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snow_lady [41]
3 years ago
8

To convert 2.5 hours into minutes, which ratio could you multiply by? Remember that 1 hour = 60 minutes.

Mathematics
1 answer:
EastWind [94]3 years ago
8 0
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What is a point on a line and all points of the line to one side of it called?
ladessa [460]

Answer:

  you have described a "ray"

Step-by-step explanation:

A "ray" is a half-line: all the points on a line that are to one side of its terminal point. (The terminal point is included in the ray.)

3 0
2 years ago
Look at image below/above
Jlenok [28]

Answer:

127°

Step-by-step explanation:

RQN and MNQ are the same

3 0
2 years ago
Read 2 more answers
Which pairs of rational numbers are equivalent? Select all that apply.
Airida [17]

Answer:

-0.5 and negative one-half

-1/50 and -0.02

Step-by-step explanation:

-0.5 can be rewritten as -5/10. This can be simplified to -1/2 which is the same as negative one-half.

7/10 isn't equivalent to 11/20. If you multiply 7/10 by 2/2 to get the denominator of 20, it will become 14/20 not 11/20.

-1/50 in decimal form is -0.02 so -1/50 and -0.02  are equivalent.

0.15 and 1/5 aren't equivalent because 1/5 in decimal form is is 0.2, not 0.15.

4 0
3 years ago
Read 2 more answers
A random sample of n D 225 and xN D 21 was drawn from a normal population with a known
Rainbow [258]

Using the z-distribution, the 95% confidence interval of the population mean is: (17.5, 24.5).

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm z\frac{\sigma}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • z is the critical value.
  • n is the sample size.
  • \sigma is the standard deviation for the population.

In this problem, we have a 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

For this problem, the other parameters are:

\overline{x} = 21, \sigma = 26.8, n = 225

Hence the bounds of the interval are:

\overline{x} - z\frac{\sigma}{\sqrt{n}} = 21 - 1.96\frac{26.8}{\sqrt{225}} = 17.5

\overline{x} + z\frac{\sigma}{\sqrt{n}} = 21 + 1.96\frac{26.8}{\sqrt{225}} = 24.5

The interval is: (17.5, 24.5).

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

6 0
2 years ago
Subtract (2x3 + 9x - 8) - (4x2 - 15x + 7).
maxonik [38]
2x3 + 24x - 4x2 - 15
4 0
3 years ago
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