78 is 15% of what number? Solve using an equation. Show your work.

On a cold winter day in Denver, the morning temperature was 14° Fahrenheit. By noon it had fallen 9°, and by 5pm that afternoon it had fallen another 5° What was the temperature at 5pm?

Reuben bought 3 CDs that were each the same price. Including sales tax, he paid a total of $46.50. Each CD had a tax of $1.30. What was the price of each CD before tax?

What expression can be used to find the sum of the polynomials (9-3x^2) + (-8x^2+4x+5)

frank, joe and carl went with their Grandma to the bakery. she said that they could use the change she got back to buy mini-chip cookies to share equally she bought a cake for $11 and 2 loaves of bread for $2.

Rayna wrote 260,980 as (2 x 100,000) + (6 x 10,000) + (9 x 1,000) + (8 x 100). what error did rayna make?

If y varies inversely as the square root of x, what is the constant of proportionality if y = 16 and x = 4?

How to convert 24cm to L

Which of the following is not an attribute of a linear equation? The equation has a single variable. The variable must be raised to the second power. The equation is of the first degree. The equation has an equal sign.

Write down the 3rd term in the sequence given by t (n) = 2n*2

Sarah's age is five less than twice her sister's age. Sarah is fifteen years old. Which equation could you use to solve for the age of Sarah's sister? 2x - 5 = 15 2 (15) - 5 = x 15 = 5 - 2x 15 - 5 = 2x