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3 years ago

What percent of 90 is 36

Mathematics

1 answer:

Allushta [10]3 years ago

4 0

$\dfrac{36}{90}=\dfrac{4}{10}=\dfrac{40}{100}=\boxed{40\,\% }$

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write an equation in slope intercept form for the line that passes through ( 4, -4) and is parallel to 3 + 4x = 2y - 9

Kruka [31]

Answer:

y = 2x - 12

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Rearrange 3 + 4x = 2y - 9 into this form

add 9 to both sides

12 + 4x = 2y ( divide all terms by 2 )

6 + 2x = y ← in slope- intercept form

with slope m = 2

• Parallel lines have equal slopes, hence

y = 2x + c ← is the partial equation of the parallel line

To find c substitute (4, - 4) into the partial equation

- 4 =8 + c ⇒ c = - 4 - 8 = - 12

y = 2x - 12 ← equation of parallel line

4 0

4 years ago

Need help pls solve 7x-4y=-7 5x+y=22

aev [14]

<span>7x-4y=-7
5x+y=22

multiply 4 on the 2nd equation
</span>20x+ 4y=88

now you have
7x -4y = -7
20x + 4y = 88
--------------------add
27x = 81
x = 3

7x-4y=-7
7(3)-4y=-7
-4y = -28
y = 7

answer (3, 7) is the solution

3 0

3 years ago

Read 2 more answers

Item 5 There are 20 balls in a bag. Ten of the balls are red, 4 are green, and the rest are yellow. Which ratio represents the n

OlgaM077 [116]

Answer:

3:5 <em>the colon is needed to represent the ratio</em>

Step-by-step explanation:

r = 10

g = 4

y = 30 - 14 = 6

y = 6

so ratio of total balls is 10:4:6

and ratio of y:r is

6:10

simply by dividing by 2

3:5

4 0

3 years ago

The total sales of a company (in millions of dollars) t months from now are given by S(t) = 0.03t3 + 0.5t2 + 9t + 4. Find S'(t).

mars1129 [50]

Answer:

$S(2) = 24.24$ . This means that in the second month, the company will sell 24.24 millions of dollars in total.

$S'(2) = 11.36$ . This means that in the second month the total sales will increase in 11.36 millions of dollars from the previous month.

d. The total sales 11 months from now will be $203.43 million dollars.

Step-by-step explanation:

The total sales of the company, in millions of dollars is given by the following formula:

$S(t) = 0.03t^{3} + 0.5t^{2} + 9t + 4$

This function has the following derivative, which represents the variation in relation to the previous month.

$S'(t) = 0.09t^{2} + t + 9$

Find S(2) and S'(2)

$S(t) = 0.03t^{3} + 0.5t^{2} + 9t + 4$

$S(2) = 0.03*(2)^{3} + 0.5*(2)^{2} + 9*2 + 4 = 24.24$

$S(2) = 24.24$ . This means that in the second month, the company will sell 24.24 millions of dollars in total.

$S'(t) = 0.09t^{2} + t + 9$

$S'(2) = 0.09*2^{2} + 2 + 9 = 11.36$

$S'(2) = 11.36$ . This means that in the second month the total sales will increase in 11.36 millions of dollars from the previous month.

Choose the correct interpretation of S(11)=203.43.

S represents total sales, and S(11) is the total sales 11 months from now.

So the correct answer is:

d. The total sales 11 months from now will be $203.43 million dollars.

7 0

3 years ago

Barry begins the year with $25 in his piggy bank. At the end of each

const2013 [10]

Answer:

I think the answer is 40. it will take about 20 months to have 100 dollars

4 0

3 years ago