A basketball player can make 25 free throws in 3.5 minutes. How

1 answer:

3 0

25/3.5=7.142

7.142x12= 85.714, or about 86 free throws(your answer)

First you need to divide the number of free throws by the number of minutes. That is the average amount of throws per minute. Then you would multiply the average by the amount of minutes given (12) to get the approximate number. Since you can’t throw a fraction of a free throw, you would round.

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help 112. if k is a positive integer, then for every value of k, the sum of the k smallest distinct odd positive integers is equ

Ksenya-84 [330]

Hello,

$\sum_{i=0}^{k-1}\ (2*i+1)=2*\sum_{i=0}^{k-1}\ i +\sum_{i=0}^{k-1}\ 1\\

= \dfrac{k*(k-1)}{2} +k=k^2-k+k=k^2$

In details:

s= 1    +3 +5+7+9+.... +2(k-2)+1 +2(k-1)+1
s= 2(k-1)+1 +2(k-2)+1 +.... +9+7+5 +3    +1
2s=(2k-2+2) +(2k-4+4)+...........................................+(2k-2+2)
   =2k+2k+2k+....+2k (there is k terms)

2s=2k*k
2s=2k²
s=k²

Answer J

7 0

3 years ago

Find the quotient: –10/19÷(−5/7)

Semmy [17]

Answer:

14/19

Step-by-step explanation:

Note that there are two " - " signs here. Thus, the end result will be " + "

We move from left to right, obtaining first 10/19 divided by (5/7):

----- ÷ (5/7)

To divide by (5/7), invert (5/7) and then multiply. We get:

10 7 2(7)