exam
Maths Puzzle
Numerical Ability
Without using a calculator, find the value of 7^103-7^101/7^102+7^100. Show your work. (Hint: factor)
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exam Other Question
I have two questions Solve Algebraically
#5 N= -2M t 9
N= 3M -11
#6 y = 1.5x -8
y = -2.5x t 2.5
An alloy of metals is 25% copper another alloy is 50% copper. How much of each alloy is used to make 1000 grams of an alloy with 45% copper.
Can you help us write this equations?