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solniwko [45]
3 years ago
8

Y=-x-5 2x+y=5 substitution method

Mathematics
1 answer:
Mumz [18]3 years ago
5 0

Answer:

x = 10

y = -15

Step-by-step explanation:

putting value of y in equation 2

2x+(-x-5)=5

2x-x-5=5

x-5=5

x=5+5

x= 10

putting value of x in equation 1

y=-10-5

y= - 15

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3 years ago
A bag contains 5 2/5kg of sand. The bag has a hole in it. Every 10 minutes, 1 2/3kg of sand escapes from the bag. After 20 minut
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Quantify of sand in a bag =

= \: 5 \frac{2}{5}  \ \:

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Quantity of sand that will escape in 20 minutes :-

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therefore \:  ,  \: 2 \frac{1}{5}  \: kg \: sand \: is \: left \: in \: the \: bag \: .

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3 years ago
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