Find all missing angles

y+30+2y=180

Find the geometric mean of the pair of numbers 4 and 9.

By how many is 450 x 1000 less than 500,000

The perimeter of a rectangular pen is 136 meters. If the length is 5 meters more than twice the width, what are the dimensions of the pen?

Fission tracks are trails found in uranium-bearing minerals, left by fragments released during fission events. The article "Yo-yo Tectonics of the Nigde Massif During Wrenching in Central Anatolia" (D. Whitney, P. Umhoefer, et al.

You are given the numbers {32 + n, n/8, and / sqrt{n + 23}. Find the smallest value of n so that all of the numbers in the set are natural numbers.

About 450 manta rays are seen near lady Elliot island each year if you were to spot one manta ray at random what is the probability that it would be clouseau

The manager of a coffee shop has one type of coffee that sells for $7 per pound and another type that sells for $11 per pound. The manager wishes to mix 60 pounds of the $11 coffee to get a mixture that will sell for $8 per pound.

Find the perimeter of a square with an area of 702.25

Each person in Plimouth was given a plot of land 16.7 m wide by 40.8 m long. The Alden family had four members. What was the square area of the plot of land they were allotted?

Isabella has 42 photos of her family. She has half as many photos of her friends. The photo album holds 4 photos on each page. How many pages will Isabella need for all of her photos combined.