exam Maths Puzzle Numerical Ability

Solve each system by the addition method

2x+3y+11
7x-4y+6

and

2x-y=-5
3x+2y=3

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exam Other Question

A farmer went to the market and bought 100 animals. Each chicken cost .10 cents, pigs cost $2.00 and sheep cost $5.00. The farmer spent $100. How many of each animal did the farmer buy? must determine the volume of a 250mL beaker on two different ways.
Height= 9.03 cm
Diameter=6.73
Raduis= 3.37
use equation V=pieh to calulate the volume in cubic centimeter