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3 years ago

Someone help me please and explain how you got your answer.

Mathematics

1 answer:

zimovet [89]3 years ago

3 0

*I'm not exactly sure what it means by compare the percents of change*

From 2000 to 2005, that's 5 years.
After 5 years, the population decreased from 4.3 mil to 3.2 mil; 3.2 - 4.3 = -1.1; that's a decrease of 1.1 mil.
1.1 mil out of 4.3 mil is approximately 26%.
So from 2000 to 2005, the population decreased by 26%.

From 2005 to 2010, that's also 5 years.
After that 5 years, the population increased from 3.2 mil to 5.6 mil; 5.6 - 3.2 = 2.4; that's an increase of 2.4 mil. 2.4 mil out of 3.2 is 75%.
So from 2005 to 2010, the population increased by 75%.

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How do you factor -4x^2 + 4x - 10?

Sonbull [250]

Answer:

-2 (2 x^2 - 2 x + 5)

Step-by-step explanation:

Factor the following:

-4 x^2 + 4 x - 10

Factor -2 out of -4 x^2 + 4 x - 10:

Answer: -2 (2 x^2 - 2 x + 5)

3 0

3 years ago

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Write a statement that indacates that the triangles in each pair are congruent

Wittaler [7]

Answer:

The answer would be C

Step-by-step explanation:

Because if you look at the triangles you can where they match up and if you look at the lines you can tell if they match up and C matches that`s how I did it well that`s how I do it when I do math

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3 years ago

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3 years ago

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The circle has a diameter of 16 inches. What is the area of the circle, rounded to the nearest square inch?

Ratling [72]

Statement:

The circle has a diameter of 16 inches.

To find out:

The area of the circle.

Solution:

Diameter of the circle = 16 inches.

Radius of the circle
= Diameter ÷ 2
= 16 inches ÷ 2
= 8 inches

π = 3.14

We know, area of a circle = πr² where r is the radius.

Therefore, the area of the circle
= 3.14 × (8)² square inches
= 3.14 × 64 square inches
= 200.96 square inches
= 201 square inches [rounded to the nearest square inch]

Answer:

C) 201 square inches

Hope you could understand.

If you have any query, feel free to ask.

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3 years ago

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Rearrange w= 3(2a + b) - 4 to make a the subject

Angelina_Jolie [31]

Answer:

$\boxed{a = \frac{w}{ 6} - \frac{b}{2} + \frac{2}{3} }$

Step-by-step explanation:

$Solve \: for \: a: \\ = > w=3(2a+b)-4 \\ \\ w=3(2a+b)4 \: is \: equivalent \: to \: 3(2a+b)-4= w: \\ = > 3(2a+b) - 4=w \\ \\ Expand \: out \: terms \: of \: the \: left \: hand \: side: \\ = > (3 \times 2a) + (3 \times b) - 4 = w \\ = > 6a+3b - 4=w \\ \\ Subtract \: 3b - 4 \: from \: both \: sides: \\ = > 6a + 3b - 4 - (3b - 4)=w - (3b - 4) \\ = > 6a = w - 3b + 4 \\ \\ Divide \: both \: sides \: by \: 6: \\ = > \frac{ \cancel{6}a}{ \cancel{6}} = \frac{w - 3b + 4}{6} \\ = > a = \frac{w}{6} - \frac{3b}{6} + \frac{4}{6} \\ = > a = \frac{w}{ 6} - \frac{b}{2} + \frac{2}{3}$

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3 years ago