}\\\\-u>-2\qquad\text{change the signs}\\\\u<2[/tex]

According to the Doppler effect, if a car with a blowing horn is moving toward you, the pitch you hear will

Answers

Answer:

If a car with a blowing horn is moving toward you, the pitch sounds higher than the actual emitted frequency.

Step-by-step explanation:

In figure,

        V= speed of wave

         U= speed of car

When car moving towards you, then

Car travels a distance in time T = VT

 Wave travels a distance in time T = UT

From figure,

                    change in wavelength (λ') = VT - UT= T(V-U)

Now,

        V = λ' f'         (f' →frequency observed by you)

         f' = V ÷ λ' = [tex]\frac{V}{T(V-U)}[/tex]

We know that

                      [tex]\frac{1}{T}[/tex] = f

Then,

        f' =  [tex]\frac{Vf}{V-U}[/tex]

        f' = [tex]\frac{f}{1-\frac{U}{V} }[/tex]

Hence, we can say that

           frequency increases as source moves toward you.

Answer:

B. Increase

Step-by-step explanation:

The closer together the crests, the higher the frequency (or pitch)

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