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stiv31 [10]
3 years ago
14

In a certain chemical the ratio of zinc to copper is 4 to 15. A jar of the chemical contains 345 of copper how many grams of zin

c does it contain ?
Mathematics
1 answer:
vekshin13 years ago
7 0

Answer:

92.

Step-by-step explanation:

By proportion the mass of zinc = (345/ 15) * 4

= 92.

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A mathematics book has 360 pages, of which 50% are on algebra, 20% on geometry and the remainder on arithmetic how many pages ar
Arte-miy333 [17]

Answer:

30% of the pages are arithmetic, or 108 pages

Step-by-step explanation:

50% are on algebra = 180 pages

360 x .5 = 180

20% are on geometry = 72 pages

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180 + 72 + 108 = 360 pages

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6 0
3 years ago
Please help me!! i know u saw this so help me
storchak [24]

Answer:

I think 8

Step-by-step explanation:

9/2 and 5/8

here 8 is the LCM.

so, 9/2 × 4/4

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which gives: 36/8 and 5/8

7 0
3 years ago
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Mkey [24]

Answer:

option . B

Step-by-step explanation:

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8 0
3 years ago
5/8 divided by 7/10 for the lowest fraction
o-na [289]

Answer:

5/8 ÷ 7/10 = 25/28

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On a certain function machine, an input of 3 has an output of -6. An input of -2 has an output of 4. An input of 0 has an output
horrorfan [7]
Input of 3.....output of -6.......(3 * -2 = -6)
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input of 0....output of 0.........(0 * -2 = 0)

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6 0
4 years ago
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