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
algol [13]
3 years ago
5

Riley and Erik have earned a total of 135 tokens to buy items in the school store. The ratio of the number of tokens that Riley

had to the number of tokens that Erik has is 8 to 7. How many tokens does Riley have?
Mathematics
1 answer:
lisabon 2012 [21]3 years ago
3 0

Answer:

<em>Riley has 72 tokens</em>

Step-by-step explanation:

<u>System of Equations </u>

We have two conditions for the tokens Riley and Erik have earned. Let's call x and y to the number of tokens of Riley and Erik respectively. The first condition states that

x+y=135

Solving for y

y=135-x

The second condition is that the ratio of the number of tokens that Riley had to the number of tokens that Erik has is 8 to 7. It's written as

\displaystyle \frac{x}{y}=\frac{8}{7}

Or equivalently

7x=8y

Replacing y from the first equation

7x=8(135-x)

Operating

7x=1080-8x

Simplifying

15x=1080

\boxed{x=72}

Riley has 72 tokens

You might be interested in
15s^11-25s^4 factorised <br><br> plz tell me. :)
saveliy_v [14]

For the numeric part, you'll have to find the GCD of 15 and 25, which is 5. So, we can factor a 5 and we have

5(3s^{11}-5s^4)

As for the literal part, you can factor s^4 because it's the power of s with the smallest denominator. So, we have

5s^4(3s^7-5)

8 0
3 years ago
Mr. Jones eats out at his favorite buffet restaurant every Friday night. If the cost is $9 and he budgets $42 for the month, how
alexandr402 [8]

Answer:

He will be able to eat nine times.

Step-by-step explanation:

Because nine times nine is 91 which is on one less then what he has, so that means he will be able to eat there nine times. Hope I helped

7 0
2 years ago
Find the value of f(-8).
fredd [130]

Answer:

-8f

Step-by-step explanation:

5 0
3 years ago
Chi chi can hit The golf ball 72 yards. Rory Can hit a golf ball 24 yards. How many times further can Chi chi hit a golf ball th
ivanzaharov [21]

Answer:

Chi chi canhit a golf ball three times further than Rory.

Step-by-step explanation:

To compare the distance between the two golfers, we can set up a ratio:

\frac{Chi chi Distance}{Rory Distance} = \frac{72}{24} =\frac{3}{1}

Since the distance that Chi chi can hit the ball is 3:1 the distance that Rory can hit the ball, than Chi chi can hit the golf ball three times further.  When reducing a ratio or fraction to lowest terms, you need to divide the numerator and the denominator by the same factor.  Since 72 can be evenly divided by 24, we can divide both the numerator and the denominator by 24 to get 3:1.

6 0
3 years ago
1/5x-8=4. what does x. equal​
Slav-nsk [51]

Answer:

12

Step-by-step explanation:

if you multiply everything by 5, then you can get rid of the fraction and the equation would now look like this:

x - 40 = 20

and now you can answer this simply

x - 40 = 20

  +40   +40

x = 60

and since you multiplied 5 beforehand, now you have to divide by 5 to get the real answer

60 ÷ 5 = 12

therefore, x = 12

8 0
4 years ago
Other questions:
  • On Sunday Sheldon bought 3 and 1/2kg of plant food. He used 1 and 2/3kg on his strawberry plants and used 1/4kg for his tomato p
    13·1 answer
  • How to order fractions from least to greatest with different denominators and numerators?
    15·1 answer
  • If 8 apples cost $1.60, how much is one apple? Question 2 options: 10 cents 15 cents 20 cents 25 cents Save
    5·2 answers
  • What's the gcf of 48 and 120
    15·2 answers
  • Twenty-six students will attend the field trip to the career center. The cost to attend the career center is $x. Fifteen of thes
    7·1 answer
  • At a restaurant Mike and his three friends decided to divide the bill evenly if each person pay $13 then what was the total bill
    7·2 answers
  • A survey about the student government program at a school finds the following results 190 students like the program 135 Students
    5·1 answer
  • The hypotenuses of two similar right triangles are segments of the same line. Which of these statements is true about the two hy
    13·1 answer
  • Help me please |7-11|=
    5·2 answers
  • Solve the equation<br>16x2 + 4x + 1 =0​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!