Select the correct answer. Every dimension of a triangular pyramid is multiplied by 10 to produce a new figure that is geometrically similar. What effect does this have on
the surface area of the pyramid?
OA The surface area of the pyramid is multiplied by 10.
OB. The surface area of the pyramid is multiplied by 50.
Ос. The surface area of the pyramid is multiplied by 100.
OD The surface area of the pyramid is multiplied by 1,000.
ОЕ The effect on the surface area cannot be determined.

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

What is the value of x when x + 7 = 21?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.