John took four tests.

He earned an 80 on

three of the tests and

a 90 on the fourth

test. What is the

average of those

tests? Do not round.

The diameter of a human hair is 9 / cdot 10^{-5}9?10?5 9, dot, 10, start superscript, minus, 5, end superscript meters. The diameter of a spider's silk is 3 / cdot 10^{-6}3?10?6 3, dot, 10, start superscript, minus, 6, end superscript meters.

What is 1.5 million written in standard form

Find the sum of the sequence 37+38+39+40 + ... 130

If m∠A = 91° and m∠B = 40°, find m∠1.

Cesar had a part-time job last year. He worked every week for the year and made $23 an hour. He worked 28 hours each week. Cesar saved what was left of his earnings after paying all of his monthly expenses.

How can you use integers to represent da

Which of the following functions would not model exponential decay? August899 August899 10 months ago A. h (x) = 44 (0.89) ^2x B. j (x) = (0.34) ^x-3 C. b (x) = 876 (1) ^x D. z (x) = 7 (0.999) ^4x-2

A roller coaster with a mass of 1000 kg is shot to a speed of 30 m/s in 8 seconds. How much kinetic energy does this coaster have at the end of the 8 seconds? To receive full credit, show all of your work in the space below.

Junior has saved money in his piggybank over the winter. He wants to buy a $30 computer game. If he has 14 one-dollar bills, 16 half dollars, 12 quarters, 8 dimes, 25 nickels, and 10 pennies, how much more does he need to borrow from Dad to buy the

Find the Volume of a cylinder with a base area of 25pi inches squared, and height equal to the radius