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4 years ago

Help me plz I don't understand this

Mathematics

2 answers:

neonofarm [45]4 years ago

7 0

Answer:

D. $\frac{10}{15}$ and $\frac{14}{21}$

Step-by-step explanation:

Proportional ratios are ratios that represent the same relationship. One way to check this is to reduce the ratios, because if they are proportional, they will equal the same thing. Both $\frac{10}{15}$ and $\frac{14}{21}$ simplify to $\frac{2}{3}$ .

Hope this helps!!

aliina [53]4 years ago

5 0

Answer:

its D

Step-by-step explanation:

if you divide 10/15 its .666 and if you divide 14/21 its .666 so there equal BRAINLEIST????

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allochka39001 [22]

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2 years ago

9. On July 4, 2017, the United States of America had a population of 325.7 million

Nana76 [90]

The population density in the United States is D = 92.1 people/mi^2

<h3></h3><h3>How to get the population density?</h3>

To get the population density, we need to take the quotient between the total number of people and the area.

In this case, we know that the total population is 325.7 million, and the area of the United States is 3,535,932 mi^2

Then the population density:

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And we know that 1 million = 1,000,000 = 1*10⁶

Then:

9.21*10⁻⁵ million/mi^2 = 9.21*10¹ people/mi^2 = 92.1 people/mi^2

This means that in each square mile in the United States, there are around 92.1 people.

If you want to learn more about density:

brainly.com/question/1354972

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2 years ago

You put $500 in your bank account. With an interest rate of 5%, how long will it take the account to reach $600?

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the length of a rectangle is 5 inches longer than twice the width and the area is 12 inches squared. Let l represent the length

svet-max [94.6K]

Answer:

Length = 8 inch , Width = $\frac{3}{2}$ , This equation models the situation

Step-by-step explanation:

Given as ;

The Area of Rectangle is 12 inches²

The Length of Rectangle is 5 inches longer than twice the width

Let The Length = L inches

The Width = W inches

According to question ,

L = 5 + (2 × w )

∵ The Area of Rectangle = Length × width

Or, 12 inches² = [ 5 + (2 × w ) ] × w

Or, 12 inches² = 5 w +2 w²

Or, 2 w² + 5 w - 12 = 0

Or, 2 w² + 8 w -3 w - 12 = 0

Or, 2 w (w +4) - 3 (w + 4) = 0

I.e (w + 4) ( 2 w - 3) = 0

So , w = -4 , and w = $\frac{3}{2}$

∴ Length = 5 + (2 × w ) =

Length = 5 + (2 × $\frac{3}{2}$ )

so , L = 5 + 3 = 8

Hence Length = 8 inch , Width = $\frac{3}{2}$ This equation models the situation Answer

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3 years ago

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Answer:

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Step-by-step explanation:

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