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rodikova [14]
4 years ago
10

Grace rides her bike 5 miles in 1/2 hours. what is her average in a miles per hour?

Mathematics
1 answer:
jeka944 years ago
7 0
Grace is riding her bike at 10 mph
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Please help me out with my homework! This is super urgent! It's due in 18 minutes! Baranga lives in the city of Delmarville, Nor
Fofino [41]

Answer:

26 miles every hour

Step-by-step explanation:

she drove 572 miles for 22 hours

???????                      for 1 hour

572/22= 26 miles per hour

6 0
4 years ago
Read 2 more answers
brandon reads 55 pages of a book and has 210 pages left which equation can he use to find p the total number of pages in the boo
aliina [53]

Answer:

Hi!

Since we don't know the total number of pages, we'll call that x.

So your equation is

x = 210 - 55

Hope this helps!


~courtney


5 0
4 years ago
g You flip the coin 200 times and observed 80 Heads. Recall from the problem Hypothesis Testing: A Sample Data Set of Coin Flips
Mrrafil [7]

Answer:

Step-by-step explanation:

To be able to draw a conclusion from the data given, lets find out the p value using the t score and this will be used to make a conclusion.

If the p value is less than 0.05 then, we will reject the null but if otherwise we will fail to reject the null.

Using a p value calculator with a t score of 2.83, significance level 0.05 and the test is a two tailed test, the p value is 0.004655 which is less than 0.05 and the result is significant.

This we will reject the null hypothesis H0:p∗=1/2 for this data set.

8 0
4 years ago
A bag contains 26 tiles with letters A through Z. Find the probability of drawing three vowels with replacement. Find the probab
larisa86 [58]

Answer:

0.0071 & 0.004

Step-by-step explanation:

Total number of vowels 'V'=5

total number of alphabets= 26

therefore, P(V)=5/26

P(3 V's with replacement)= (5/26)³

                                             =0.0071

P(3 V's without replacement)=(5/26)(4/25)(3/23)

                                              =0.004

The first event is independent

The second event is dependent

6 0
3 years ago
14. Let R^2 have inner product defined by ((x1,x2), (y,, y2)) 4x1y1 +9x2y2 A. Determine the norm of (-1,2) in this space B. Dete
Vitek1552 [10]

The norm of a vector \vec x is equal to the square root of the inner product of \vec x with itself.

a. \|(-1,2)\|=\sqrt{\langle(-1,2),(-1,2)\rangle}=\sqrt{4(-1)^2+9(2)^2}=\sqrt{40}=2\sqrt{10}

b. \|(3,2)\|=\sqrt{\langle(3,2),(3,2)\rangle}=\sqrt{4(3)^2+9(2)^2}=\sqrt{72}=6\sqrt2

7 0
4 years ago
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