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
Goryan [66]
3 years ago
10

A team of runners ran a relay race. Each runner ran 7 1/2 kilometers. The total length of the race was 45 kilometers. Write and

solve an equation to find how many runners were on the team. *
Mathematics
1 answer:
Travka [436]3 years ago
7 0

Answer:

6 runners

Step-by-step explanation:

Each runner ran 7.5 km.  If there were n runners, then (7.5 km)n = 45 km.

Solve this for n by dividing 7.5 km into 45 km:

n = 6

There were 6 runners.

You might be interested in
What is the following sum?<br> 4sqrt5+2sqrt5
Anna71 [15]

Answer:

4\sqrt{5} +2\sqrt{5}\\= 6\sqrt{5}

Step-by-step explanation:

7 0
3 years ago
Please help me ASAP! thank you I’m just really confused:)
Debora [2.8K]
Lol this one is kind of confusing but i think it’s C because there can be a centipede that is missing a leg lol
7 0
3 years ago
Read 2 more answers
HELP!!!!!!!!!! 19POINTS!!!!!!!!!!!!!!!!!!
Juli2301 [7.4K]
F(x) = (-1)^x* 2^(2x-1)
5 0
3 years ago
A class has 15 boys and 16 girls. What is the probability that a boy's name is drawn at random? (5 points)
tino4ka555 [31]

Answer:15/31

Step-by-step explanation: because there are 31 kids in all and 15 of them are boys so 15/31

3 0
3 years ago
Read 2 more answers
Brainlist to whoever shows me how to solve this step by step.
Andrews [41]

Answer:

  x ∈ {-4, 2}

Step-by-step explanation:

The x-coefficient (+2) is the sum of the constants in the binomial factors of the equation, and the constant term (-8) is their product.

Since you're familiar with the divisors of 8, you know that the two factors of -8 that total +2 are -2 and +4. These are the constants in the binomial factors:

  f(x) = x^2 +2x -8

  f(x) = (x -2)(x +4)

The roots of f(x) are the values of x that make these factors be zero. They are x=2 and x=-4.

The roots of f(x) are -4 and 2.

_____

Above is the solution by factoring. We can also "complete the square" to find the roots. Anytime we're looking for roots, we want the values of x that make f(x) = 0.

  x^2 +2x -8 = 0

  x^2 +2x = 8 . . . . . add the opposite of the constant

  x^2 +2x +1 = 8 +1 . . . . . add the square of half the x-coefficient: (2/2)² = 1

  (x +1)² = 9 . . . . . . . . . . . write as squares

  x +1 = ±√9 = ±3 . . . . . . take the square root

  x = -1 ± 3 . . . . . . . . . . . subtract 1

The roots are x=-4, x=2.

4 0
3 years ago
Other questions:
  • Express 120 as a product of two numbers, one of which is 2 less than the other.
    5·1 answer
  • Simplify: (2x^4y^3) • (6x^3y^2)
    6·1 answer
  • The width of a rectangle is shown below: a coordinate plane with a point a at negative 3, 3 and c at negative 3, negative 4. if
    15·1 answer
  • The greatest common factor of two whole numbers is 9. The ratio of the greater number to the lesser number is 6:5. What are the
    13·1 answer
  • It rained 3/8 of a inch each day for 3 days straight how much rain fell altogether
    12·1 answer
  • A weather reporter in your area said that the speed of sound in air today is about one thousand one hundred feet per second. Wha
    8·1 answer
  • Why is 3 times 1/10 less than 3 times 10
    11·1 answer
  • B. A window in the room has an actual width of 2.5 feet.
    14·1 answer
  • Find the product of 13 and -31​
    8·2 answers
  • Please help will give brainliest
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!