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Luden [163]
3 years ago
11

A truck driver drove 120 miles in 1 3/4 hours. What is the speed of the truck in miles per hour? PLEASE HELP

Mathematics
1 answer:
Assoli18 [71]3 years ago
4 0
<span>Turn 1 3/4 into a decimal number: 1.75
So, 120 miles in 1.75 hours, but we want to know miles in *one* hour. Divide both numbers by 1.75. 120/1.75 miles in 1.75/1.75 hour = 120/1.75 miles in 1 hour. 120/1.75 is 68.57 miles in one hour, so 68.57 mph.</span>
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steposvetlana [31]
I say 50 would be your answer
8 0
3 years ago
Liza is driving to her sister's house 360 miles away. After 4 hours, Liza is 2 3 of the way there.
DochEvi [55]

Liza is driving to her sister's house 360 miles away. After 4 hours, Liza is 2/3 of the way there.   How many more hours  does Liza have to drive?

<em><u>Answer:</u></em>

Liza need to drive 2 more hours to reach her sister house

<em><u>Solution:</u></em>

Given that Liza is driving to her sister's house 360 miles away

So total distance = 360 miles

After 4 hours, Liza is 2/3 of the way there.

\frac{2}{3} r d \text { of total distance }=\frac{2}{3} \times 360=240

So Liza has covered 240 miles in 4 hours

Let us find the speed

<em><u>The relation between distance and speed is given as:</u></em>

speed = \frac{distance}{time}

speed = \frac{240}{4} = 60

Thus speed = 60 miles per hour

Assuming speed is same throughout the journey, let us calculate the time taken to complete remaining distance

Remaining distance = 360 - 240 = 120 miles

Now distance = 120 miles and speed = 60 miles per hour

time taken = \frac{distance}{speed}\\\\time taken = \frac{120}{60} = 2

Thus Liza need to drive 2 more hours to reach her sister house

4 0
3 years ago
4. Factor the binomial.<br> 16x2 – 25
fiasKO [112]

Answer:

a^2-b^2=(a+b)(a-b) where a=4x and b=5. (4x+5)(4x-5)

Step-by-step explanation:

Since both terms are perfect squares,factor using the difference of squares formula

6 0
3 years ago
If LM=41-2x and NP=7x+5, find LM
Tatiana [17]
Answer:
LM = 33 units

Explanation:
From the drawing:
LM = NP
41 - 2x = 7x + 5
41 - 5 = 7x + 2x
36 = 9x
x = 9

This means that:
LM = 41 - 2x 
LM = 41 - 2(4) 
LM = 33 units

Hope this helps :)

8 0
3 years ago
The total number of dollars you would have received if you received one dollar on your first birthday, two dollars on your secon
Tanzania [10]

Answer:

262,143

Step-by-step explanation:

  1. 1
  2. 1+2
  3. 3+4
  4. 7+8
  5. 15+16
  6. 31+32
  7. 63+64
  8. 127+128
  9. 255+256
  10. 511+512
  11. 1023+1024
  12. 2047+2048
  13. 4095+4096
  14. 8191+8192
  15. 16,383+16,384
  16. 32,767+32,768
  17. 65,535+65,536
  18. 131,071+131,072

        =262,143

6 0
3 years ago
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