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lapo4ka [179]
3 years ago
11

5x-16y=272 y=(64-7x)/4

Mathematics
1 answer:
exis [7]3 years ago
4 0

Answer:

x=16, y=-12. (16, -12).

Step-by-step explanation:

5x-16y=272

y=(64-7x)/4

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

4y=64-7x

4y+7x=64

5x-16y=272

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

4(4y+7x)=4(64)

5x-16y=272

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

16y+28x=256

5x-16y=272

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

33x=528

x=528/33

x=16

5(16)-16y=272

80-16y=272

16y=80-272

16y=-192

y=-192/16

y=-12

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Jaya has 26 hockey cards. Jaya has 1 fewer than 3 times the number her brother, Kumar, has. How many cards does Kumar have?
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3 years ago
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Isolate for x, y = mx + b
zavuch27 [327]

Answer:

x = (y - b)/m

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

First subtract b from both sides:

y = mx + b

y (-b) = mx + b (-b)

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Next, divide m from both sides:

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3 years ago
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A college student earned $7000 during summer vacation working as a waiter in a popular restaurant. The student invested part of
Lemur [1.5K]
<span>.09X+.08(7,000-X)=588
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4 years ago
What is the x-intercept of the line described by the equation?
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Answer:

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