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andrey2020 [161]
3 years ago
6

4x+12=-7y -y+12=4x PLS HELP!!!! Addition/ Elimination method

Mathematics
1 answer:
hoa [83]3 years ago
3 0
4×+7y=-12 __ -4x-y=-12 ________ 0x+6y=-24 , so you eleminated by it self 6y/6=-24/6 , you get : y=-4 and then you plug in 4x+7(-4)=-12 , that's your answer 4x-28 =-12 , you divided in both side 4x=-12+28 , 4x=16 , and then x=16/4 =4 , so x=4
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I need help with number 1
Marianna [84]

Answer:

1a. 0< -4 false

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1c. 4<= -1/2 false

8 0
3 years ago
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Eddi Din [679]
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Miranda earned $c for working 8 hours. Write an expression to show how much Miranda earned for each hour she worked.
BabaBlast [244]
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3 years ago
A random sample of students were surveyed as to how much non-school screen time
GaryK [48]

The percentage of students who spend less than 4 hours a week on screens which reported a grade average below 80 is 50%

Given, we have the report representing children spending time online, on social media or watching T.V, which has there effect on there grades as above or below 80.

By the question we know that the number of students who spends less than 4 hours a week on screen is:

9 + 9

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3 0
1 year ago
Here are the costs of the sametypes is shops shop a pack 4 batteries £1.60
dalvyx [7]

Answer:

Cost in shop A is lesser.

Step-by-step explanation:

Given:

Shop A 4 batteries cost = £1.60

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Lower price

Computation:

Cost in shop A = £1.60 / 4

Cost in shop A = £0.4

Cost in shop B = £2.70 / 6

Cost in shop B = £0.45

Cost in shop A is lesser.

5 0
2 years ago
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