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3 years ago

15

What is the 20th term in the sequence. f(n) = 9n - 12

1 answer:

Lerok [7]3 years ago

6 0

Answer:

f(20) = 168

Step-by-step explanation:

To find the 20th term, substitute n = 20 into f(n) , that is

f(20) = 9(20) - 12 = 180 - 12 = 168

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A circle has an area of 153.86 units2 and a circumference of 43.96 units. If the radius is 7 units, what can be said about the r

dusya [7]

Step-by-step explanation:

$\text{Circumference:}\\\\C=2\pi r\\\\\text{Area:}\\\\A=\pi r^2\\\\\dfrac{A}{C}=\dfrac{\pi r^2}{2\pi r}\qquad\text{cancel}\ \pi\ \text{and}\ r\\\\\dfrac{A}{C}=\dfrac{r}{2}\\\\\bold{The\ number\ of\ areas\ of\ a\ circle\ is}\ \dfrac{r}{2}\ \bold{larger\ than\ its\ circumference}.$

$\text{For a given area and circumference}:\\\\A=153.86,\ C=43.96,\ r=7\\\\\dfrac{A}{C}=\dfrac{153.86}{43.96}=3.5=\dfrac{7}{2}=\dfrac{r}{2}\\\\\dfrac{A}{C}=\dfrac{r}{2}$

4 0

3 years ago

A road sign has the shape of an equilateral triangle with a side length of 48 inches. What is the height of the sign? The road s

Ivenika [448]

The height of the equilateral triangle is 41. 6 inches. Option C

<h3>How to determine the height</h3>

The formula for finding the height of an equilateral triangle is given as;

h = (a√3)/2

we have a = 48 inches

Let's substitute the value

Height, h = $\frac{48\sqrt{3} }{2}$

Height = $\frac{48 * 1. 732}{2}$

Height = $\frac{83. 14}{2}$

Height = $41. 6$ Inches

Thus, the height of the equilateral triangle is 41. 6 inches. Option C

Learn more about equilateral triangles here:

brainly.com/question/1399707

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5 0

2 years ago

Plz help me answer this

kow [346]

Answer:

140

Step-by-step explanation:

Solve 40% of 350.

8 0

3 years ago

Read 2 more answers

Add or subtrack<br>1. -16 +21<br>2.-13--12<br>3.-23-(-8)

konstantin123 [22]

Answer:

1. subtract

2. add

3. add

4 0

3 years ago

Read 2 more answers

What is 36 percent of 210?

ohaa [14]

Hey there!

Let's start by finding what 1% of 210 is.

This can be done by dividing 210 by 100, since 1% is the same as 1/100 of something.

210 ÷ 100 = 2.1

To find 36%, we can multiply 2.1 by 36.

2.1 x 36 = 75.6

So, 36% of 201 is 75.6.

Hope this helps!

4 0

3 years ago