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kvv77 [185]
2 years ago
13

Each week, Rosario drives to an ice-skating rink that is 60 miles away. The round-trip takes 2.75 hours. If he averages 55 miles

per hour on his way to the rink, which equation can be used to find x, the number of miles per hour he averages on his way home?
Mathematics
1 answer:
vazorg [7]2 years ago
3 0

Answer:

The answer to your question is x = 4d/t - S1

Step-by-step explanation:

Data

total time = t = 2.75 hours

Initial speed = S1 = 55 mi/h

Final speed = x

distance = d = 60 mi

Formula

speed = distance / time

Average speed = (Initial speed + final speed)/2  or

                          = (S1 + x)/2

Substitution

                             (S1 + x)/2 = 2(d) / t

Solve for x

                             x = (2d/t)2 - S1

Simplification and result

                              x = 4d/t - S1

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PLEASE HELP MEEEEEEEEE
kakasveta [241]

Answer:

ok so first amanda crossed then 10 meteters after bailey then anoth 10 meters cecilia so

10+10=20

20 meters

Hope This Helps!!!

4 0
2 years ago
A rectangle has a length of 3x + 7 and a width of 2x. If the perimeter of the
Art [367]

Answer:

The length of the rectangle is 31.

Step-by-step explanation:

We have that the length (L) and width (W) are:

L = 3x + 7

W = 2x

The perimeter of the rectangle is given by:

P = 2W + 2L

94 = 2(2x + 3x + 7)

94 = 10x + 14

x = 8

Now, we can calculate the length of the rectangle:

L = 3x + 7 = 3*8 + 7 = 31        

         

Therefore, the length of the rectangle is 31 units.

I hope it helps you!                

7 0
2 years ago
The measurement around the trunk of a tree just below shoulder height is called girth. The largest known american beech tree in
Bumek [7]

Answer:

24 1/6 - 19 5/12=

24 1/6÷12- 19 5/12÷12

24 2/2- 19 5/1= 5 3/1

3÷1= 3

5÷3= 3 1/2

Step-by-step explanation:

Step 1: Do the lcd and the number in between what you do is multiply the number next to it.

Step 2: Then subtract the mixed numbers and you get your answer.

Step 3: Divide 3 by 1

Step 4: Divide 3 by 5 and answer is 3 1/2

3 0
3 years ago
a bowler knocks down at least 6 pins 70% of the time. Out of 200 rools, how many times can you predict the bowler knock down at
Rufina [12.5K]
140 times.

70% of 200 is 140.
6 0
3 years ago
9-6=3, 6+3=9, 3+6=9 what is the missing fact family?
Taya2010 [7]

Answer:

<em>9-3=6</em>

Step-by-step explanation:

An addition/subtraction fact family has 2 addition equations and 2 subtraction ones.

The question already states both addition ones, but only one subtraction

The subtraction one stated is 9-6=3

The opposite is<em> 9-3=6</em>

<u>Hope this helps :-)</u>

7 0
3 years ago
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