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Artyom0805 [142]
3 years ago
8

What is the radius in feet of a circle that contains 78.5 square feet?

Mathematics
1 answer:
mylen [45]3 years ago
4 0
A=pr^2

r=(a/p)^(1/2)

r=(78.5)^(1/2) ft

r=5 ft (to the nearest one-hundredth)
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podryga [215]
N=1.2 I don't know what you are asking in the second part of the question
4 0
3 years ago
Apply the square root principle to solve (x-5)^2-40=0
Nitella [24]

Answer: {5 ± 2√10, 5 - 2√10}

Step-by-step explanation: First isolate the binomial squared by adding 40 to both sides to get (x - 5)² = 40.

Next, square root both sides to get x - 5 = ± √40.

Notice that root of 40 can be broken down to 2√10.

So we have x - 5 = ± 2√10.

To get <em>x</em> by itself, add 5 to both sides to get x = 5 ± 2√10.

So our answer is just {5 ± 2√10, 5 - 2√10}.

As a matter of form, the number will always come before the

radical term in your answer to these types of problems.

In other words, we use 5 ± 2√10 instead of ± 2√10 + 5.

4 0
3 years ago
What is the remainder when x 3 - 7x - 6 is divided by the linear factor x - 4? 4
mart [117]
Hello,

P(x)=x^3-7x-6

P(4)=4^3-7*4-6=30
Remainder=30

6 0
3 years ago
The width of a rectangle is 4 less than half the lenght. If L represents the length, which equation could be used to find the wi
adell [148]

Answer:

Step-by-step explanation:

Find the midpoint of a segment. It is geometry please help.

5 0
3 years ago
PQ has a midpoint of M. the coordinates of M are (-4, 7) and the coordinates of P are (2, 13). What are the coordinates of Q?
Natali5045456 [20]

Using the midpoint formula, the coordinates of Q are: <em>A. (-10, 1)</em>

<h3>What is the Midpoint Formula?</h3>
  • Midpoint formula is given as, M(x, y) = (\frac{x_2 + x_1}{2} , \frac{y_2 + y_1}{2})

Thus, given that:

  • M is the midpoint of PQ.
  • M (-4, 7)
  • P (2, 13).

Therefore:

M(-4, 7) = (\frac{2 + x_1}{2} , \frac{13 + y_1}{2})

Solve for x-coordinate of P:

-4 = 1/2(2 + x1)

2(-4) = 2 + x1

-8 = 2 + x1

-8 - 2 = x1

x1 = -10

Solve for y-coordinate of P:

7 = 1/2(13 + y1)

14 = 13 + y1

y1 = 1

Therefore, using the midpoint formula, the coordinates of Q are: <em>A. (-10, 1)</em>

<em />

Learn more about the midpoint formula on:

brainly.com/question/88621

3 0
2 years ago
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