Solve area problem.Find the total area of the roof of the garage.
A. 306 ft2
B. 52 ft2
C. 153 ft2
D. 459 ft2
Answer: A
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Write an equation using the variable x to represent any unknown quantity. Do not solve the equation.After adding 4 to a number, the result is 10 less than triple the same number. Write an equation for which the solution gives the unknown number.
A. x = 3x - 10 + 4 B. x + 4 = 3x - 10 C. x + 4 = 10 - 3x D. x + 4 = 3(x - 10)
Solve the problem.A bicycle wheel rotates 500 times in a minute as long as the rider is pedalling. If the rider stops pedalling, the wheel starts to slow down. Each minute it will rotate only 2/3 as many times as in the preceding minute. How many times will the wheel rotate in the 4th minute after the rider's feet leave the pedals? Round your answer to the nearest unit.
A. 19 times B. 0 times C. 148 times D. 99 times
Simplify.5 ? 18 + 2 ? 15
A. 120 B. 1380 C. 1500 D. 240
Write the equation of the line with the given slope and y-intercept.m = -4, b = 9
A. y = -4x + 9 B. y = -9x + 4 C. y = 4x - 9 D. y = 9x - 4