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Anna007 [38]
3 years ago
6

A boat traveled 189 miles downstream and back. The downstream trip took 7 hours. The trip back took 21 hours. Find the speed of

the boat in still water and the current.
Mathematics
1 answer:
SSSSS [86.1K]3 years ago
5 0
 7hrs/ =x
21hrs 189
1323=7x
7       7
189=x
the speed of the boat in still water is 189
i got the answer by setting a proportion.
hope it work
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The answer is 65. i hope i helped
snow_tiger [21]
The equation can be:5*13=65
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Yoshi made a scale drawing of his yard. The scale drawing is 1 centimeter = 0.5 meter. The length of the patio is 4.5 centimeter
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What is the probability that a fair die never comes up an even number when it is rolled six times? (note: enter the value of pro
seropon [69]
Let us compute first the probability of ending up an odd number when rolling a dice. A dice has faces with numbers 1 up to 6. The odd numbers within that is 3 (1, 3 and 5). Therefore, each dice has a probability of 3/6 or 1/2. Then, you use the repeated trials formula:

Probability = n!/r!(n-r)! * p^r * q^(n-r), where n is the number of tries (n=6), r is the number tries where you get an even number (r=0), p is the probability of having an even face and q is the probability of having an odd face.

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6 0
3 years ago
Graph the line that passes through the points ( 0 , − 4) and (−5,2) and determine the equation of the line.
Eduardwww [97]
  1. Answer:

i am highly sorry but there is no graph for me to help you with on this site :(

but to help you the X line always comes first for example the (-5,2) the -5 would be on the X line. I really hope that this help. :)

7 0
3 years ago
Please help!! 20 POINTS
rjkz [21]

f(-3) would be 36.

When looking at synthetic division, the numbers across the top represent the coefficients of x^2, x and the constant in that order. Therefore, the equation is as follows.

2x^2 - 5x + 3

Now we can put -3 into the equation and solve.

2(-3)^2 - 5(-3) + 3

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18 + 15 + 3

36

7 0
3 years ago
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