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3 years ago

If the side lengths are

Mathematics

1 answer:

aliina [53]3 years ago

5 0

Answer:

It would be 2 times the old perimeter.

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What is the value of x if 3x-6=21

Mrac [35]

Answer:

the x would equal to 9

Step-by-step explanation:

21+6=27

27÷3=9

6 0

3 years ago

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I know the answer I got is wrong help.

irinina [24]

Answer:

∠2 = 18°

Step-by-step explanation:

∠WXZ = ∠1 + ∠2 ← substitute ∠1 = 3∠2

∠WXZ = 3∠2 + ∠2, that is

72 = 4∠2 ( divide both sides by 4 )

18 = ∠2, that is

∠2 = 18°

8 0

4 years ago

A cyclist rides her bike at a rate of 21 kilometers per hour. What is this rate in kilometers per minute? How many kilometers

Dafna11 [192]

Answer:

Step-by-step explanation:

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3 years ago

Given the function defined in the table below, find the average rate of change, in simplest form, of the function over the inter

Igoryamba

Answer:

$Average\ Rate = 48$

Step-by-step explanation:

Given

See attachment for table

Required

Determine the average rate of change over $5\le x \le 7$

Average rate of change is calculated using:

$Average\ Rate = \frac{f(b) - f(a)}{b - a}$

Where

$a \le x\le b$

In this case:

$a = 5;\ \ \ b = 7$

$Average\ Rate = \frac{f(b) - f(a)}{b - a}$

$Average\ Rate = \frac{f(7) - f(5)}{7 - 5}$

$Average\ Rate = \frac{f(7) - f(5)}{2}$

From the table:

$f(7) = 108$

$f(5) = 12$

The expression becomes

$Average\ Rate = \frac{108 - 12}{2}$

$Average\ Rate = \frac{96}{2}$

$Average\ Rate = 48$

5 0

3 years ago

Whats the Diameter? I really need help understanding this

Arada [10]

Answer:

1.8 in.

Step-by-step explanation:

Hi there!

<u>1) Determine the radius of the base</u>

$V=\frac{1}{3} \pi r^2h$ where r is the radius of the base and h is the height of the cone

Plug in the known values (h=4.2, V=3.6)

$3.6=\frac{1}{3} \pi r^2(4.2)$

Isolate r; divide both sides by 4.2

$\frac{3.6}{4.2} =\frac{1}{3} \pi r^2\\\frac{6}{7} =\frac{1}{3} \pi r^2$

Multiply both sides by 3

$\frac{6}{7}*3 =\pi r^2\\\frac{18}{7}=\pi r^2$

Divide both sides by π

$\frac{18}{7\pi }=r^2$

Take the square root of both sides

$\sqrt{\frac{18}{7\pi }} =r$

<u>2) Determine the diameter</u>

Now that we have the radius, to find the diameter, multiply r by 2:

$d=\sqrt{\frac{18}{7\pi }}*2\\d=1.8$

Therefore, the diameter is 1.8 in. when rounded to the nearest tenth.

I hope this helps!

3 0

3 years ago

Read 2 more answers