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
chubhunter [2.5K]
3 years ago
6

Two cars are travelling from Toronto to Quebec. Car A left Toronto at 8 a.m. and is moving with an average speed of 70 km/h. Car

B left Toronto at 10 a.m. and its average speed is 90 km/h. How many hours will it take for car B to catch car A?
(please show all your work Let, So, Equation and Solution and Therefore Statement)
Mathematics
1 answer:
vodka [1.7K]3 years ago
7 0

Answer:

It'll take 7 hours for the car B to cath up to A

Step-by-step explanation:

In order to solve this problem we can write the equation from the distance of each car. Assuming that t = 0 happens when the second car leaves Toronto. When the second car leaves Toronto, the first one is on the road for two hours already, thefeore it travelled a total of:

distance = speed*time = 70*2 = 140

We have:

Car A:

x(t) = 70*t + 140

Car B:

x(t) = 90*t

We now need to find the value of "t" that makes x(t) the same for both cars:

90*t = 70*t + 140

20*t = 140

t = 140 / 20 = 7 h

You might be interested in
Find the distance between the points with coordinates (-8.6,2.9) and (8.6,2.9)
Karo-lina-s [1.5K]
The answer i got was D-17.2 units. i used the distance formula to solve this problem
3 0
3 years ago
Elena is 56 inches tall. What is her height in centimeters? (Note: 100 inches = 254 centimeters) What is her height in meters?
LUCKY_DIMON [66]

Answer:

142.24cm

Step-by-step explanation:

If 100 inches = 254cm then if you do 254/100 you will get how many cm are in an inch. 254/100 = 2.54

This means there are 2.54 cm in an inch. Multiply 2.54cm by 56 inches and you get how many cm are in 56 inches which is 142.24cm. This means Elena is 142.24 cm tall.

5 0
3 years ago
Read 2 more answers
3 equivalent fractions for 9/7
yawa3891 [41]
To find three equivalent fractions of a fraction, simply multiply the fraction by a common factor.

For example, multiple both the numerator and denominator of 9/7 by 2.
This will give you a fraction of 18/14, which is equivalent.

You can do this with any number you like to create three equivalent fractions.

5 0
3 years ago
Somebody please help​
DaniilM [7]

Answer:

3/5x−3/7

Step-by-step explanation:

Simplify the expression.

3/5x−3/7

-hope it helps

6 0
2 years ago
Solve for x. help me please
Marina86 [1]

Answer:

the answer is 20

Step-by-step explanation:

180+180=360

80+70=150

180-150=20

5 0
2 years ago
Read 2 more answers
Other questions:
  • Nikolas and Jayson recorded the number
    7·2 answers
  • 28,-(-73),(-65),(95),-(47) least to greatest
    12·2 answers
  • I need help with these two
    6·2 answers
  • What is the LCM of 4, 27, and 12
    9·2 answers
  • Ninety-five percent of students at an elementary school are between 3.6 feet tall and 5.5 feet tall. Assume the height data at t
    5·1 answer
  • 4(9-3)*(8-2) using gema and operations
    10·1 answer
  • The graph of. A fourth degree polynomial function has x-intercept of -3,-2,0 and 2 the point (1,-24) is on the graph of this fun
    11·1 answer
  • Factor the polynomial.<br> 3x^2+11x+6
    8·1 answer
  • On the last day of the school book fair, all pencils were one set price and all books were a different set price. Sammy bought 2
    12·1 answer
  • Heellllppppppppppppp
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!