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3 years ago

What would be the area of a regular polygon with a perimeter of 30 feet and an apothem of 4 feet?

1 answer:

8 0

60ft
Because the formula for a regular polygon is A=1/2(apothem)(perimeter). So first you would do is 1/2 times 4 which equals 4/2. 4/2 times 30 is 60, so 60 is the area.

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10. Mrs. Simon is trying to find the amount of floor

luda_lava [24]

:

The area.

She is trying to find how to cover it, which would be the area of the floor.

5 0

2 years ago

Use Newton's method with initial approximation x1 = −2 to find x2, the second approximation to the root of the equation x3 + x +

nevsk [136]

Answer:

$x_2 \approx -1.769$

Step-by-step explanation:

Let $f(x)=x^3+x+7$

So $f'(x)=3x^2+1$

$x_{n+1}=x_n-\frac{f(x_n)}{f'(x_n)}$

Let $x_1=-2$

We are going to find $x_2$

So we are evaluating $-2-\frac{f(-2)}{f'(-2)}$

First step find f(-2)

Second step find f'(-2)

Third step plug in those values and apply PEMDAS!

$f(-2)=(-2)^3+(-2)+7=-8-2+7=-10+7=-3$

$f'(-2)=3(-2)^2+1=3(4)+1=12+1=13$

$x_2=-2-\frac{-3}{13} \\\\ x_2=\frac{-26+3}{13} \\\\ x_2=\frac{-23}{13} \\\\ x_2 \approx -1.769$

5 0

2 years ago

If the simple interest rate is 5%p.a. , how long does it take for the amount to become twice the principal

solong [7]

A = P + I
2a = a + PTR/100
2a = a + 5aT/100
2a = a(1+T/20)
2=1+T/20
T=20 yrs

3 0

3 years ago

What is 2*2^3 in expanded form?

katrin2010 [14]

Answer:

Step-by-step explanation:

To solve this question,we will have to understand some symbols in mathematics...

For example,* means ×

/ Means÷

We have so many of them

So back to the question

2*2^3 means 2 multiply by 2 raise to the power of 3

So 2^3 is 8

Therefore,2*8 means 2×8

It equals to 16

Therefore the final answer is 16

I hope you understand it better now

5 0

3 years ago

Jacob shares 4 sandwiches equally on 3 plates. How many sandwiches will be on each plate?

My name is Ann [436]

Answer:

1 1/3

Step-by-step explanation:

3 0

3 years ago