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3 years ago

URGENT!!!! Set up proportions for each variable and solve!!! I have a test tomorrow and have no clue how to do proportions!

Mathematics

1 answer:

vlada-n [284]3 years ago

8 0

Answer:

This is how you do proportions (images below). If you need more help just ask.

Step-by-step explanation:

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The water level in a swimming pool decreases from 60 inches to 58.25 inches in one week.

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I think it’s gonna be A.

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3 years ago

Solve equation <br> 5x^4 = 405

Ratling [72]

There are two possible solutions

X=3
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4 years ago

What is the interest rate of each investment if The annual interest on a $17,000 investment exceeds the interest earned on an $8

Butoxors [25]

<u>Solution-</u>

Let's assume, the rate of interest of $8000 is x%,

then the rate of interest of $17000 is (x+0.3x) =1.3x%

Interest earned by $8000,

$i_1=\frac{8000\times x\times 1}{100} =80x$

Interest earned by $17,000,

$i_2=\frac{17000\times 1.3x\times 1}{100} =221x$

According to the question,

$\Rightarrow i_1=i_2+276$

$\Rightarrow 221x=80x+276$

$\Rightarrow 221x-80x=276$

$\Rightarrow 141x=276$

$\Rightarrow x=1.96$

∴ Rate of interest of $8000 is 1.96% and rate of interest of $17000 is (1.3×1.96) =2.55%

3 0

3 years ago

The height of an arrow after being shot directly upwards can be modeled by h = −16t2 + 48t, where h is the height in feet and t

Wittaler [7]

Answer:I don’t really understand

Step-by-step explanation:

Can u please explain?

7 0

4 years ago

This is a question on proportions in geometry. Image has been shared.

Digiron [165]

A+b 5
------- = ---
2a-b 4

b 5
-------- = ---- => 9b = 5a+45 => b = (5a+45)/9
a+9 9

a+b 5
------- = --- => 4a+4b = 10a-5b
2a-b 4

9b = 6a

9(5a+45) =6a divide both sides by 3

3(5a+45) = 2a

15a +135 = 2a

13a = -135

a = -135/13 = -10,38

a= -10,38

9b=6a

3b=2a

3b = 2(-10,38)

3b = -20,76

b = -20,76/3

b = -6,92

hope this helped

7 0

3 years ago

Read 2 more answers