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lawyer [7]
3 years ago
13

a boat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours. if b=the rate of the boat in still wate

r and c=the rate of the current, which of the following equations represents the trip upstream?
Mathematics
1 answer:
ASHA 777 [7]3 years ago
8 0

it would be equation c, since you are you going upstream and the current would be going down stream

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what is the area of a triangle if the base is 7 less than 5 times a number and the height is 3 times the number and eight
Flauer [41]
Area of a triangle is half multiplied by the height multiplied by the base.So multiplying the two together and halfing is shown below

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Find the lowest common denominator of and . A. x3y4 B. x2y3 C. xy4 D. x4y5
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5 0
3 years ago
What's are the correct answers? (For all)50 points + brainliest answer
allsm [11]
1. the last one
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6 0
3 years ago
Read 2 more answers
Which of the choices below is not a possible correlation coefficient?
fiasKO [112]

Answer:

The condition for r is the following:

-1 \leq r \leq 1

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

Step-by-step explanation:

The correlation coefficient is a measure of dispersion and is a value between -1 and 1, and is defined as:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}

The condition for r is the following:

-1 \leq r \leq 1

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

8 0
3 years ago
I hope this uploaded sorry still having a hard time with this one
Shkiper50 [21]
No problem 72 cubic squares
8 0
3 years ago
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