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Tom [10]
1 year ago
15

10. An expression is shown.

Mathematics
1 answer:
dolphi86 [110]1 year ago
6 0

Answer: -0.25n-0.15

Step-by-step explanation:

simplify

0.5n+0.3-0.75n-0.45

Combine like terms

-0.25n-0.15

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What is [2times6]-7+92+45<br> divided by 5
Vesna [10]
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Hope that helps :)
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6 0
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Suppose the radius of a circle is 5. What is its area?
aalyn [17]
<span><span>A <span>= <span>π <span>r</span></span></span></span></span>² <span><span><span>= <span>π </span></span></span></span>×<span><span><span><span> <span>5</span></span></span></span></span>²<span><span><span><span><span> </span></span></span><span>≈ 78.53982 
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6 0
2 years ago
At a competition with 5 runners
ankoles [38]

Answer:

B: Permutation;  Number of ways = 60

Step-by-step explanation:

First we have to decide if this is a problem of permutation or combination. The rule is:

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In this problem, they order of awarding the medals matters, so this is a permutation problem.

We have to award 3 medals among 5 runners. So this can be done in 5P3 ways:

nPr=\frac{n!}{(n-r)!}\\ \\ so\\ \\ 5P3=\frac{5!}{(5-3)!}=60

Therefore, there are 60 ways to award the medal. Therefore, the correct answer is B.

5 0
3 years ago
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