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yawa3891 [41]
2 years ago
5

What is the area of a circular swimming pool with the radius of 3 feet

Mathematics
1 answer:
horsena [70]2 years ago
8 0

Answer:

9\pi

Step-by-step explanation:

r=3

Area of circle: \pir^{2}

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Please answer this question...​
Dafna1 [17]

Answer:

109.56

Step-by-step explanation:

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5 0
3 years ago
The sum of twice a number and 8 is 44. what's the number? show your work.
mezya [45]

Answer:

18

Step-by-step explanation:

We can work backwards with this and take 44-8=36

Then we divide it by two and thats 18

3 0
2 years ago
Which expression is equivalent to 33 · 63 · 23 without exponents? A) 3 + 3 + 3 + 6 + 6 + 6 + 2 + 2 + 2 B) 3 x 3 x 3 x 6 x 6 x 6
vesna_86 [32]

Answer:

Yuhh the answers c dawhggg trus me i just did the same thing lawl!

Step-by-step explanation:

7 0
3 years ago
Please can someone help me solve the question in the picture 10 points plus brainliest!!!​
Effectus [21]

Answer:

E. 2 1/2

E. 8.5 cm

C. 6 cm

Step-by-step explanation:

4............................

Scale factor = AE/AC = (4+6)/4 = 10/4 = 2.5

<u>Correct option is</u> E. 2 1/2

5............................

DE = ?

  • DE = √AD² - AE² = √15² - 10² = √125 = 5√3 ≈ 8.66
  • <em>For measure of AD see next question (6)</em>

<u>Close option is</u> E. 8.5 cm

6............................

AB = ?

  • AD/AB = 2.5 <em>the scale factor as per question 4</em>
  • (AB + 9)/AB = 2.5
  • 2.5*AB = AB + 9
  • 1.5*AB = 9
  • AB = 9/1.5
  • AB = 6 cm

<u>Correct option</u> C. 6 cm

8 0
3 years ago
A) x = -2<br> B) y =2<br> C) y= -2
LenKa [72]

Answer:

Step-by-step explanation:

This is a positive parabola so it opens upwards. The equation for the directrix of this parabola is y = k - p. k is the second number in the vertex of the parabola which is (0, 0), but we need to solve for p.

The form that the parabola is currently in is

y=a(x-h)^2+k so that means that a=\frac{1}{8}. We can use that to solve for p in the formula

p=\frac{1}{4a} so

p=\frac{1}{4(\frac{1}{8}) } which simplifies to

p=\frac{1}{\frac{1}{2} } which gives us that

p = 2. Now to find the directrix:

y = k - p becomes

y = 0 - 2 so

y = -2, choice A.

6 0
3 years ago
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