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OverLord2011 [107]
3 years ago
8

Can someone explain if I am wrong?

Mathematics
2 answers:
snow_lady [41]3 years ago
8 0

Answer:

Step-by-step explanation:

A. (b - 10)(b + 10) = 180

b^{2}-100 = 180

b^{2}= 280

b = \sqrt{280}

b = 2\sqrt{70}

Your A is correct.

B. 2\sqrt{70} - 10 = c

c = 6.733200531 = 6.73  Try rounding to 3 significant figures.

C. 2\sqrt{70} + 10 = d

d = 26.73320053 = 26.7

You are correct in all 3 answers. Perhaps you should try rounding to 3 significant figures for your c and d values.

I hope this helps!! ^-^

Andrew [12]3 years ago
6 0
Answer: A first one at the top
I hope this helps you with your stuff !
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Question 3)
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4 years ago
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kati45 [8]

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Sin A = o/h

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3 years ago
Ewan is building a maze for his pet rats out of 2x4s. He needs two pieces that are 2 ¾ feet long, one that is 3.5 feet long and
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I think there should be more to the question. If you are looking for the best combination to buy it would be two 7 foot boards

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Why are (4, 6) and (6, 4) not at the same point on a grid?
sdas [7]

Answer and Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
Compute the following volume and surface area.
Vesnalui [34]

The surface area of rectangular solid is 208 square centimeter

The volume of rectangular solid is 192 cubic centimeter

<h3><u>Solution:</u></h3>

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Surface Area = 2wl + 2lh + 2hw

where w is the width, the l is the length, and the h is the height.

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Thus the surface area of rectangular solid is 208 square centimeter

<h3><em><u>The formula for volume of rectangular solid is:</u></em></h3>

Volume = Length \times Height \times Width

volume = 4 \times 6 \times 8 = 24 \times 8 = 192

Thus the volume of rectangular solid is 192 cubic centimeter

7 0
3 years ago
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