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Rashid [163]
3 years ago
12

Scarlet maintained a constant speed through her 7-hour journey . Her speed can be modeled by 455 = Mx , where x is the time in h

ours , and m’s the rate at which scarlet traveled
Mathematics
1 answer:
Neporo4naja [7]3 years ago
4 0

Answer:

Speed of car (M) = 65 Unit/hour

Step-by-step explanation:

Given:

Speed equation;

455 = Mx

Time taken (x) = 7 hours

Find:

Speed of car (M)

Computation:

455 = Mx

455 = M(7)

Speed of car (M) = 65 Unit/hour

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~~~ 20 POINTS ~~~
Ilia_Sergeevich [38]
A) Lets write our equations.

22x + 100 = 25x + 70

Now lets solve step-by-step.

Apply the inverse operation            22x + 100 = 25x + 70
                                                       -22x             -22x

25x - 22x = 3x

3x + 70 = 100
       -70     - 70               We subtract 70 from both sides because (inverse                                                                                                                  operation)

3x = 30

3x/3 = 30/3
x = 30/3
x= 10

B) We need to find which one is the most cheap.

Lets pick an integer to replace x.

22x + 100 = 25x + 70

Lets choose '2'

22(2) + 100 = 25(2) + 70
44 + 100
 50 + 70

144
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The first one : Country Carpets charges $144 , while at the same rate, City carpets charges 120.

So, obviously, City Carpets is cheaper than that other one, so he would most likely choose that one.  
5 0
4 years ago
Read 2 more answers
The diagram below shows the dimensions of a rectangular house with a rectangular backyard. What is the total area, in square fee
nignag [31]

Answer:

D) 5,200

Step-by-step explanation:

The formula to find the area of a r rectangle: l x w, where l is the length and w is width.

Area of the backyard: 50 x 80

= 4,000 ft

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Total = 4,000 + 1,200

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7 0
3 years ago
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Answer:

  A, B

Step-by-step explanation:

Divide both sides by 6 to see what those values should be:

  x < 4

Of course all negative numbers are less than 4, so choices A and B are correct. The given positive numbers are not less than 4, so the remaining choices are not correct.

8 0
3 years ago
Solve for x : 5x−7 = 3
SSSSS [86.1K]

Answer:

x=2

Step-by-step explanation:

3 0
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