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rusak2 [61]
3 years ago
15

Please help with these

Mathematics
1 answer:
oee [108]3 years ago
3 0

Answer:

A) √29 = x   B)  x = √41.8   C) √109 = x    D) x = √489.24

Step-by-step explanation:

A) 2² + 5² = x²

    4 + 25 = x²

          29 = x²

        √29 = x

B) 3.6² + x² = 7.4²

 12.96 + x² = 54.76

-12.96          - 12.96

              x² = 41.8

              x = √41.8

C) 3² + 10² = x²

    9 + 100 = x²

           109 = x²

          √109 = x

D) 7² + x² = 23.2²

    49 + x² = 538.24

    -49           -49  

            x² = 489.24

            x = √489.24

If these answers are correct, please make me Brainliest!

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The given expression will be greater than zero.

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If a < 0 and b < 0, then 5a^3 is < 0 (5a^3) is negative;

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The area of a rectangle is 56 cm. The length is 2 cm more than x and the width is 5 cm less than
AURORKA [14]

The value of x is 6 cm.

Step-by-step explanation:

Given,

Area of rectangle = 56 cm

Length of rectangle = x+2

Width of rectangle = 2x-5

Area = Length * Width

56=(x+2)(2x-5)\\56=2x^2-x-10\\0=2x^2-x-10-56\\2x^2-x-66=0

Factorizing

2x^2+11x-12x-66=0\\x(2x+11)-6(2x+11)=0\\(2x+11)(x-6)=0

Either,

2x+11 = 0          => 2x=-11

Or,

x-6=0               => x=6

As x is added to dimension, it cannot be negative.

Therefore,

The value of x is 6 cm.

Keywords: rectangle, factorization

Learn more about factorization at:

  • brainly.com/question/11921476
  • brainly.com/question/1232765

#LearnwithBrainly

3 0
3 years ago
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