Passing through (5, -4) and parallel to the line whose equation is y=-2x+3; point-slope form

Find the area and the circumference of the circle. Round your answers to the nearest hundredth.

Alik [6]

Answer:

$area = 200.96 \: {units}^{2} \\ circumfrence = 50.24 \: units$

Step-by-step explanation:

The formula to find the area and circumference of a circle is:

$area = \pi {r}^{2} \\ circumfrence = 2\pi \: r$

*note that pi is 3.14* Therefore the area is:

$formula = \pi {r}^{2} \\ 3.14 \times {8}^{2} = \\ 3.14 \times 64 = 200.96$

Therefore the circumference is:

$formula = \: 2\pi \: r \\ (2)(3.14)(8) = \\ 3.14 \times 16 = 50.24$

3 0

2 years ago

If a polynomial function f(x) has roots -9 and 7-i, what must be a factor of f(x)

Likurg_2 [28]

Hello from MrBillDoesMath!

Answer:

x + 9 and (x + ( i - 7)) are factors

Discussion:

If f(x) has roots -9 and 7-i then

f(x) = g(x)(x - (-9)) (x - (7-i)) ( g(x) is a polynomial of degree less than f(x))

That is, x + 9 and (x + ( i - 7)) are factors of f(x)

BTW: if the coefficients of f(x) are real (not stated in the Question) then the conjugate of 7-i, i.e. 7 + i, is also be a root.

Thank you,

MrB

3 0

3 years ago

Read 2 more answers

Kendra needs 1 dollar to buy a ball she has 73 cents what coins does she need to add her 73 cents

Alexeev081 [22]

Answer:

Kendra needs 3 coins (1 coin of 25 cent & 2 coins of 1 cent) to add 27 cents in 73 cents to make 1 dollar

Step-by-step explanation:

Given :

Kendra has 73 cents

She need 1 dollar to by a ball

∴ She requires additional money = $1\ dollar - 73 \ cents = 27 \ cents$

Standard Coins available are 50 cents , 25 cents, 10 cents, 5 cents and 1 cent.

To make 27 cents = $25+1+1$ = 1 coin of 25 cent & 2 coins of 1 cent

5 0

3 years ago

Please help i know this is not that hard but i have this and one other thing due in a few minutes and i can't get them both in o

HACTEHA [7]

Answer:

0.2350 x 180 = 42.30

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The perimeter of a rectangle is 54 meters. One side is three meters less than four times the length of the other side. Find the

Elenna [48]

Answer:

6 and 21 meters long

Step-by-step explanation:

You make an equation from what you got (there are 2 widths and 2 lengths)

2(4w-3)+2w=54---->10w-6=54---> 10w=60 ----> w=6 ---> plug in the rest and you get 21 as the length.

or... make W+L=28 and guess and check!!! takes longer but works!

7 0

3 years ago