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romanna [79]
2 years ago
13

1. Grace rode her bike 5 miles in 20 minutes. At this rate, how many miles can she ride her bike in 30 minutes? *

Mathematics
1 answer:
erastova [34]2 years ago
8 0

Answer:

14

Step-by-step explanation:

add the stuff together

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The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what
harkovskaia [24]

Answer:

78.88%

Step-by-step explanation:

We have been given that

\mu=25,\sigma=4,x_1=20,x_2=30

The z-score formula is given by

z-\text{score}=\frac{x-\mu}{\sigma}

For x_1=20

z_1=\frac{20-25}{4}\\\\z_1=-1.25

For x_2=30

z_2=\frac{30-25}{4}\\\\z_2=1.25

Now, we find the corresponding probability from the standard z score table.

For the z score -1.25, we have the probability 0.1056

For the z score 1.25, we have the probability 0.8944

Therefore, the percent of the trees that are between 20 and 30 years old is given by

0.8944 - 0.1056

= 0.7888

=78.88%

6 0
3 years ago
Read 2 more answers
4 • (6 – 4) 2 ÷ 2
Dmitry_Shevchenko [17]

Answer:

Cary is wrong

Step-by-step explanation:

4* (6-4)= 4* 2=8

I think it is saying (8*2) divided by to, which in that case is 8,

but if it is asking 8 (2/2) then that would also be 8 I believe. I really hope this is correct and you have a great day :)

5 0
3 years ago
Read 2 more answers
Estimate each product.solve to check your estimate.40×6
Fed [463]
Well 40 times 6 is 240 which means that you don't have to round.
8 0
3 years ago
Read 2 more answers
PLEASE HELP! ASAP! thanks!
WINSTONCH [101]
Domain from 1 to 6
Range from 1 to 4
3 0
3 years ago
HELP ME PLSSS ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Jobisdone [24]

Answer:

The question confused me a bit because of the different numbers.

The answer would be

w(2 * 18), which would be the same as choice a if the numbers weren't different.

Step-by-step explanation:


7 0
3 years ago
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