Which of these shows the result of using the first equation to substitute for y in the second equation, then combining like terms?

y = 2z

2x + 3y = 16

A. 5x = 16

B. 4x = 16

C. 5y = 16

D. 8x = 16

Item 16 A scale drawing of a triangular sign has a scale factor of 1:8. Which statements are true? The ratio of the area of the scale drawing to the area of the sign is 1:8. The ratio of the area of the scale drawing to the area of the sign is 1:16.

Starting at 6:00 a. m., a bus stops at my street corner every 15 minutes. Also starting at 6:00 a. m., a taxi cab comes by every 12 minutes. What is the next time both a bus and a taxi are at the corner at the same time?

Find the volume of the hemisphere with a radius of 7 inches. Round your answer to the nearest tenth.

Slove for m m+7=3+m+4

Jim has three times as many comic and Charles. Charles has 2/3 as many books as Bob. Bob has 27 books. How many comic books dose Jim have?

What's the probability of P (T) ?

Evaluate. Be smart, (2.31∙5.82+4.18∙2.31+90∙2.31) : 2.31∙0.55

1. What 3 things must be true for a binomial to be a difference of squares? 2. How do you determine the square root of a term whose variable (s) have exponents greater than 2? 3. Is this a difference of squares? Show your work and explain.

If two shapes have the same area, must they have the same perimeter?

Keith has $500 in a savings account to beginning of the summer he wants to have at least $200 at the end of the summer he withdraws 25 per week for the tickets how many weeks can Keith withdraw money from his account