What is the solution of the system?

{5x-y=-21

{x+y=-3

784,072 rounded to the nearest hundred thousand

How do you divide 0.6144 1.6

15.839 rounded to nearest tenth

Estimate the value of 50.75x0.18

P (a) = 2|-1/2a| find p (-2)

A coin has two sides: heads and tails. A die has six sides, numbered 1 through 6. If you flip the coin and roll the die, what is the probability that you flip ''heads'' and roll a 4, 5 or 6?

I need the answer for my kid

Sally had a book collection that she had been working on for quite a while. She was given seventeen books from her 6th grade teacher and now she has 56 books.

X^2-30x+29=0 How do I work this

A certain slsa is made with 6 parts tomatato and 2 parts bell pepper. how many cups of tomato should be combined with 1.5 cups bell pepper