What is the value of a in the equation 3a + b = 54, when b = 9?

Is 3:4 equivalent to 12:24

The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 83.2 m.

Find the value of 21 + 4 (3^2 - 5). 25 37 100

Find the x value y=-6 y=4x+12

Suppose an investment of $1,700 doubles in value every 10 years how much is the investment worth after 20 years

The results from spinning a spinner multiple times are given in the table below. Color Frequency blue 17 yellow 14 green 13 red 9 purple 17 What is the experimental probability of spinning purple? A 17/43 B 17/50 C 17/70 D 17/60

Does the graph represent a function? Why or why not? -10

Simplify the following expression. (1/7x+3/8) + (2/9x-1/8)

At the beginning of a month your account balance was $53. During the month you deposited $562 and wrote a check for $486. What was your balance at the end of the month

Nick is stuck at the top of a Ferris wheel his mother is standing 38 feet from the base of the wheel watching him if the angle of elevation from Nick's mom to neck is 73° how far off the ground is Nick