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Bess [88]
3 years ago
7

The diameter of a circle measures 20 yd. What is the circumference of the circle?

Mathematics
1 answer:
Pani-rosa [81]3 years ago
5 0

Answer: 62.8 yd

Step-by-step explanation:

Circumference= diameter*pi

20*3.14= 62.8

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Find the dimensions and maximum area of a rectangle, if it’s perimeter is 24 inches
Andru [333]
Perimeter = 24

triangle perimeter = 2W + 2L

24= 2W + 2L

12 = W + L

L= 12-W

AREA = W*L

AREA = (W)(12-W)
A = 12W-W^2
 
maximum occurs when you take the derivative 

d/dw=12-2w = 0 
w=6

after this i think we can say 6 * 6 = 36 is the maximum area.. not to sure, havent done a problem like this in a while

hope this helps 

or if we know what w=6 we can find L

L = 12-w which we still get 6<span />
6 0
3 years ago
Which expression does not belong with the other three? Explain your reasoning. 8 = x —2 3 = x ÷ 4 x − 6 = 5 x —3 = 9
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Answer:

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Step-by-step explanation:

<u>Given expressions:</u>

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3 of them involves addition, one of them - multiplication

The second expression doesn't belong

4 0
3 years ago
Solve 4x^4 + 7x^2 - 2 = 0.
ziro4ka [17]

Answer:

D = (4x^2-1)(x^2+2)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
5. a) Which of these numbers are perfect
jok3333 [9.3K]

Answer:

Part A: 1 & 225, A number times itself equals a perfect Square.

Part B: No, 289 is NOT perfect square.

Step-by-step explanation:

Part A: 1*1=1, 15*15=225 (Perfect Squares)

Part B: Utilizing the Factor Rainbow one can see that the same number does not exist on both sides of the rainbow simultaneously.

4 0
3 years ago
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erik [133]
<span>5/6 </span>is your answer as a fraction and as a decimal it is: 1.166666667 or rounded up to 2 d.p. its 1.17. This is because 2/3 means 2 ÷ 3 which is 0.6666667 and 1/2 mean 1 ÷ 2 which is 0.5. If you add these together you get 1.16666667.<span>
Hope I helped a bit. :)</span>
5 0
3 years ago
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