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igor_vitrenko [27]

3 years ago

15

A coin contains 1.25, point grams of nickel and 3.75, point, grams of copper, for a total weight of 5 grams. What percentage of

the metal in the coin is copper?

1 answer:

jarptica [38.1K]3 years ago

8 0

3.75 grams of copper / 5 total grams =

.75 = 75%

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Mademuasel [1]

Answer:

42

Step-by-step explanation:

1/3 x 42 = 14

14 - 6 = 8

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Javier has a model of a cone with a radius of 3 inches and a height of 10 inches. Javier increased his model’s volume by doublin

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Answer:

$240 \pi\ in^{3}$

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z------> the scale factor

x-----> the volume of the larger cone

y-----> the volume of the original cone

$z^{3}=\frac{x}{y}$

In this problem we have

$z=2$ -----> scale factor

substitute

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substitute

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therefore

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2 years ago

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1) Venn-diagram of-<br> AUBUC={a,b,c,d,e}U{d,e,f,g,h,i}U{a,e,i,o,u}<br>

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I'm guessing the sum is supposed to be

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If $k=\frac15$ , then

$1=a(1+4)\implies a=\frac15$

This means

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and as $n\to\infty$ , the second term vanishes and leaves us with

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Answer:

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Step-by-step explanation:

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