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Serhud [2]
3 years ago
6

Carlos can run 6 1/4 around a track in 10 minutes.

Mathematics
1 answer:
Olenka [21]3 years ago
5 0

Answer:

Ok so what is the question?

Step-by-step explanation:

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The lengths of the sides of a rectangular window have the ratio 1.2 to 1. The area of the window is 811.2 square inches. What ar
GrogVix [38]

Answer:

a. 26 inches by 31.2 inches

Step-by-step explanation:

The lengths(X) of the rectangular is 1.2 times longer than the width (Y), so you can put it into this equation

x= y * 1.2

x= 1.2 y

The area of the window is 811.2 square inches, so you can put this equation

x * y= 811.2

Combining both equations, you can get

x * y= 811.2

(1.2y) * y = 811.2

1.2y^2= 811.2

y^2= 676

y= 26

x= 1.2 y

x= 1.2(26)= 31.2

3 0
4 years ago
a set of average city temperatures in december are normally distributed with a mean of 16.3°C and a standard deviation of 2°C. w
koban [17]

Answer:

19.74% of temperatures are between 12.9°C and 14.9°C

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 16.3, \sigma = 2

What proportion of temperatures are between 12.9°C and 14.9°C?

This is the pvalue of Z when X = 14.9 subtracted by the pvalue of Z when X = 12.9.

X = 14.9

Z = \frac{X - \mu}{\sigma}

Z = \frac{14.9 - 16.3}{2}

Z = -0.7

Z = -0.7 has a pvalue of 0.2420

X = 12.9

Z = \frac{X - \mu}{\sigma}

Z = \frac{12.9 - 16.3}{2}

Z = -1.7

Z = -1.7 has a pvalue of 0.0446

0.2420 - 0.0446 = 0.1974

19.74% of temperatures are between 12.9°C and 14.9°C

3 0
3 years ago
Tell whether the lines for each pair of equations are parallel, perpendicular, or neither
nevsk [136]

Answer: this will help you with this qustion and others involving graphs desmos . com


Step-by-step explanation:


6 0
3 years ago
Which ordered pair is a solution to the system?
sweet-ann [11.9K]
Answer: C) (-3, -1)
X = -3 and y= -1

If you apply these values in the inequalities
y < 2x + 1
-3 < -2 + 1
-3 < -1
Since -3 is less than -1 , the values hold true for the first equation

y > -x-5
-3 > -1 - 5
-3 > -6
Since -3 is greater than -6, it also holds true for the 2nd equation
7 0
3 years ago
She could tell of the Crows, who she had never seen, and of the Black Hills, where she had never been. I wanted to see in realit
ANTONII [103]
I believe it is

<span>a sense of respect for Aho

because the main character wanted to be like "her", and you must have respect for somebody you want to be like

hope this helps</span>
4 0
3 years ago
Read 2 more answers
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