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3 years ago

What is the area of the circle given the radius 9. use 3.14

Mathematics

1 answer:

xxMikexx [17]3 years ago

4 0

Answer:

254.5

Step-by-step explanation:

area of circle = pi (3.142) x 9squared

answer 254.5 or 81 pi

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A college admits a freshman class of 330 students at the beginning of each academic year and graduates 145 students twice a year

Andre45 [30]

Answer:

200 students

Step-by-step explanation:

Change in one year:

330 - 2(145) = 330 - 290 = 40

Change after 5 years:

40*5 = 200 students

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3 years ago

Hello there hello hello

OleMash [197]

Answer:

(-4,-7)

Step-by-step explanation:

The process of a reflection across the y axis is simply just switching the x value in (x,y) to a negative. So, (4,-7) and then make 4, a -4. So the resulting image is (-4,-7)

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3 years ago

Read 2 more answers

Find the inverse function of f(x)=4x-8

kipiarov [429]

Answer:

f^-1(x)=1/4x+2

Step-by-step explanation:

y=4x-8

change x and y

x=4y=8

switch sides

4y-8=x

add 8

4y=x+8

divide both sides by 4

y=1/4x+2

substitute f^-1(x) for y

f^-1(x)=1/4x+2

8 0

3 years ago

Melissa made 15,000 in taxable income last year. Suppose the income tax rate is 15% for the first $9000 plus 19% for the amount

alisha [4.7K]

She must pay atless 20,00 a year

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4 years ago

A person participates in a state lottery by selecting six numbers from 1 through 51. If the six numbers match the six drawn by t

Licemer1 [7]

There are

$\dbinom{51}6=\dfrac{51!}{6!(51-6)!}=18,009,460$

total ways to draw any 6 numbers from the range 1 to 51, regardless of order.

Given 6 selected numbers that match those drawn by the lottery, there are

$6!=720$

ways of rearranging them. So the probability of winning 1st prize is

$\dfrac{720}{18,009,460}=\dfrac{36}{900,473}\approx0.0000399790$

Next, given 6 selected numbers of which 5 match those drawn by the lottery, there are

$5!=120$

ways of rearranging those 5 matching numbers. There are 46 remaining numbers that didn't get drawn, so the probability of winning 2nd prize is

$\dfrac{46\cdot120}{18,009,460}=\dfrac{12}{39,151}\approx0.0003065$

7 0

3 years ago