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Mariulka [41]
2 years ago
7

Find the value of x and y 2x+7y=4 -4x-3y=14

Mathematics
1 answer:
guapka [62]2 years ago
5 0

Answer:

x=-5 y=2

Step-by-step explanation:

1) multiplying equation 1 by 4 and multiplying equation 2 by 2 .

2)adding them we get value of y.

3) replacing value of y in either of given equation

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An article in the Journal of Aircraft described a new equivalent plate analysis method formulation that is capable of modeling a
mezya [45]

Answer:

Given:

n = 15

c = 95% = 0.95

Let us assume:

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→See attached for the table←

→See attached for the for the workings←

Result

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3 years ago
When a baseball is hit by a batter the height of the ball age of T at time TT equals zero is determined by the equation age of T
Luda [366]

Answer:

1 ≥ t ≤ 3

Step-by-step explanation:

Given

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This implies that

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Substitute -16t² + 64t + 4 for h(t)

-16t² + 64t + 4 ≥ 52

Collect like terms

-16t² + 64t + 4 - 52 ≥ 0

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Divide through by 16

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Multiply through by -1

t² - 4t + 3 ≤ 0

t² - 3t - t + 3 ≤ 0

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t - 1 ≤ 0 or t - 3 ≤ 0

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Rewrite as:

1 ≥ t or t ≤ 3

Combine inequality

1 ≥ t ≤ 3

5 0
2 years ago
Solve by completing the square.<br> X^2-2x-15=0 (help)
gladu [14]

Step-by-step explanation:

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8 0
3 years ago
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