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sattari [20]
3 years ago
15

Find the area and circumference of a circle with diameter 8yd

Mathematics
2 answers:
Klio2033 [76]3 years ago
5 0
The area is 25.12 and the circumference is also 25.12
Lilit [14]3 years ago
4 0
50.27yd²
Using the formulasA<span>=</span><span>π</span><span>rto the second power</span>d<span>=</span><span>2</span><span>r</span>Solving forAA=14πd2=14·π·82≈50.26548yd²
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A person invest $2,940 in an account tgat earns 4.1% annual intrest. Find when the value of the investment reaches 5,000. If nec
serg [7]

Answer:

13.22

Step-by-step explanation:

were solving for t and we know:

a(t)=p(1+(r/n))^nt

5000=a-the total

2940=p-the starting amount

.041=r-the rate

1=n-compound (annual)

plug this into a graph :

5000=2940(1+(.041/1))^x

and you get : 13.22

7 0
3 years ago
Madam Siti bought the same lengths of red and yellow ribbons. After she used 836 cm of the red ribbon, the length of the yellow
Yuliya22 [10]

Answer: 1045 cm of red ribbon and 1045 cm of yellow ribbon

<u>Step-by-step explanation:</u>

Let R represent the amount red ribbon and Y represent the amouont of yellow ribbon.

  • bought the same lengths of red and yellow: R = Y
  • after used 286 of red, yellow is 5 times the remaining red; 5(R - 836) = Y

Use substitution method to solve:

5(R - 836) = R

5R - 4180 = R   <em>distributed 5 on the left side</em>

4R - 4180 = 0   <em>subtracted R from both sides</em>

4R = 4180         <em>added 4180 to both sides</em>

R = 1045         <em>divided both sides by 4</em>


5 0
3 years ago
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You live in a big house. The master bathroom is 12 by 20 feet. Calculate the area of your bathroom.
Alla [95]
(12)(20)= 240
The answer is going to be B. 240 sq ft
5 0
3 years ago
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Square root of 64 + cube root of 64 is​
seropon [69]

Answer:

12

Step-by-step explanation:

\sqrt{64} + \sqrt[3]{64}

= 8 + 4

= 12

8 0
3 years ago
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Peter buys 8.5 square feet of carpet. The carpet costs $10.20 per square foot. How much does Peter pay for the carpet?
Solnce55 [7]

This is what i did to solve

8.5*10.2=$86.70

7 0
3 years ago
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