3 years ago

Travis reads 21/4 pages of his history assignment in 7 1/2

Mathematics

2 answers:

Bingel [31]3 years ago

5 0

Answer:

B and D

Step-by-step explanation:

Zigmanuir [339]3 years ago

3 0

Answer:

its B and E i just did the question and got it right

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Consider a bell-shaped symmetric distribution with mean of 16 and standard deviation of 1.5. Approximately what percentage of da

fredd [130]

Answer: 95.45 %

Step-by-step explanation:

Given : The distribution is bell shaped , then the distribution must be normal distribution.

Mean : $\mu=\ 16$

Standard deviation : $\sigma= 1.5$

The formula to calculate the z-score :-

$z=\dfrac{x-\mu}{\sigma}$

For x = 13

$z=\dfrac{13-16}{1.5}=-2$

For x = 19

$z=\dfrac{19-16}{1.5}=2$

The p-value = $P(-2$

$0.9772498-0.0227501=0.9544997\approx0.9545$

In percent, $0.9545\times100=95.45\%$

Hence, the percentage of data lie between 13 and 19 = 95.45 %

6 0

3 years ago

Pls answer 13 b ill mark u brainlist

gladu [14]

Answer:

7 students

Step-by-step explanation:

1+2+4=7students

5 0

3 years ago

Salina's age is one-quarter the age of her aunt. If a represents her aunt's age, which expression represents Salina's

alukav5142 [94]

Answer:

D. A over 4

Step-by-step explanation:

One quarter is equal to $\frac{1}{4}$ . If her aunt is age 'a', than Salina's age is a/4

Hope this helps.

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3 years ago

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the average speed of a race car is 240 km/h. if the race is 200 laps long with each lap being 4.02 km, how long will the race la

shtirl [24]

Each lap = 4.02 km
200 laps x 4.02 = 804 km total

804 km / 240 km/h = 3.35 hours = 3 hours and 21 minutes

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3 years ago

In the standard (x, y) coordinate plane, if the x-coordinate of each point is 2 times the y-coordinate, what is the slope of the

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1/2 (Rise over Run)
I hope this helps out :3

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3 years ago