Ava is 23 cm taller than Olivia is half the height of Lucas. If Lucas is 1.78 m tall, how tall are Ava and Olivia? Express their height in centimeters.

Justin weighed 8lb 12 oz when he was born. At his two week check up he had gained 8 ounces. What was his weight in pounds in ounces?

Evaluate 6x - (-6) for x=2

What is - 5/7, - 1 5/11, - 1.45, - 1 91/200

A submarine starts out at sea level and descends vertically at a rate of 20 ½ feet per second. Write an equation and solve to find out how long it takes for the submarine to reach - 120.4 feet? Round your answer to the nearest whole number.

The cost (in dollars) of making $b$ bracelets is represented by $4+5b$. The cost (in dollars) of making $b$ necklaces is represented by $8b+6$.

What is the answer to the problem 2/3x-40=5/6 (x+36)

What is the value of 5 x (s+t) when s+t=289?

Three coins are tossed at the same time what is the probability that exactly 2 heads appear

What is the 32nd term of the arithmetic sequence where a1 = 12 and a13 = - 60

Solve the following for y: 2x 2y = 8 y = - x 4 y = x 4 y = 3x y = - 3x