Tyson began solving the system {4x+2y=64x+5y=15 by writing - 3y=-9.

Which property justifies this step?

division property of equality

multiplication property of equality

substitution property of equality

subtraction property of equality

william has $7.50 to spend at a pretzel shop a large pretzel cost $1.25 and a soft drink cost $0.90. he buys one drink and p pretzels. which inquality can be used to find the number of pretzels william can buy.

The rectangle below has an area of x^2-11x+30 sq meters and a length of x-5 meters. What expression represents the width of the rectangle?

Julio is training for a marathon. He runs 34 miles the first week and 29 miles the next week. During the third week, he wants to run as many many les as he ran the first two weeks combined.

Use the formula for interest P=750 r=7% Y=25 A=?

Which is bigger 8.508 or 8.58

Solve 1/3 x = - 4/5?

What is the volume of an aquarium that is 2 yards wide, 1.5 yards deep, and 1 1/3 yard long?

g a. A 99% confidence level and a sample of 24 observations. 2.807 2.807 Correct b. A 90% confidence level and a sample of 24 observations. 1.714 1.714 Correct c. A 99% confidence level and a sample of 20 observations. 2.845 2.845 Incorrect d.

Rate of proportionality for (-2,4) and (-1,1)

Write the number in standard form 4,00+300+20+9