A certain alloy contains 5.25% copper. How much copper is there in a piece weighing 200 pounds? A. 1.05 pounds B. 10.5 pounds C. 105 pounds D. 1050 pounds

Find a two-digit number which is both a square number and a cubic number.

The resistance, R (in ohms), Of a wire varies directly with the length, L (in cm) of the wire, and inversely with the cross-sectional area, A (in cm2). A 500 cm piece of wire with a radius of 0.2 cm has a resistance of 0.025 ohm.

What is greater 7/5 or 14/10

Write two expressions to represent the following situation. Then, find the answer. When Nathan went to bed, the outside temperature was 28°F. When he woke up the next morning, the temperature had decreased to - 13°F.

A number is said to be a perfect square if it can be written as an integer squared, and a perfect cube if it can be written as an integer cubed. for example, four is a perfect square (2²), and eight is a perfect cube (2³).

Why did the kangaroo go see a psychiatrist

Annalisa, Keiko, and Stefan want to compare their heights. Annalisa is 64 inches tall. Stefan tells her, "I'm about 7.5 centimeters taller than you." Keiko knows she is 1.5 inches shorter than Stefan.

A dozen apples cost$4.92 for a dozen apples is a ratio of what per Apple

Solve the equation using square roots: 2x^2 - 17 = 15

Lucy was playing a card with two friends. They were playing with a deck of 21 cards. Lucy dealt 1/3 of the deck to each person. How many cards did lucy get? (for my nine year old sister)