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
patriot [66]
3 years ago
8

in the central city grand prix out of 30 cars that started the race,12 of them finished. what percent of the cars finished the r

ace? what percent did not finished the race?
Mathematics
2 answers:
xxMikexx [17]3 years ago
7 0
Subtract 12 from 30 so that you know how many DID NOT finish. 30-12=18. 
12/30 finished. Divide 12 by 30. 12÷30=0.4, and multiply by 100%. 0.4x100=40, so
40% finished.

18/30 did not finish. Divide 18 by 30.  18÷30=0.6, and multiply by 100%. 0.6x100=60, so
60% did not finish.
olga_2 [115]3 years ago
3 0
To get the answer we can use proportion.
30 ------------- 100%
12 --------------x
crossmultiply now
30x=12*100%
30x=1200%      /:30 (divide both sides by 30)
x=40% - its the percentage of cars which finished the race.
100%-40%=60% - its the answer
You might be interested in
3x+3 gbggggggggggggggggggggg
ella [17]

Answer:

I think it is 3(x+1) not sure but try it(it is a graph answer)

7 0
3 years ago
P:-3x + 8x - 5x = x<br><br> q: (3x)(5y) = 15xy<br><br> Which of the following statements is false?
Varvara68 [4.7K]

Answer: Statement p is false.

Step-by-step explanation:

In both cases, we need to isolate the variables:

p: -3*x + 8*x - 5*x = x

   (-3*x - 5*x) + 8*x = x

    -8x + 8*x = x

        0 = x

This will be true only for one value of x, so this is not always true, which means that the statement is false.

q: (3*x)*(5*y) = 15*x*y

let's solve the left side:

  3*x*5*y = 15*x*y

  (3*5)*(x*y) = 15*x*y

   15*x*y = 15*x*y

This is true for every value of x and y, then this statement is true.

5 0
3 years ago
(2x-8)(2x+9) help please​
lesya [120]

(2x - 8)(2x + 9) \\ 4 {x}^{2}  + 18x - 16x - 72 \\ 4 {x}^{2}  + 2x - 72

HOPE IT HELPS

PLEASE GIVE BRAINLIEST

4 0
2 years ago
Read 2 more answers
7.3 as a mixed number simlified
joja [24]
Answer: 7 3/10
seven as a whole number, and .3 equals to 3/10 when converted
8 0
3 years ago
Juan says that the probability of picking two white marbles without replacing from a bag containing 3 solid white marbles and 5
Andru [333]
C brecause he’s innocent
3 0
3 years ago
Read 2 more answers
Other questions:
  • 3.9054 to 2 significant figure
    9·1 answer
  • The sum of a number times 6 and 4 equals 5
    8·1 answer
  • Aye friends. I'm still doing my younger brothers homework.
    6·1 answer
  • The yearbook club had a meeting. The meeting had 20 people, which is four-fifths of the club. How many people are in the club?
    11·2 answers
  • 7th grade math I need some help
    9·1 answer
  • Select the factored form of the polynomial that is modeled by this geometric diagram.
    11·1 answer
  • Stephen averaged 32.3 points a game. LeBron averaged 29.4 points a game. What was the difference between their averages?
    15·1 answer
  • PLEASE HELP MEEE PLEASEEEE
    6·1 answer
  • What is 1/3 plus 1/2 in fraction form
    11·1 answer
  • This season, the probability that the Yankees will win a game is 0.56 and the probability that the Yankees will score 5 or more
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!