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3 years ago

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A metalworker has a metal alloy that is 20% copper and another alloy that is 75% copper. How many kilograms of each alloy shou

ld the metalworker combine to create 80 kg of a 53% copper alloy?

1 answer:

Molodets [167]3 years ago

4 0

That's the answer to your question

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Monica [59]

Answer:

D

Step-by-step explanation:

the answer is D: Both 3 and 4

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3 years ago

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The local coffee shop offers a 10 percent discount to senior citizens on a cup of coffee and a donut. If the regular price is $2

LenKa [72]

2.95 * 10%=
2.95 * .1 =
.295
Subtract .295 from 2.95
2.95 - .295 = 2.655
$ 2.66

8 0

3 years ago

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What is a ratio equivalent to 3:2? (not 6:1)

Akimi4 [234]

Answer:

9:6, 12:8, and 15:10 are all ratios equivalent to 3:2

Step-by-step explanation:

To find an equal ratio, you can either multiply or divide each term in the ratio by the same number (but not zero).

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3 years ago

(-4, 8) is dilated with the center of dilation at the origin, the image of the point is (-18, 36). What is the scale factor of t

maxonik [38]

Taking the same test right now....I think the answer is 4.5. Hope that helps!

4 0

3 years ago

What is the slope of (-18,-20),(-18, -15)

Rzqust [24]

Answer:

Undefined.

Step-by-step explanation:

$m = \frac{rise}{run}$

$m = \frac{ - 15 - ( - 20)}{ - 18 - ( - 18)} \\ m = \frac{ - 15 + 20}{ - 18 + 18} \\ m = \frac{5}{0}$

The denominator is 0. Therefore, the slope is undefined.

4 0

3 years ago