Solve the system of equations using (a) substitution and (b) Elimination

-x-9y = 16

10x+20y=20

Describe a real-world situation in which you represent a number in scientific notation and a situation in which you represent a number in standard form.

What is 10 to the 20ith power?

Bob pays a $2 toll each way when going to and from work. How much does he pay in four weeks, working five days a week

What is the answer of x - 62,500 = 0.25y

What is the probability of rolling an even number first and an odd number second

Find the area of a triangle with legs that are: 15mm, 10mm, 20mm

192192192 is what percent of 600600600?

An investment advisor invested &14,000 in tow accounts. One investment earned 8% annual simple interest. And the other 6.5% annual simple interest. The amount of interest earned for 1 year was $1,027 how much was invested

Sales increased by 1/2 last month. If the sales from the previous month were $152,850 what were last months sales?

A male elephant weighs 6708 pounds a female weighs 5,823 to the nearest hundred what is the total weigh?