We're told x=-5 and y=11 and asked to evaluate a few expressions. That just means substitute these values into the expressions and compute the exact numerical answer.

$4y-10x = 4(11) - 10(-5) = 44 + 50 = 94$

Answer: 94

x to the power of 3

$x^3 = (-5)^3 = -5 \times -5 \times -5 = -125$

Answer: -125

•6y to the power of 2

Probably means

$6y^2 = 6(11)^2 = 6(121) = 726$

Answer: 726

$5(3x+2y) = 5(3(-5) + 2(11)) = 5(-15 + 22) = 5(7) = 35$

Answer: 35

•(y-x) to the power of 2

$(y - x)^2 = (11 - -5)^2 = 16^2 = 256$

Answer: 256

6 0

3 years ago

A plane intersects a rectangular pyramid horizontally as shown. Describe the cross-section. A) circle B) rectangle C) trapezoid

Paladinen [302]

A plane cuts horizontally across a rectangular pyramid will always be a rectangle. (Answer B)

6 0

3 years ago

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