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Sergeeva-Olga [200]
3 years ago
12

Solve for m 5m - 10m = 20can anyone help me out?​

Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
8 0

Answer:

m=-4

Step-by-step explanation:

5m-10m=-10m+5m=-(10m-5m)=-5m=20

divide by 5 on both sides, -m=4

miltiply by -1 on both sides, m=-4

Bingel [31]3 years ago
7 0

Answer:

m = - 4

Step-by-step explanation:

Given

5m - 10m = 20 ← simplify left side by combining terms

- 5m = 20 ( divide both sides by - 5 )

m = - 4

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3 years ago
Two new drugs are to be tested using a group of 60 laboratory mice, each tagged with a number for identification purposes. Drug
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Answer:

The total number of ways of assignment is 314,790,828,599,338,321,972,833,000.

Step-by-step explanation:

In mathematics, the procedure to select <em>k</em> items from <em>n</em> distinct items, without replacement, is known as combinations.

The formula to compute the combinations of <em>k</em> items from <em>n</em> is given by the formula:

{n\choose k}=\frac{n!}{k!(n-k)!}

In this case we need to determine the number of ways in which the drugs are assigned to each mouse.

It is provided that new drugs are to be tested using a group of 60 laboratory mice, each tagged with a number for identification purposes.

Drug A is to be given to 22 mice.

Compute the number of ways to assign drug A to 22 mice as follows:

{60\choose 22}=\frac{60!}{22!(60-22)!}\\\\=\frac{60!}{22!\times 38!}\\\\=14154280149473100

Now the remaining number if mice are: 60 - 22 = 38.

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{38\choose 22}=\frac{38!}{38!(38-22)!}\\\\=\frac{38!}{22!\times 16!}\\\\=22239974430

Now the remaining number if mice are: 38 - 22 = 16.

Compute the number of ways to assign no drug to 16 mice as follows:

{16\choose 16}=\frac{16!}{16!(16-16)!}\\\\=1

The total number of ways of assignment is:

N = {60\choose 22}\times {38\choose 22}\times {16\choose 16}\\\\=14154280149473100\times 22239974430\times 1\\\\=314,790,828,599,338,321,972,833,000

Thus, the total number of ways of assignment is 314,790,828,599,338,321,972,833,000.

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3 years ago
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8 0
3 years ago
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