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Option C

Step-by-step explanation:

we know that the original triangle's area was 20 so the new triangle's area should be 40.

20 * 2 = 40

So option C

d) 80 in squared

Step-by-step explanation:

when a triangle doubles in dimensions, it's area is 4 times as large.

x = 17

step-by-step explanation:

in the given figure, two triangles are inscribed in a circle where ∠bae ≅ ∠dae which makes the side be and de equal so we can write it as:

3x - 24 = x + 10

solving this equation for x to get:

3x - x = 10 + 24

2x = 34

x = 34/2

x = 17

therefore, the value of x = 17.

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8