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3 years ago

I need step by step explanation for this problem :) Thank you >3

Mathematics

2 answers:

IrinaVladis [17]3 years ago

7 0

Step-by-step explanation:

Since Bridget rows 1 hour 4 kilometers upstream and 30 minutes (half of one hour) kilometers, downstream, then we have to find the average speed of both times. First, let's find how long Bridget would have to row upstream every kilometer.

Step 1:

60 minutes ÷ 4 kilometers = 15 minutes per kilometer (upstream)

30 minutes ÷ 4 kilometers = 7.5 minutes per kilometer (downstream)

Step 2:

Now, we find the average of 15 and 7.5. To do that, we add the values together and divide them by the number of values there are (2).

15 + 7.5 = 22.5

22.5 ÷ 2 = 11.25

Answer: Bridget takes 11.25 minutes to row 1 kilometer in still water.

mestny [16]3 years ago

3 0

Answer: Bridget rows at an average of 6 km per hour. The speed of the current is 2 km per hour.

Step-by-step explanation: Given the distance of 4 km and the two times, 1 hr and 1/2 hr, we can figure the speeds to be 4k/h and 8k/h. The average is 6k/h. The difference between her average and the actual speeds recorded is 2k/h against hr going upstream and with her going downstream.

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In a sale there is 25% off all prices a bed costs £33 how much was it before the sale ?

Troyanec [42]

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3 years ago

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weeeeeb [17]

Answer:

$\tt2.375$

Step-by-step explanation:

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3 years ago

What is an equation of the line that passes through the points (-8, 1) and(7,1)?

likoan [24]

Answer:

y=1

Step-by-step explanation:

you can use those points to find the slope

use the equation $\frac{y_{1} - y_{2}}{x_{1}-x_{2}}$ then plug in the numbers

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3 years ago

Read 2 more answers

What is 5 2/7 as a decimal

choli [55]

Answer:5.285

Step-by-step explanation:

2/7 is equal is .285 If you add .285 to your whole number which is 5 it would equal to 5.285

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3 years ago

What is the equation of a line that is parallel to −x+3y=6 and passes through the point (3, 5) ?

oksian1 [2.3K]

3y=6+x
y=(6+x)/3
y=2+x/3
y=mx+b
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3 years ago