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dem82 [27]
3 years ago
11

If Charles rides 4 miles in 20 minutes on his bike, which ratio shows the number of miles per minute he can ride

Mathematics
1 answer:
Sonbull [250]3 years ago
6 0
I believe I would be c but I could be wrong
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Point m represents the opposite of negative 1/2 and point n represents the opposite of positive 5/2 which number line correctly
Ira Lisetskai [31]

Answer:

The graph in the attached figure

Step-by-step explanation:

we know that

point m represents the opposite of negative 1/2

so

m=+\frac{1}{2}=0.5

point n represents the opposite of positive 5/2

so

n=-\frac{5}{2}=-2.5

using a graphing tool

see the attached figure

3 0
4 years ago
Find the equation of the line that is perpendicular to y=-2x+1 and contains the point (8, 2).
AleksAgata [21]

Answer:

y = 1/2x - 2

Step-by-step explanation:

In order for a line to be perpendicular to another, the lines must have opposite reciprocal slopes.

Example of an opposite reciprocal slope: -2 ⇒ 1/2

Insert the information into the point-slope formula:

y-y_1=m(x-x_1)\\\\y-2=\frac{1}{2}(x-8)\\\\y-2=\frac{1}{2}x-4\\\\y=\frac{1}{2}x-2

4 0
3 years ago
he American Heart Association is about to conduct an anti-smoking campaign and wants to know the fraction of Americans over 45 w
Sonja [21]

Answer:

The 85% confidence interval is (0.2187, 0.2613).

Step-by-step explanation:

We have a large sample of size n = 830 Americans over 45. We have observed that 631 people don't smoke. Let p be the population proportion of Americans over 45 who smoke. An point estimate of p is \hat{p} = 199/830 = 0.24 and an estimate of the standard deviation of \hat{p} is \sqrt{\hat{p}(1-\hat{p})/n} = \sqrt{(0.24)(0.76)/830} = 0.0148. Therefore, because we have a large sample, the 85% confidence interval for the population proportion is given by \hat{p}\pm z_{\alpha/2}\sqrt{\hat{p}(1-\hat{p})/n} = 0.24\pm z_{0.15/2}0.0148 = 0.24\pm z_{0.075}0.0148 where z_{0.075} is the 7.5th quantile of the standard normal distribution, i.e., -1.4395. Therefore the 85% confidence interval is 0.24\pm (1.4395)(0.0148) or equivalently (0.2187, 0.2613).

7 0
3 years ago
Required
Ludmilka [50]

Step-by-step explanation:

<em>option</em><em> </em><em>c </em><em>is </em><em>correct</em><em> </em><em>not </em><em>enough</em><em> </em><em>of </em><em>information</em>

<em>as </em><em>to </em><em>calculate</em><em> </em><em>what </em><em>was </em><em>his </em><em>change </em><em>we </em><em>have </em><em>to </em><em>calculate</em><em> </em><em>the </em><em>sum </em><em>of </em><em>cost </em><em>of </em><em>each </em><em>material</em><em> </em><em>he </em><em>bought</em><em>,</em><em> </em><em>and </em><em>cost </em><em>of </em><em>six </em><em>pack </em><em>of </em><em>diet </em><em>mountain</em><em> </em><em>dew </em><em>are </em><em>missing,</em><em> </em><em>therefore</em><em> </em><em>option</em><em> </em><em>c </em><em>is </em><em>correct.</em>

<em><u>hope </u></em><em><u>this </u></em><em><u>answer </u></em><em><u>helps</u></em><em><u> you</u></em><em><u> </u></em><em><u>dear.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>take </u></em><em><u>care </u></em><em><u>and</u></em><em><u> may</u></em><em><u> u</u></em><em><u> have</u></em><em><u> a</u></em><em><u> great</u></em><em><u> day</u></em><em><u> ahead</u></em><em><u>!</u></em>

4 0
3 years ago
To make 16 hamburger patties that each weigh 1/3 pound, you need 16/3 pounds of beef. Write 16/3 as a mixed number.
Tanzania [10]

Answer:

5 1/3

Step-by-step explanation:

fraction=division

16÷3= 5 R1

5 r1= 5 1/3

I hope this helps you learn how to change improper fractions to mixed numbers!

3 0
4 years ago
Read 2 more answers
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