Explanation

40% of x = 4 means 0.4x = 4 which gives x = 10

What is the median value of \(\$268, \$1,258, \$654, \$1,258, \$900, \$1,558, \$852\)?

To find the height of a building, Oscar stuck the end of a \(4 \frac {1}{2}\) -foot stick 6 inches straight into the ground. He measured the shadow of the stick and found it was 1 foot long. Oscar then measured the building's shadow and found it was 16 feet long. How many feet tall is the building?

A sum of money is increased by its fifth part and it amounts to \(\$ 30\) . What was the original sum?

Peggy sleeps \(7 \frac{1}{2}\) hours at night. Her clock radio is set for 6:15 A.M. At what time does she fall asleep?

Evaluate \(\frac{\sqrt{121 \div 11}}{33 \times 15}\)

What will be the value of p in the equation \(\sqrt{p^{2}-25}=12\)?

What are the factors of \(\frac{a^{3}}{1000}+1\) ?

Simplify:\(a(3+5 a)-4\left(a^{2}+5\right)\)