7x-4y=-7

5x+y=22

how do I solve this using substitution?

Find the product. - 1/4y (2y^3 - 8)

Jordan says that from the information supplied in the diagram, she can conclude that R is on the perpendicular bisector of QS. Robert disagrees. Is either of them correct? Explain your reasoning

What is 7x²-4+6x³-4x-7 in standard form

Wayne and Winston are scuba diving and are ascending to the surface. The function y = 30x - 105 represents Wayne's elevation in feet in terms of the time in minutes he ascends.

Choose the correct simplification of (6x - 5) (2x^2 - 3x - 6) 12x3 + 28x2 + 21x + 30 12x3 - 28x2 - 21x + 30 12x3 + 28x2 - 21x + 30 12x3 - 28x2 - 21x - 30

Darren decided to gift wrap his present. He knows that his gift is in the shape of a cube and that one side is 5 ½ inches. Darren has 150 square inches of paper. Is this enough to wrap the gift? Explain your answer.

The sum of two numbers is 90. their difference is 12. what are the numbers?

Stat crunch in a random sample of 200 adults, what is the probability that less than 33 % have no credit cards?

There are 2.54 centimeters in an inch. when using this conversion factor, how many significant figures are you limited to?

How many 4 letter words can be formed from the alphabets?