MATHEMATICS HIGH SCHOOL

Answer the following questions CORRECTLY I will know if this is wrong. I WILL REPORT ANY INCORRECT ANSWERS!Criteria for getting brainliest and not getting reported:
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1. Solve the equation.
-5 = a/18 (This is a fraction)

Answers

Answer 1
Answer:

-5 = a/18

multiply by 18 on each side

-5 * 18 = a/18 * 18

-90 = a


Answer: a = -90
Answer 2
Answer:

Answer is JKismyhusbandbae:

\mathrm{Switch\:sides}\n(a)/(18)=-5\n\mathrm{Multiply\:both\:sides\:by\:}18\n(18a)/(18)=18\left(-5\right)\nSimplify\na=-90

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6^x=36^(x+1)

Solve for x

Answers

Answer:

x = -2

Step-by-step explanation:

6^x = 36^(x+1)

Apply exponent rules: x = 2(x+1)

Solve: x = 2(x+1): x = -2

Hope this helps! :)

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A line passes through the point (-3,-4) and its y-intercept is (0,9). what is the equation of the line that is parallel to the first line and passes through the point (3,-7)?a. y=3/5x+2
b. y=5/3x+2
c. y=-5/3x-2
d. y=5/3x-2

Answers

You have a mistake in your question... y-intercept must be ( 0, -9 ), because with coordinates ( 0, 9 ) there is no answer.
The line equation of the 1st line: 
-4 = -3m - 9
3 m = - 9 + 4
3 m = -5
m = - 5/3
If the 2nd line is parallel to this one m-value is also -5/3.
-7 = - 5/3 · 3 + b
- 7 = - 5 + b
b = - 2
Answer: C ) y = - 5/3 x - 2

If a plant manufacturing carpet backing has a cylindrical tank that is 3 meters high and is 6 meters in diameter, what is the volume of the tank? Assume 3.14 for pi.A)28.3 m^3
B)37.7 m^3
C)56.5 m^3
D)84.8 m^3

Answers

V = 3.14(r^2)h
V = 3.14(3)^2(3)
V = 3.14(9)(3)
V = 3.14(27)
V = 84.78 m^3
V = 84.8 m^3

The answer is D.

Last year, sales at a book store increased from $5,000 to $10,000. This year, sales decreased to $5,000 from $10,000. What percentage did sales increase last year? What percentage did sales decrease this year?

Answers

Solution:

we are given that

Last year, sales at a book store increased from $5,000 to $10,000.

As we know that percentage increase is given by the formula

Percentage increase=(change)/(Initial)*100

Substitute the values we get

Percentage increase=(10000-5000)/(5000)*100

Percentage increase =(5000)/(5000)*100=100%.

This year, sales decreased to $5,000 from $10,000.

Percentage Decrease =(change)/(Initial)*100

Substitute the values we get

Percentage Decrease =(10000-5000)/(10000)*100

Percentage Decrease=(5000)/(10000)*100=50%.

Answer:

100%, 50%

Step-by-step explanation:

An engine makes 400 revolutions per minute. It will make [blank] [blank] in 12 minutes.

Answers

To solve this problem, we can set up a proportion.

400 revolutions/1 minute = x revolutions/12 minutes

To solve this proportion, we can use cross products, which is multiplying the numerator of one fraction by the denominator of the other and setting these two products equal to one another.

400*12 = 1 * x 

Now, let's simplify.

4800 =x 

Therefore, if an engine makes 400 revolutions per minute, it will make 4800 revolutions in 12 minutes.

PLEASE HELP
DO 8 & 9 PLEASE

Answers

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