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spayn [35]
3 years ago
8

Which shows two possible values for a number represented by the point?

Mathematics
2 answers:
s2008m [1.1K]3 years ago
5 0

Answer:

B-2/4 and 1/2

Step-by-step explanation:

Ahat [919]3 years ago
5 0

Answer:

b

Step-by-step explanation:

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Lana finished the race in 13.2 seconds . If 84 other girls ran in the event, approximately how many runners did she beat?
BabaBlast [244]

Complete question :

The 100m dah times in the girl's track meet were normally distributed with a mean of 13 seconds and a standard deviation of 0.3 seconds.

Lana finished the race in 13.2 seconds . If 84 other girls ran in the event, approximately how many runners did she beat?

Answer:

21 runners

Step-by-step explanation:

Mean, μ = 13 seconds

Standard deviation, σ = 0.3

Lana's race time = 13.2

We find the proportion of runners who had race time above 13.2 ;

Proportion of who had race tune above 13.2

P(x > 13.2)

Obtain the Zscore

Zscore = (x - μ) / σ

Z = (13.2 - 13) / 0.3

Zscore = 0.2 / 0.3 = 0.6667

P(Z > 0.6667) = 0.25239 (Z probability calculator)

This is about 0.25239 * 100 = 25.24% = 25% (nearest percent)

Hence, Number of runners Lana beat = 25% of total runners ;

0.25 * 84 = 21

Hence, Lana beat about 21 runners

6 0
3 years ago
2/5(25y - 50) + 25y simplified
Vitek1552 [10]

Answer:

35y - 20

Step-by-step explanation:

here's the solution :-

=》

\frac{2}{5} (25y - 50) + 25y

=》

10y - 20 + 25y

=》

35y - 20

3 0
3 years ago
Read 2 more answers
What is the value of x?<br><br><br><br> Enter your answer in the box.
Drupady [299]

Answer:

x = 111

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Here n = 7 , then

sum = 180° × 5 = 900

Sum the interior angles and equate to 900

x + 139 + 121 + 125 + 126 + 158 + 120 = 900

x + 789 = 900 ( subtract 789 from both sides )

x = 111

5 0
3 years ago
The price of a shoes as reduced from 60 to 45. by what percentage was the price of the shoes reduced?
sweet-ann [11.9K]
45 is 75% of 60 but if you’re looking for the difference subtract 75 from 100, so 25%
8 0
3 years ago
5x = 1/125<br> What is X
Solnce55 [7]

Answer:

x= 1/25

Step-by-step explanation:

8 0
3 years ago
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