1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fenix001 [56]
3 years ago
7

I need help with math motion problems.

Mathematics
1 answer:
madreJ [45]3 years ago
7 0
The whole story begins at 9:00 AM, so let's make up a quantity called ' T ',
and that'll be the number of hours after 9:00 AM.  When we find out what ' T ' is,
we'll just count off that many hours after 9:00 AM and we'll have the answer.

-- The first car started out at 9:00 AM, and drove until the other one caught up
with him.  So the first car drove for ' T ' hours.

The first car drove at 55 mph, so he covered ' 55T ' miles.

-- The second car started out 1 hour later, so he only drove for (T - 1) hours.

The second car drove at 75 mph, so he covered ' 75(T - 1) ' miles.

But they both left from the same shop, and they both met at the same place.
So they both traveled the same distance.

(Miles of Car-#1) = (miles of Car-#2)

55 T = 75 (T - 1)

Eliminate the parentheses on the right side"

55 T = 75 T - 75

Add 75 to each side:

55 T + 75 = 75 T

Subtract 55 T from each side:

75 = 20 T

Divide each side by 20 :

75/20 = T

3.75 = T

There you have it.  They met 3.75 hours after 9:00 AM.

9:00 AM + 3.75 hours = <u>12:45 PM</u> . . . just in time to stop for lunch together.

Also by the way ...
when the 2nd car caught up, they were 206.25 miles from the shop.
You might be interested in
What is the equation in point−slope form of the line passing through (2, 2) and (4, 8)?
MrMuchimi
The answer issss D
I hope this helped u :D
3 0
2 years ago
Fractions that are greater than 3/8
BaLLatris [955]

Answer:

do it yourself looser

Step-by-step explanation:

3 0
3 years ago
The length of a triangel is three times its with.if the perimiter is at its most 112 centemeters,witch is the greates possible v
iris [78.8K]
I am assuming you do not mean The length of a triangle and you mean The length of a rectangle because the answer you given are the formula for the perimeter of a rectangle. With that said, the answer is D<span>.2w+2*(3w)112

The perimeter of a rectangle can be found by the following equation:

2L + 2W = P
OR 
P = 2L + 2W
The equation </span>P = 2L + 2W is read perimeter = 2 times Length + 2 times width

The Question:
<span>The length of a rectangle is three times its width.if the perimeter is at its most 112 centimeters ,which is the greatest possible value of the the width.
</span>
The length of a rectangle
This means the perimeter 

is
The word is means to use an equal sign

three times its width
This means 3 times w or 3w 
The w = width

perimeter is at its most 112
This means <=
<= means less than or equal to

Ok so lets look at our equation 

2L + 2W = P
2w + 2(3w) <= 112

5 0
3 years ago
Help me I need to pass so I can go on to the next thing plz someone help me. Will give brainliest!!​
expeople1 [14]
I think its 7 or 10 Dont remember that question
5 0
3 years ago
What does 48% equal as a number
Andrews [41]

Answer:

to convert a percent to a whole number just divide by 100

Step-by-step explanation:

.48

6 0
2 years ago
Other questions:
  • How many cups in 3 PT?<br><br> _________C.
    15·2 answers
  • Oil is leaking from a tanker at the rate of R(t) = 2000e^(-0.2t) gallons per hour where t is measured in hours. How much oil lea
    9·1 answer
  • In the parallelogram, &lt;1=3x+15 and &lt;3=7x-5. Find the measure of &lt;2.
    15·1 answer
  • What is the first mistake that was made? - 10x + 14 - 2x = 2( -3x - 2)
    12·1 answer
  • Darrien is making a solid figure out of folded paper. His solid figure has six congruent faces that are all squares. What sold f
    8·1 answer
  • A home builder wants to decorate the post at the bottom of a stairway. One way to do this is to glue a square-based pyramid to t
    9·1 answer
  • Uehehejjdjdjejjejejjdjdjejejejejejjejejejeejjd
    8·2 answers
  • Please help me with this
    5·2 answers
  • Help Plz<br> 1/3 divided by 5= ?
    13·2 answers
  • How to solve this?i can’t understand so can you explain
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!