2x+y=8 and y=x-7 solving systems by substitution

Consider the odd numbers 4, 9, 16, 36, 49, 64, and 81 are called square numbers. 1. Consider the odd square numbers less than 100. How do their factor sums differ from the factor sums of non-square odd numbers? 2.

A certain number was multiplied by 4. Then, this product was divided by 19.4. Finally 6.4 was subtracted from this quotient, resulting in a difference of - 8.4, What was this number?

Explain how multiplying by a whole number can result in a product less than one

The formula A = 146e0.03t models the population of a particular city, in thousands, t years after 1998. When will the population of the city reach 229 thousand?

What is the mean of the following set of data? {4,3,1, 6, 1,7}

Bob needs to mix 2 cups of liquid lemonade concentrate with 3.5 cups of water to make lemonade. Bob has 6 cups of lemonade concentrate. How much lemonade can he make?

The temperature decreased overnight by 15.2°C to a temperature of - 12.8°C. Suppose t represents the temperature before it decreased. Which equation can be used to represent this situation? A. t - 15.2 = - 12.8 B. t + 12.8 = - 15.2 C. t - 12.8 = 15.

The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 0.8 pound.

What is the surface area of a sphere with a circumference of 50 ft? Round the answer to the nearest tenth.

The table shows the prices for games and Bella soccer league. her parents and grandmother attend a soccer game. how much theu spend if they all went together in one car?