A metalworker has a metal alloy that is 20 % copper and another alloy that is 60 % copper. How many kilograms of each alloy should the metalworker combine to create 90 kg of a 52 % copper alloy?

a cuboidal tank can store 6600 litres of water. the external dimensions of the tank are 3.5m, 1.2m and 2.4m. if the walls of the tank are 10cm thick, then what is the thickness of the bottom of the tank

Is 336 inches greater or less than 18 feet

What is the cross section parallel to the base of a circular pyraimd? A.) circle B.) square C.) parallelogram D.) triangle

Alphonso is training for a marathon. He runs 6 and a half miles every 2/3 hour. How far does he run in 2 hours

The perimeter of a rectangular garden is 78 feet. The width is 11 feet shorter than the length. Write an equation to find the dimensions of the garden. Let x = width.

Identify the two statements that contradict each other: A) Line FA || Line AC B) Line FA and AC are skew C) Line Fa and AC do not intersect

The difference of 9 times a number and 2 is 67. Which equation below can be used to find the unknown number?

We need to substitute these problem you can take first one to understand

Which of the following situations can be represented by the absolute value of 10? Check all that apply. The temperature is 10 degrees below zero. Express this as an integer. Determine the size of Harold's debt if he owes $10.

What is the median for this set of data 37 14 22 45 57 58 61 A) 41 B) 45 C) 46 D) 58