3 years ago

A certain ore contains 9 percent gold. How much ore (in tons) is needed to obtain 126 tons of gold

Mathematics

1 answer:

Stella [2.4K]3 years ago

7 0

Answer:

it'll take 251,991 tons of ore to obtain 126 tons of gold.. That's a lot

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Sorry i have another question what is the inequality of 8x−8≤−72.

vova2212 [387]

That answer is x≤−8

Inequality:

8x−8≤−72

Step number 1: You have to Add 8 to both sides.

8x−8+8≤−72+8

8x≤−64

Step number 2: You have to Divide both sides by 8.

8x /8 ≤ −64 / 8

Ur Answer:

x≤−8

Hope this helps :)

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4 years ago

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lisabon 2012 [21]

Answer:

Step-by-step explanation:

Comment

The angle supplementary to x and 3x are equal.

Supplementary angles = 180

Solution

x + 3x = 180

4x = 180 Divide by 4

4x/4 = 180/4

x = 45

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3x = 3*45

3x = 135

This angle is vertically opposite y. Vertically opposite angles are equal. So y = 135

Answer

x = 45

y = 135

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You factor the expression first leaving you with $\frac{3xy(z-1)}{3xy}$
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Answer:

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Step-by-step explanation:

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