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ahrayia [7]
3 years ago
5

5y - 4x = -7 2y + 4z = 14 Solve for x and y

Mathematics
2 answers:
castortr0y [4]3 years ago
8 0

Answer:

et's solve for x.

5y−4x=−72y+4z

Step 1: Add -5y to both sides.

−4x+5y+−5y=−72y+4z+−5y

−4x=−77y+4z

Step 2: Divide both sides by -4.

−4x

−4

=

−77y+4z

−4

x=

77

4

y−z

Answer:

x=

77

4

y−z

Let's solve for y.

5y−4x=−72y+4z

Step 1: Add 72y to both sides.

−4x+5y+72y=−72y+4z+72y

−4x+77y=4z

Step 2: Add 4x to both sides.

−4x+77y+4x=4z+4x

77y=4x+4z

Step 3: Divide both sides by 77.

77y

77

=

4x+4z

77

y=

4

77

x+

4

77

z

Answer:

y=

4

77

x+

4

77

z

Step-by-step explanation:

I think that can help :) wanna chat add me as  friend

Marysya12 [62]3 years ago
3 0

Answer:

1.)x=5/4y+7/4

2.) y=−2z+7

Step-by-step explanation:

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Explanation:

Mass of boy = 40 kg

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Final potential energy = mgh

Taking g as 10 m/s²,

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So, work done = final potential energy - initial potential energy

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zaharov [31]

Answer:

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Step-by-step explanation:

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Base area B = 1/2 * 6 * 4

Base area B = 12 ft²

Height H = 4ft

Volume of the pyramid = 12 * 4

Volume of the pyramid = 48ft³

SInce 1 ft³ = $3

48ft³ = x

Cross multiply

x = 3 * 48

x = 144

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5 0
2 years ago
Of 50 students surveyed, 19 said they had soda for breakfast. write a portion in fraction, decimal, percent
Naya [18.7K]
Answers:
___________________________
In fraction:  \frac{19}{50} .
___________________________
In decimal:  0.38  .
_________________
In percent:  38 %  .
_________________
Explanation:
_________________
19/50 = (19*2)/(50*2) = 38/100 .

38/100 = 38 ÷ 100 = 0.38  .

38/100 = 38 % .
___________________________
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Answer:

Lisa collected 49 leaves (C.)

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3 years ago
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N/3>1
n>1*3
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2 years ago
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