How many times smaller is 2 * 10-12 than 4 * 10-7? scientific notation

Pete's parents are offering to pay him a weekly allowance for doing his chores. They've given him two different payment options for a period of 15 weeks.

What number is 68% of 12?

Write a number that has four digits with the same number in all places, such as 4,444

Ricardo's recipe for four loaves of bread requires 2/3 cup of olive oil he only wants to make one loaf Ricardo makes a model to find out how much Ol Ricardo's recipe for four loaves of bread requires 2/3 cup of olive oil he only wants to make one

A 6 foot long board is propped against the wall of a house. The board forms a 60 angle with the ground. How far is the base of the board from the wall?

What is 0.83000000001 a rational or a irrational?

Show that 1+kx is the local linearization of (1+x) ^k near x = 0

Write these decimal fractions in words 42/100

I'm stuck on this question: Find the 3 consecutive numbers whose sum is 438. Can someone take me through it?

Enter the first 8 terms of the sequence with f (1) = 42 and f (n) = f (n - 1) - 5 for each whole number greater than 1.