Can someone solve this and tell me how they did it?

The difference between a number and twenty is equal to the product of five and a number.

Y-1 --=-1 solve for y X+0

Sasha wants to know her average grade on her math tests. She earned a score of 70 on two tests, an 80 on one test, and a 90 on two tests. What is Sasha's mean score?

Given the Venn diagram below, which statement must be false? An irrational number is also a real number. Some rational numbers are not integers. Some natural numbers are not integers. All whole numbers are rational numbers.

What is 67912 to the nearest 10

Researchers designed a survey to compare the proportions of children who come to school without eating breakfast in two low-income elementary schools. A random sample of 80 students from School 1 found that 19 had not eaten breakfast.

Built in 1599, the Globe Theatre was home to William Shakespeare and his performing company, The Lord Chamberlain's Men. It was a circular amphitheater that stood 3-stories tall and had a diameter of 100 feet.

If 3 is added to a number and the sum is tripled , the result is 21 more than the number. find the number.

The lengths of the base of a trapezoid is 12ft and 5ft the height is 96 in what is the area of the trapezoid

The Ferrels save $150 each month for their next summer vacation. Write an equation that they can use to find s, their savings, after m months.

The sum of three consecutive integers is - 255. what are they?