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coldgirl [10]
3 years ago
5

Need some help on this

Mathematics
1 answer:
Law Incorporation [45]3 years ago
4 0

9514 1404 393

Answer:

  a. set 1: 29 minutes; set 2: 25 minutes

  b. set 1 is more challenging than set 2

Step-by-step explanation:

a. The mean is found by adding the times and dividing by the number of times. For set 1, that is ...

  (2×27 +2×28 +3×29 +2×30 +33)/10 = 290/10 = 29 . . . minutes

For set 2, that is ...

  (4x24 +4×25 +2×27)/10 = 250/10 = 25 . . . minutes

__

b. The mean of set 1 is higher, and the spread is wider, suggesting more students have more trouble with the problems of set 1. That is, ...

  set 1 is more challenging than set 2

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Mike ran 1 mile in 4 minutes. How far did he run in 10seconds?
MrRissso [65]

Answer:

0.015 miles

Step-by-step explanation:

1mile = 4min \\ 1mile = 240sec \\ 0.609km = 240sec \\  \frac{0.609}{24}  =  \frac{240}{24}  \\ 10sec = 0.025km \\ 10sec = 0.015miles

3 0
3 years ago
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Hoochie [10]
To factor this fraction, you have be be aware of two special factoring formula:
a^3<span> + </span>b^3<span> = (</span>a<span> + </span>b)(a^2<span> – </span>ab<span> + </span>b^2<span>)

</span><span>(a+b)³ = a³ + 3a²b + 3ab² + b³

You can see the top part in this case is (x+y)^3, and the bottom (denominator) can be factor into (x+y)(x^2-xy+y^2)
we can cancel (x+y), so what we have left is (x+y)^2/(x^2-xy+y^2)
or (x^2+2xy+y^2)/(x^2-xy+y^2)
</span>
7 0
3 years ago
I have 24 golf clubs. i have 3 bags. how many clubs do i have in each bag.
NeX [460]

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24/3 = 8

6 0
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180x feet^3

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