How do I do substitution for this problem

y=4x-9

y=x-3

The equation 10x + 5y = 150

Write the following decimals in order from smallest to largest:.021,.12,.2,.02

8 to the power of 2 : 4 * (2+3) - 9

The random variable X is normally distributed with mean 82 and standard deviation 7.4. Find the value of q such that P (82 - q < X < 82 + q) = 0.44.

Solve the system of equations algebraically 5x - 3y = 6 6x - 4y = 2

Are the following statements true or false? Give an exam- ple to illustrate your answer. a) Every integer is a whole number. b) The sum of two negative numbers is always negative. c) A negative number plus a positive number is always negative.

A five-sided solid has the numbers 1, 2, 3, 4, and 5. what is the probability of rolling two five-sided number solids and getting a sum of either a 3 or an 8? user: a bag contains 8 blue marbles, 6 red marbles, and 4 green marbles.

How many times the value of 0.92 is the value of 0.092

Ketisha is practicing for a marathon by running around a track thats is 440 yards long. yesterday she ran around the track 20 times. How many miles did she run?

Nine friends are going to share 5 pounds of ice pop sticks equally. What fraction does each friend get? A. 4/5 pounds. B. 5/5 pounds. C. 4/9 pounds. D. 5/9 pounds.