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
eimsori [14]
3 years ago
7

The swimming team has competed 45 races this season. They have won 30 races so far. How many races will the team need to win tod

ay for the team to have a 75% success rate?
Mathematics
1 answer:
julia-pushkina [17]3 years ago
7 0

Answer:

The team needs to win 15 races today.

Step-by-step explanation:

The team has completed 45 races so far and has won 30 so far.

The current success rate is

r = \frac{30}{45} * 100\% = 66.7\%

We need this success rate to be 75%

Then the team must win a number x of races such that

r = \frac{30 + x}{45 + x} = 0.75

Now we solve the equation for x.

\frac{30 + x}{45 + x} = 0.75\\\\30 + x=0.75(45 +x)\\\\30 + x=0.75(45) +0.75x\\\\x- 0.75x = 33.75-30\\\\0.25x = 3.75\\\\x= \frac{3.75}{0.25}\\\\x=15

Finally the team need to win  15 carreras today

You might be interested in
Simplify the expression: 2[(8−4)5÷8]
nignag [31]

Answer:

5.

Step-by-step explanation:

2[(8−4)5/8]

= 2[4*5 / 8]

= 2 * 2.5

= 5.

8 0
3 years ago
Carol wants to make a quilt using a scale of 1.5 inches=2 feet. Her scale drawing is 7.5 inches by 10.5 inches. What is the area
cestrela7 [59]

Answer:

140 ft

Step-by-step explanation:

7 0
3 years ago
A baker wanted to enter the apple pie
dimaraw [331]

Answer:

11 pies

Step-by-step explanation:

100-12=88

88/8=11

6 0
3 years ago
What is the measure of ∠ADC?
Pachacha [2.7K]

Answer:

131

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Solve: x²+5x-6 = 0 <br>Answer please​
DochEvi [55]
ANSWER: x = 1 or x = -6
Ok done. Thank to me :>

6 0
2 years ago
Read 2 more answers
Other questions:
  • 3(4x-10)=2(3x-30) i need help again i have to turn in all of my school work tomorrow so i don't fail the 8th grade
    8·1 answer
  • What dose 0.022222222 equale in a fration?
    9·1 answer
  • F john can drink one barrel of water in 6 days, and mary can drink one barrel of water in 12 days, how long would it take them t
    13·1 answer
  • ⚠️❗️What is the volume of the regular pyramid below?
    10·2 answers
  • to get a free meal at his favorite restaurant Tom needs to spend $50 or more at the restaurant he has already spent $30.25. How
    5·2 answers
  • Find the values of x and y
    12·2 answers
  • Which statement is true
    11·1 answer
  • Socially conscious investors screen out stocks of alcohol and tobacco makers, firms with poor environmental records, and compani
    9·1 answer
  • In a football game, a team loses 8 yards, then loses 3 yards, then loses 11 yards.
    13·2 answers
  • What is the expression and value of "six less than nine times the sum of a number and eight"
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!