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Marina CMI [18]
2 years ago
9

Charolette reads 13 pages of a book in 1/4 hours. How many pages can she read in one hour?

Mathematics
1 answer:
irinina [24]2 years ago
7 0

Answer:

52 pages

Step-by-step explanation:

1/4 x 4= 1

13 x 4=52

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What was discovered because of the changing phases of the moon? Please Help!!! Will Give Lots Of Points!
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Answer:

Firstly, the moon keeps changing its shape with 4 distinct moon phases that depend on the position of the moon and also on the position of the Earth. The moon orbits around the planet Earth, and the Earth orbits around the Sun.

Step-by-step explanation:

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URGENT 23-28 with work
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Write the expression<br> a2b3c2d in expanded<br> form.
Zanzabum

Answer:

a*2+b*2+c*2+d

Step-by-step explanation:

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Given a polynomial f(x), if (x + 7) is a factor, what else must be true? f(0)=7 f(0)=-7 f(7)=0 f(-7)=0
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Read 2 more answers
Express the following vector in the form v=v1i+v2j+v3k. 3u - v if u=(4,7,-3) and v=(2,-7,5).3u - v = ____ i + ____ j + _____ k.(
Alecsey [184]

Answer:

<h2><em>5i+14j-7k</em></h2>

Step-by-step explanation:

Given the vectors u = (4,7,-3) and v=(2,-7,5), both vectors are 3-dimensional in nature and can also be rewritten as;

u = 4i+7j-3k and v = 2i-7j+5k

To get 3u-v, we will substitute the given vectors into the expression;

3u-v = 3(4i+7j-3k) -  (2i-7j+5k)

open the parenthesis

3u-v = 12i+21j-9k - 2i + 7j - 5k

collect like terms

3u-v = (12i - 2i) + (21j + 7j) (-9k-5k)

3u - v = 10i+28j-14k

To simplify the answer, we will divide through by 2

3u - v = 10i/2+28j/2-14k/2

<em>3u - v = 5i+14j-7k</em>

<em>Hence the simplified form of the expression is 5i+14j-7k</em>

3 0
2 years ago
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