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harkovskaia [24]
3 years ago
6

An experienced carpenter could build a house in 5 days. How much would he have finished if he worked for 3 days?

Mathematics
2 answers:
a_sh-v [17]3 years ago
5 0
he would have 8 this is the answer
kodGreya [7K]3 years ago
4 0
I think it would most likely be  3/5
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A flying carpet flies 2.4 miles with the wind in the same amount of time it flies 1.4 miles against the wind. The wind speed is
Ainat [17]

Answer:

15.2~mph

Step-by-step explanation:

Let the time flown by the flying carpet be t. Then, we have that (2.4)/t=(1.4)/t+2*4.

We multiply both sides of the equation by t to get 2.4=1.4+8t.

We subtract 1.4 from both sides to get 1=8t.

We divide both sides of the equation by t=1/8.

We know that the speed of the flying carpet in still wind is the average of the rates of the speed of the flying carpet with the wind and against the wind.

The speed with wind is (2.4)/(1/8)=19.2mph.

The speed against wind is (1.4)/(1/8)=11.2mph.

The speed in still wind is (19.2+11.2)/2=(30.4)/2=15.2.

Therefore, the answer is \boxed{15.2~mph} and we're done!

4 0
3 years ago
What does control for eximerment mean<br><br> .
docker41 [41]

Answer:

The definition of a control experiment is a test where the person conducting the test only changes one variable at a time in order to isolate the results. An experiment where all subjects involved in the experiment are treated exactly the same except for one deviation is an example of a control experiment.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
If EG and HJ are parallel lines and m
Anna35 [415]

Answer:

m JIK = 122°

Step-by-step explanation:

HERE, L || M

So, m JIK = m GFI

( since they are corresponding angles pair )

so, m JIK = 122°

3 0
3 years ago
The number $f$ of miles a ship is from its destination $x$ hours after starting a voyage is given by $f\left(x\right)=420-30x.$
k0ka [10]
Your answer should be 12.56
7 0
3 years ago
Jackie surveyed the first 20 students in the lunch line.
Yanka [14]

Answer:

Yes

Step-by-step explanation:

It is a random sample of students because they are just random people that Jackie is asking, its not only people in on grade, or only people on the basketball team.

5 0
2 years ago
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