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3 years ago

Calculate the area of the circle with radius of 4.5 leave Answer in terms of pi

Mathematics

1 answer:

aleksklad [387]3 years ago

8 0

A=pi r^2
= 20.25 pi is the answer

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The results of a recent survey of the students at Rockdale Middle School show that 17 out of every 22 students enjoy the cafeter

aalyn [17]

Answer:

80.5%

Step-by-step explanation:

Because 17/22 converted to a percent is 72% and 56 is not right so 80.5% must be the right choice.

5 0

3 years ago

LET me know how you got the answer

andre [41]

6/2*3 / 3(3)

First simplify the numerator: 6/2*3 = 3*3 = 9

Next simplify the denominator: 3(3) = 3*3 = 9

So you have 9/9, which equals 1.

The 3rd answer is correct.

6 0

3 years ago

Read 2 more answers

Cecilia owns just as many cats as she does birds. If her pets have a total of 18 legs, how many cats does she own?

Elena-2011 [213]

Haha what? Is this like a joke..how does a cat have 18 legs.what that’s confusing

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3 years ago

Read 2 more answers

I’m going to be posting a lot of math questions so look at my account if you wanna answer the rest

IRINA_888 [86]

Answer:

3.Area=πr²

d=14ft

r=7 ft

22/7*7*7

area=154ft²

5.area =1/2 bh

h=13cm

area=32.5cm²

32.5=1/2*13*b

32.5=13/2b

=5.0 or 5

base=5cm

Step-by-step explanation:

4 0

2 years ago

The position of a passenger train that is traveling at an initial speed of 14 feet per second and continues to accelerate can be

salantis [7]

Solving the system of equations, it is found that a viable time that the trains are side by side is given by:

B. 15 sec

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the equations are:

$y = 14t^2$

$y = 130t + 1200$

They will be side by side when:

$14t^2 = 130t + 1200$

$14t^2 - 130t - 1200 = 0$

It's solution is a quadratic function with coefficients a = 14, b = -130, c = -1200, hence:

$\Delta = (-130)^2 - 4(14)(-1200) = 84100$

$x_1 = \frac{130 + \sqrt{84100}}{28} = 15$

$x_2 = \frac{130 - \sqrt{84100}}{28} = -5.71$

Time is a non-negative measure, hence option B is correct.

More can be learned about a system of equations at brainly.com/question/24342899

5 0

2 years ago