MATHEMATICS MIDDLE SCHOOL

In 2007, the US population was 302 million people. In 2012, and 314 million. What was the rate of the population change per year?

Answers

Answer 1

Answer:

The correct answer is:

2.4 million.

Explanation:

To find the rate of change, first we find the amount that the population grew in the time period:

314-302 = 12

Now we calculate the number of years:

2012-2007 = 5

Divide the amount of change by the number of years:

12/5 = 2.4

The population grew by 2.4 million people per year.

Answer 2

Answer: 314 - 302 =12 / 5 = 2.4,

the population grows 2.4 percent of people a year.

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Who could help me please!!!!This is the last time:))))

Answers

A). and B).
No. Neither one is preferred
Tiger and Eagle both got 40 total votes.

C). No.
Fifth and sixth grade students voted 27 to 13 in favor of Tiger.

D). Yes.
Seventh and Eighth grade students voted 27 to 13 for the Eagle.

Given a=5, d=3,an =50 .find the n and 5n

Answers

Answer:

Step-by-step explanation:

an = 50

a +(n-1)d = 50

5 + (n-1)*3 = 50

(n-1)*3 = 50 - 5 = 45

n-1 = 45/3

n-1 = 15

n=15+1 = 16

n = 16

Answer:n=10, 5n=50

Step-by-step explanation:

an=50

n=50/a

n=50/5=10

5n=5×10=50

Mark wrote the highest score he made on his new video game as the product of 70x6,000. Use the associative and commutative properties to show how mark can calculate this product mentally

Answers

Answer:

70 × 6000 = 420000

Step-by-step explanation:

In this question, we need to write the product of two numbers 70 × 6000 using associative and commutative properties.

Two numbers are commutative if,

a × b = b × a

Two numbers are associative if,

(a × b) × c = a × (b × c)

Here, $70* 6000=(7* 10)* (6* 1000)$

$70* 6000=7* 10* 6* 1000$

Using commutative property as,

$70* 6000=7* 6* 10* 1000$

Now using associative property as,

$70* 6000=42* (10* 1000)$

$70* 6000=42* (10000)$

$70* 6000=420000$

So, 70 × 6000 = 420000. Hence, this is the required solution.

you need a caculater that is what you need tho

Are 16:14 and 64:60 equivalent ratios?

Answers

Answer:

Both the ratios are not equivalent.

Step-by-step explanation:

Consider the provided ratios:

16:14

The above ratio can be written as:

$(16)/(40)=(2)/(5)$

Now consider the another ratio:

64:60

The above ratio can be written as:

$(64)/(60)=(16)/(15)$

Now compare both the ratio:

$(2)/(5)\neq (16)/(15)$

Hence, both the ratios are not equivalent.

Ratios are equivalent when you divide the first term by the second and it's the same for both ratios.

In this case, 16/14 is not equal to 64/60

a rectangle is 8 inches long and 4 inches wide a similar rectangle is 12 inches what is the width of the second triangle to the nearest inch?

Answers

The first rectangle: width/length=4/8, simplify it to get 1/2 The second rectangle: Width/length=?/12 Use proportion: 1/2= 6/12 So the wide of the second rectangle is 6

2.7 Because the first rectangles area is 32 and the second rectangle has a base of 12. So you need to multiply something with 12 to get a close answer to 32.And that close number is 2.7

In a fifth grade class 4/5 of the girls have brown hair 3/4 of them have Long hair what fraction have Long brown hair