Solving systems of equations by substitution, Algebra

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How do you find y & x equal with -4x+y=6 and -5x-y=21

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I need help, on my math home work it says draw a numberline and put the fol...

on my math home work it says draw a numberline and put the following numbers on order -2.5 2.5 4\3 10percent -100percent -6\3 02 [-4] o -4\5

New math, What is the effectiveness of new math?

What is the effectiveness of new math?

Operational rasearch, 1) Maximize z = 4x1 + 10x2 Subject to 2x1 + x¬2 2x...

1) Maximize z = 4x1 + 10x2 Subject to 2x1 + x¬2 2x1 + 5x¬2 2x1 + 3x¬2 x1 , x¬2 >=0

Expressions and inequlites, A blue whale gains 2.3 tons a month for the fir...

A blue whale gains 2.3 tons a month for the first year of life. If a blue whale weighed 15 tons at birth, how much will it weigh on its first birthday?

Number and algebra reasoning, My age is a multiple of 3 and and a factor of...

My age is a multiple of 3 and and a factor of 60. The sum of my digits is 3. How old am I? Im thinking either 180 or 20

Construct a decision tree example, Consider the following game. A player ro...

Consider the following game. A player rolls two dice. If the outcome on both dice is the same (doubles), the player wins $5. If the sum is 7 or 11, the player wins $3. If neither o

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