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Lorico [155]
3 years ago
5

If Tom can swim 10 laps in 32 minutes. What would his expected time for 15 laps?

Mathematics
1 answer:
Shkiper50 [21]3 years ago
7 0

Answer:

If he could keep the same rate for the last 5 laps, he would finish in 48 minutes.

Step-by-step explanation:

In order to find this, create a proportion. The left side would be the pace that he set. The right side would be the expectation.

10/32 = 15/x

Now cross multiply to solve.

10*x = 15*32

10x = 480

x = 48

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Its pretty easy if you are good at math! Please help!
aleksley [76]

Step-by-step explanation:

Explanation:

The trick is to know about the basic idea of sequences and series and also knowing how i cycles.

The powers of i will result in either: i, −1, −i, or 1.

We can regroup i+i2+i3+⋯+i258+i259 into these categories.

We know that i=i5=i9 and so on. The same goes for the other powers of i.

So:

i+i2+i3+⋯+i258+i259

=(i+i5+⋯+i257)+(i2+i6+⋯+i258)+(i3+i7+⋯+i259)+(i4+i8+⋯+i256)

We know that within each of these groups, every term is the same, so we are just counting how much of these are repeating.

=65(i)+65(i2)+65(i3)+64(i4)

From here on out, it's pretty simple. You just evaluate the expression:

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i+i2+i3+⋯+i258+i259=-1

8 0
3 years ago
A quadrilateral has angles that measure 56°, 97°, and 136°.
kodGreya [7K]
Yes.....................
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3 0
3 years ago
Read 2 more answers
1) Find the mean of the following numbers: 5, 11, 8, 8, 7, 4, 10, 9, 7, 7, 6​
SashulF [63]
Mean = 5+11+8+8+7+4+10+9+7+7+6 divided by the number of observations which is 10

Therefore, mean = 73/10
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4 0
3 years ago
Cora has some ice cream that she is serving for her friend , if Cora gives1/6 of a quart of ice cream to earth of her 8 friends,
zalisa [80]

Answer:

\frac{4}{3} quarts of ice cream

Step-by-step explanation:

Given

Number of friends = 8

Size of ice cream = 1/6 quarts

Required

Total ice cream served

Let n represent the number of friends, s represent the size of ice cream and t represents total ice cream served;

t is calculated as thus;

t = n * s

t = 8 * \frac{1}{6} quarts

t = \frac{8}{6} quarts

Divide numerator and denominator by 2

t = \frac{4}{3} quarts

Hence, she serves \frac{4}{3} quarts in total

8 0
3 years ago
What is the median of the data?
eimsori [14]
<span>20, 19, 13, 23, 16, 15, 17, 17, 15, 15, 22, 19

</span>To find the Median, place the numbers in value order<span> and find the </span>middle<span>.
</span>
13, 15, 15, 15, 16, 17, 17, 19, 19, 20, 22, 23

There are 12 numbers and so we don't have just one middle number, we have a pair of middle numbers:


13, 15, 15, 15, 16, (17, 17), 19, 19, 20, 22, 23

<span>To find the value halfway between them, add them together and divide by 2:
</span>
17 + 17 = 34
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So the median is A) 17.

8 0
3 years ago
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