My parents increased my pocket money by 10% and then three months later increased it by further 10%

my father said this was an increase of 21% can you explain this

Write the following as an algebraic expression. Subtract 10y-7 from 5y+1

Fill in the ratio table for 24

Calculate the surface area of a prism with the following dimensions. The length (l) = 7 units, the width (w) = 2 units and the height (h) = 6 units: a. 278 sq. units c. 136 sq. units b. 176 sq. units d. 587 sq. units

What is the value of 6.75 + 5.25-3.25 + 1.1? A) - 4.15 B) - 3.65 C) 9.85 D0.65 What is 11/16 + 4/10 - 3/4 A) 27/80 B) 3/8 C) 6/11 D) 3/20 The value of y is proportional to x. When x = 3, then y = 15.

Simplify the expression. 10P8

How many tiles that are 12 inches by 18 inches will be needed to tile a floor that is 15 feet wide and 20 feet long?

Do I need to flip my sign? 2x - 3y≥12

What's the answer for the sum of three consecutive numbers is 126. What is the smallest of the three numbers

A study intends to estimate a population mean with an unknown population standard deviation and a sample size of 15. Which of the following is closest to the appropriate critical value to create a 98% confidence interval?

Which inequality is true for all real numbers? Check all that apply. a-b ac 2 bc If a 2 b, then a + c2b+c If c>d, then a-c If a