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
skad [1K]
4 years ago
14

If a sports car is traveling at 95 miles per hour, how long would it take the sports car to overtake a family car traveling at 3

5 miles per hour that left the same starting point 4.5 hours earlier?
Mathematics
1 answer:
levacccp [35]4 years ago
3 0
Distance = speed * time
d = st

The sports car travels d distance for t time at speed, s, 95 mph until it overtakes the family
car.
The equation for the sports car is
d = 95t

The family car travels the same distance, d, but since it left 4.5 hours earlier  than the sports car, it travels for t + 4.5 time until it is overtaken. It travels at speed, 35 mph.
The equation for the family car is
d = 35(t + 4.5)

We solve the two equations as a system of equations.

d = 95t
d = 35(t + 4.5)

Since d = d, set the right sides of the equations above equal to each other.

95t = 35(t + 4.5)

95t = 35t + 157.5

60t = 157.5

t = 2.625

The answer is 2.625 hours, or 2 hours, 37 minutes, and 30 seconds.

Check:
In 2.625 hours, the sports car travels: 95 mph * 2.625 h = 249.375 miles
The family car traveled 2.625 hours plus the extra 4.5 hours, or 7.125 hours.
In 7.125 hours, the family car travels 35 mph * 7.125 h = 249.375 miles.
The cars have traveled the same distance 2.625 hours after the sports car left, so our answer is correct.
You might be interested in
What is the difference in height between the shortest and longest candy bars?
scZoUnD [109]

Answer:

1.5 inches

Step-by-step explanation:

4 0
3 years ago
Number 8 and 9 are confusing and I’d like an explanation on how to do them please
Dahasolnce [82]
For number 9 just take the two functions and multiply or add them I can’t tell what sign that is
3 0
4 years ago
Write an equation that represents a horizontal translation 10 units left of the graph of g(x) = |x|
Vika [28.1K]
Answer:  h(x) = |x+10|

---------------------------------------------------------

Explanation:

To shift the graph 10 units to the left, we replace x with x+10. What's really going on is that the xy axis shifts 10 units to the right (because x is now x+10; eg, x = 2 ---> x+10 = 2+10 = 12) so it appears that the graph is moving to the left. The general rule is h(x) = g(x+10). 

So,
g(x) = |x|
g(x+10) = |x+10| ... every x has been replaced with x+10
h(x) = g(x+10)
h(x) = |x+10|

We can use a graphing tool like GeoGebra to visually confirm we have the right answer (see attached). Note how a point like (0,0) on the green graph moves to (-10,0) on the red graph. 

7 0
3 years ago
Read 2 more answers
Kathy designed a square patio. She made the sides of the patio 15 feet. What is the area of the patio?
viktelen [127]

Answer:

225 feet.

Step-by-step explanation:

15 X 15

6 0
3 years ago
The coordinates of triangle ABC are A(−4, 3), B(2, 3), and C(4, −1). A line segment runs through the triangle with endpoints Y(0
-BARSIC- [3]

We can say that the length of line segment Y'Z' will increase by a scale factor of 2.

4 0
3 years ago
Other questions:
  • Select linear or nonlinear to correctly classify each function. Function A.Linear B,Nonlinear 1.72=x3+y 2. y+1=5(x−9) 3.7y + 2x
    15·2 answers
  • you have a bottle of water with a leak. after 2 seconds there is 28 ounces left in the bottle. after 6 seconds there are 20 ounc
    5·2 answers
  • !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    10·1 answer
  • Help!? i dont understand. First question on top, and second question in bottom
    10·1 answer
  • A high school is having a pancake fundraiser. They have 4 packages of pancake mix that each feed 120 people. The function N (p)
    14·1 answer
  • Clifton drove for 3 hours at 52 mph. How fast must he drive during the next hour in order to have an average speed of 55 mph?
    8·1 answer
  • Help please & thank you !!
    8·1 answer
  • Solve equation: 5(10^x+2)=60
    7·1 answer
  • Solve the equation by the elimination method..!!
    5·1 answer
  • Noah bought 15 baseball cards for $9.00. Assuming that each baseball card costs the same amount, answer the following questions.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!