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
Virty [35]
2 years ago
5

Bob, driving a new Ford, travels 330 miles in the same amount of time it takes John, driving an old Chevy and traveling 10 miles

per hour faster, to travel 390 miles. How fast is Bob driving?
Mathematics
1 answer:
denis-greek [22]2 years ago
5 0

Answer:

  55 mph

Step-by-step explanation:

Let x represent Bob's speed. Then John's speed is x+10, and their respective times are found by ...

  time = distance/speed

  330/x = 390/(x+10) . . . . . . . the times are the same

  330(x +10) = 390x . . . . . . .  multiply by x(x+10)

  3300 = 60x . . . . . . . . . . . . . subtract 330x

  55 = x . . . . . . . . . . . . . . . . . . divide by the coefficient of x

Bob is driving at 55 miles per hour.

You might be interested in
which of these is the algebraic expression for "seven less than some number?" (3 points) Fraction 7 over h Fraction h over 7 h −
Ivenika [448]

Answer: h-7

Step-by-step explanation: The correct answer is h-7. H represents “some number,” and then you subtract 7 from that, which give you the expression h-7.

3 0
3 years ago
Which of the following number sentences is represented on the number line shown below?
Aleksandr [31]
C (I hope this is correct!)
6 0
2 years ago
Read 2 more answers
Can every even number be written as a sum of two primes?
astraxan [27]
The Goldbach Conjecture is a yet unproven conjecture stating that every even integer greater than two is thesum of two prime numbers. The conjecture has been tested up to 400,000,000,000,000. Goldbach's conjecture is one of the oldest unsolved problems in number theory and in all of mathematics.
5 0
3 years ago
Central High wants to estimate the number of seniors who plan to go to a 4-year college. Answer the following.
Elodia [21]

Answer:

390 seniors

Step-by-step explanation:

13/20=.65

600x .65=390

4 0
2 years ago
Read 2 more answers
The first floor of a house consists of a kitchen, playroom, and dining room. The areas of the kitchen, playroom, and dining room
guapka [62]
Answer: don’t know give me brainless

Theory: cause
7 0
3 years ago
Other questions:
  • write the converse of the conditional statement "if a parallelogram has one right angle, then it is a rectangle
    12·2 answers
  • Nikki made 3 cups of pear puree.she filled some 2-ounce containers for freezing.how many full containers of pear puree did Nikki
    13·1 answer
  • Two numbers are in a ratio of 5:7. Find the largest number if their sum is 96. EXplain and show work pls.
    7·1 answer
  • Nine new employees, two of whom are married to each other, are to be assigned nine desks that are lined up in a row. If the assi
    9·1 answer
  • 1 1/4+2 1/2 what is the awnswer?
    8·2 answers
  • What’s -7 1/3 divided by 1 2/9
    11·1 answer
  • Almost of the mass of the human body is made up of just six elements.
    12·1 answer
  • If the probability that is will rain is 0.7 what is the probability that it will not rain?
    13·2 answers
  • What is the value of x in this logarithmic equation?
    9·1 answer
  • Easy question i just dont know how to do it! help immediately will give brainliest thanks!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!