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enyata [817]
2 years ago
10

What is x+y=-20 and 6x-5y=-20 with elimination method

Mathematics
1 answer:
Lerok [7]2 years ago
4 0

Answer:

Step-by-step explanation:

x + y = -20......multiply by -6

6x - 5y = -20

-----------------

-6x - 6y = 120 (result of multiplying by -6)

6x - 5y = -20

---------------add

-11y = 100

y = -100/11 <======

x + y = -20

x + (-100/11) = -20

x - 100/11 = -20

x = -20 + 100/11

x = -220/11 + 100/11

x = - 120/11 <========

solution is : x = -100/11 and y = -120/11 or (-120/11 , -100/11)

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mrs jones gave 1/5 of a cake to her neighbour. she then sliced the remainder into 3 pieces for her 3 children, ken, ron and davi
Arturiano [62]

The fraction of the cake that was ron's pieces is 1/5.

<h3>What is the fraction of the cake was ron's pieces?</h3>

Ratio demonstrates how many times one number can fit into another number. Ratios contrast two numbers by ordinarily dividing them. A/B will be the formula if one is comparing one data point (A) to another data point (B).

Since Mrs Jones gave 1/5 of a cake to her neighbour, the remaining fraction will be:

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The fraction of the cake that was ron's pieces will be:

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Answer:

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another way:

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