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Gekata [30.6K]
2 years ago
15

Can someone help me with math I need help I will attempt to give y’all help too!

Mathematics
1 answer:
natita [175]2 years ago
5 0

Answer:

Step-by-step explanation:

1 - V = (l(w)h)/3 = (14·9.5·15)/3 = 665ft^3
2 - 73.5ft^3 C
3 - (8·8·12)/3=256in^3

4 - (1.5·2·4)/3 = 4cm^3

5 - (12·6·9)/3=216in^3

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3 years ago
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Fiesta28 [93]

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<h2>A. (-4, -15)</h2>

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\left\{\begin{array}{ccc}y=\dfrac{3}{4}x-12&(1)\\y=-4x-31&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\\dfrac{3}{4}x-12=-4x-31\qquad\text{multiply both sides by 4}\\\\3x-48=-16x-124\qquad\text{add 48 to both sides}\\\\3x=-16x-76\qquad\text{add}\ 16x\ \text{to both sides}\\\\19x=-76\qquad\text{divide both sides by 19}\\\\x=-4\\\\\text{Put it to (2):}\\\\y=-4(-4)-31\\y=16-31\\y=-15

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