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laila [671]
3 years ago
15

I need help with this question ​

Mathematics
1 answer:
Sophie [7]3 years ago
7 0

Answer:

C

Step-by-step explanation:

using the pythagorean theorem,

a²+b²=c²

8²+7²=c²

64+49=c²

113=c²

\sqrt{113 =  \sqrt{c}² }

10.63=c

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A plane travels 990 miles to London and back. the trip there was with the wind.it took 10 hours.the trip back was into the wind.
tino4ka555 [31]

Answer:

C.

Step-by-step explanation:

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3 years ago
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Consider the diagram. BC is parallel to DE. Find the length of BC.
Lubov Fominskaja [6]

Answer:

It should be 5 but my brain is literally dead

Step-by-step explanation:

Please give brainlest

3 0
2 years ago
A painting is 2 in tall and 3 in wide. If it is enlarged to a width of 15 in then how tall will it be?
vekshin1

Answer:

10 in

Step-by-step explanation:

Old proportions:

2 x 3

New proportions

h x 15

Assuming the painting has been increased by a constant scale factor.

Where x is the unknown scale factor, and h is the height after it has been enlarged.

3 * x = 15\\2 * x = h

Rearrange second equation:

3 * x = 15\\x =\frac{h}{2}

Substitute:

3*\frac{h}{2} =15\\\frac{h}{2}=5\\h=10

7 0
3 years ago
Read 2 more answers
Select the correct value.
Dafna1 [17]

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<em>hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>be</em><em> </em><em>helpful</em><em> </em><em>to</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em>

7 0
3 years ago
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What is the correct evaluation of 4x2 - 2x + 5, when x is equal to 2?
meriva

Answer:

9

Step-by-step explanation:

  1. Rewrite the problem

4x2-2(2)+5

2. Solve the problem. Do the multiplication first and then the subtraction and addition

8-2(2)+5

8-4+5

4+5

9

The final answer is 9

3 0
3 years ago
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