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3 years ago

Solve the following system of equations using Substitution, showing all work.

Mathematics

1 answer:

Elena L [17]3 years ago

3 0

Answer:

(x,y)=(5,-1)

Step-by-step explanation:

1. 2x+y=9 ---> y=9-2x

2. Substitute y=9-2x into 3x-2y=17 ---> 3x-2(9-2x)=17 ---> 3x-18+4x=17 --> 7x=35 ---> x=5.

3. Substitute x=5 into 2x+y=9 ---> 2*5+y=9 ---> y=9-10 ---> y= -1

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joanna split three pitchers of water equally among her eight plants.what fraction of a pitcher did each plant get

Valentin [98]

Answer: $\dfrac{3}{8}$

Step-by-step explanation:

Given : Joanna split three pitchers of water equally among her eight plants.

i.e. The total number of pitcher plants = 8

The number of pitcher plants split by Joanna = 3

Then , the fraction of a pitcher did each plant get is given by :-

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Hence, the fraction of a pitcher did each plant get = $\dfrac{3}{8}$

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3 years ago

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Goshia [24]

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Step-by-step explanation:

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3 years ago

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UkoKoshka [18]

Answer:

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Read 2 more answers

Four times the difference of a number and seven is 12

vekshin1

4(x-7)=12=

4x-28=12

add 28 to both sides

4x=40

x =40/4 = 10

x = 10

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