1. Factorise

a y2 - 49

Julio checked the temperature of a bag of frozen peas and found it was at - 13°C. After he left the bag out of the freezer for an hour, its temperature rose to 8°C. What was the change in temperature in an hour?

How do you solve this problem 3 (y-2) - x=5x+18

Is x = - 2 a solution to 3x-6=12?

7,209,000 in the year 2050 and that this will be 24% of the population. What is the total population?

The length of a rectangular garden is 1 foot less than 3 times its width. The area of the garden is 70 square feet. What is the width of the garden? A. 2 feet B. 5 feet C. 7 feet D. 10 feet

A1, a1r 1, a1r 2, a1r 3, a1r 4, ... a1r n-1 is the general formula for the Sum of a what?

N a problem it says that x is "at most - 5." What does this mean?

Número de 4 dígitos divisible entre 5 y 9

How many 15 inch steel rods can you cut from the 20 - foot rod

A student has two square pyramids. The second square pyramid has base side lengths that are twice that of the first pyramid. The formula for the volume V of a pyramid with base area B and height h is V = 13Bh.