How do i solve a question like:

After earning interest, the balance of an account is $420. The new balance is 7 over 6 of the original balance. How much interest was earned Show your working.

Largest square root of 80

Armando painted 2 7 of his house on Saturday morning and 3 7 of his house on Sunday morning.

How would the number be written in standard form? 30,000+500+70+6

The perimeter of an equilateral triangle is 33 centimeters. Find the length of each of its sides.

On a particular day in July, there is a 20% probability of rain in Vancouver, a 65% probability of rain in Calgary, and a 75% probability of rain in Saskatoon. What is the probability that it will rain in all 3 cities on that day?

6,4,7,2 what is the average of 5

Boxes of fruit snacks are on sale at the grocery. The boxes are the same size. A family needs to purchase 24 boxes. There are 3 boxes for 5 dollars and 4 boxes for 6 dollars.

Last year, a construction worker had a gross income of 29,700 of which he contributed 7% to his 401 (k) plan. If he got paid monthly, how much was deducted from each paycheck for his 401 (k) plan?

Find the circumference of both circles. Use 3.14 for a 6 in. 9 in.

Determine which of the following ordered pairs satisfies the given system of equations. {-2x+y=8 y=2x/5 - 8 Select all that apply: (72,-72) (-3,2) (-1,5) (-2,-445) (-10,-12)