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Andrei [34K]
3 years ago
11

kaitlin is participating in a 5-day cross country biking challenge. She biked for 55,67,56,and 49 miles on the first four days.

How many miles does she need to bike on the last day so that her average (mean) is 55 miles per day?
Mathematics
1 answer:
SOVA2 [1]3 years ago
7 0
The mean of a set of values is the sum of the data divided by the number of entries. So in this case:

\frac{55+67+56+49+x}{5} =55

Solve for x:

55 + 67 + 56 + 49 + x = 5(55)

227 + x = 275

x = 48

The answer is 48 miles.
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zlopas [31]
2 times 10^4 means 2 with 4 zeroes after it or 20000
4 times 10^6=4 with 6 zeros after it or 400000

compare

20000 and 4000000
we can see that 4000000 is 200 times of 20000
therefor the answer is C

we can also do
(4 times 10^6)/(2 times 10^4)=4/2 times (10^6)/(10^4)=2 times 10^2=200


answer is C
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3 years ago
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KonstantinChe [14]

Answer:

(-2, -3)

Step-by-step explanation:

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vampirchik [111]
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mart [117]
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now, notice, the triangles have a base of 4 and an altitude/height of 1.5.

the rectangles on the left and right sides are just 2.5 x 6 each.

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Mekhanik [1.2K]

Answer:

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Step-by-step explanation:

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An equation of a vertical line: x = a  (a - real number).

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We have the point (4, 0) → x = 4

5 0
3 years ago
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