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melomori [17]
3 years ago
11

What is the answer to number 7 and 8

Mathematics
1 answer:
saveliy_v [14]3 years ago
3 0

Answer:

Good, Good, Good, Good, GOOOOOOOOOOOOOOOOOOOO000D. It's E btw I think I don't know

Step-by-step explanation:

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Answer this question please; number 5... show all work thank you
My name is Ann [436]

Answer:

rate of the plane in still air is 33 miles per hour and the rate of the wind is 11 miles per hour

Step-by-step explanation:

We will make a table of the trip there and back using the formula distance = rate x time

                 d              =            r       x       t

there

back

The distance there and back is 264 miles, so we can split that in half and put each half under d:

               d            =         r        x        t

there    132

back     132

It tells us that the trip there is with the wind and the trip back is against the wind:

           

              d           =        r         x        t

there     132        =    (r + w)

back      132       =     (r - w)

Finally, the trip there took 3 hours and the trip back took 6:

           

             d         =        r        *        t

there    132     =    (r + w)     *       3

back     132     =    (r - w)      *       6

There's the table.  Using the distance formula we have 2 equations that result from that info:

132 = 3(r + w)        and        132 = 6(r - w)

We are looking to solve for both r and w.  We have 2 equations with 2 unknowns, so we will solve the first equation for r, sub that value for r into the second equation to solve for w:

132 = 3r + 3w and

132 - 3w = 3r so

44 - w = r.  Subbing that into the second equation:

132 = 6(44 - w) - 6w and

132 = 264 - 6w - 6w and

-132 = -12w so

w = 11

Subbing w in to solve for r:

132 = 3r + 3(11) and

132 = 3r + 33 so

99 = 3r and

r = 33

7 0
3 years ago
Yensen is biking in a race that is 56 miles long. He has completed 35%of the race. How many miles has Yensen biked?
sergiy2304 [10]
0.35 multiplied by 56
=19.6
6 0
3 years ago
What is the answer to the question
Mazyrski [523]
$134 is how much she spends
hope this helps
7 0
4 years ago
Read 2 more answers
Calculate the chance of dice rolling the same time every roll
lilavasa [31]
I think it would be a one i eight chance of that happening 1/8
4 0
3 years ago
Paula runs with 2 of her friends. The table below shows their last 3 lap times.
patriot [66]
The range is the difference of the greatest value of the data points and the least value. So, for Paula's data, the range is: 16 min*60s/min - 20 s = 940 s. For Kate, the range is: 16min*60s/min - 20s = 940 s. For Sam, the range is: 16min*60s/1min - 10 s = 950 s. If you want to find the overall range, find the greatest and least amount in all of the data given. The overall range is: 16min*60s/min - 10 s = 950 seconds.
3 0
3 years ago
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