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SSSSS [86.1K]
2 years ago
11

choose a number from 10 to 90. draw and write to show the numbers that are 10 less and 10 more than your number

Mathematics
2 answers:
finlep [7]2 years ago
8 0
50:
40 is 10 less than 50
60 is 10 more than 50
nataly862011 [7]2 years ago
3 0
I chose 13

less: 3. 4. 5. 6. 7. 8. 9. 10. 11. 12
more: 14. 15. 16. 17. 18. 19. 20. 21. 22. 23

Hope this helps!
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The graph shows the number of hours driven and the number of miles traveled.
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x is 4 when y is 180

y is 540 when x is 12

Step-by-step explanation:

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3 years ago
Read 2 more answers
A county is considering rasing the speed limit on a road because they claim that the mean speed of vehicles is greater than 30 m
DochEvi [55]

Answer:

No, at alpha equals 0.10​, we do not have enough evidence to support the​ county's claim.

Step-by-step explanation:

We are given that a county is considering raising the speed limit on a road because they claim that the mean speed of vehicles is greater than 30 miles per hour.

A random sample of 15 vehicles has a mean speed of 31 miles per hour and a standard deviation of 4.7 miles per hour.

<em><u>Let </u></em>\mu<em><u> = true mean speed of the vehicles.</u></em>

SO, <u>Null Hypothesis</u>, H_0 : \mu \leq  30 miles per hour   {means that the mean speed of vehicles is lesser than or equal to 30 miles per hour}

<u>Alternate Hypothesis,</u> H_A : \mu > 30 miles per hour   {means that the mean speed of vehicles is greater than 30 miles per hour}

The test statistics that will be used here is <u>One-sample t test statistics</u> as we don't know about the population standard deviation;

                        T.S.  = \frac{\bar X -\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean speed of 15 vehicles = 31 mph

             s = sample standard deviation = 4.7 mph

             n = sample of vehicles = 15

So, <em><u>test statistics</u></em>  =   \frac{31-30}{\frac{4.7}{\sqrt{15} } }  ~ t_1_4

                               =  0.824

<u><em>Hence, the value of test statistics is 0.824.</em></u>

<em />

<em>Now at 0.10 significance level, the t table gives critical value of 1.345 at 14 degree of freedom for right-tailed test. Since our test statistics is less than the critical value of t as 0.824 < 1.345, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region.</em>

<em />

Therefore, we conclude that the mean speed of vehicles is lesser than or equal to 30 miles per hour which means that the county's claim is not supported.

4 0
3 years ago
Math help ✄✐
brilliants [131]

D) as age increases, weight increases by 5

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3 years ago
The diagram shows a triangle 60° 11y 4y What is the value of y? y =​
Vedmedyk [2.9K]

Answer:

y = 8

Step-by-step explanation:

11y + 4y + 60 = 180

11y + 4y = 120

15y = 120

y = 8

4 0
3 years ago
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