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
Rufina [12.5K]
3 years ago
5

I am attaching the question

Mathematics
1 answer:
mafiozo [28]3 years ago
4 0

<u>Answer:</u>

r = \frac{120t}{120-t}

<u>Step-by-step explanation:</u>

Multiply both sides by r + 120.

<em>t </em>(<em>r </em>+ 120) = 120<em>r</em>

Expand.

<em>tr </em>+ 120<em>t </em>= 120<em>r</em>

Subtract <em>tr</em> from both sides.

120<em>t  </em>= 120<em>r </em>- <em>tr</em>

Factor out the common term <em>r</em>.

120<em>t </em>= <em>r </em>(120-<em>t</em>)

Divide both sides by 120 -<em> t</em>.

\frac{120t}{120-t} = r

Finally, switch <em>r</em> to the left side and you get your answer.

//also, sorry for answering late.. my wifi is poopy//

You might be interested in
Your teacher asks the class to evaluate the expression. Your classmate gives an incorrect answer of 256. Evaluate the expression
Leya [2.2K]

Answer:

What expression?

Step-by-step explanation:

8 0
3 years ago
Please help answer number 1
steposvetlana [31]
Maybe it’s consistent dependent
7 0
2 years ago
Read 2 more answers
A ladder leaning against a building makes an angle of 78 degrees with the ground. The foot of the ladder is 5 feet from the buil
tatiyna

9514 1404 393

Answer:

  24 feet

Step-by-step explanation:

The side adjacent to the angle is given, and the hypotenuse of the triangle is the unknown. The cosine relation applies:

  Cos = Adjacent/Hypotenuse

  hypotenuse = ladder length = (5 ft)/cos(78°) ≈ 24.0 ft

The ladder is about 24 feet long.

4 0
3 years ago
37 For a class picnic, two teachers went to the same store to purchase drinks. One teacher purchased 18 juice boxes and 32 bottl
Pavel [41]

Answer:

Step-by-step explanation:

Let j represent the cost of a juice box.

Let w represent the cost of a bottle of water.

One teacher purchased 18 juice boxes and 32 bottles of water, and spent $19.92.. This means that

18j + 32w = 19.92 - - - - - - - - - - - - 1

The other teacher purchased 14 juice boxes and 26 bottles of water, and spent $15.76. This means that

14j + 26w = 15.76- - - - - - - - - - - - 2

Multiplying equation 1 by 14 and equation 2 by 18, it becomes

252j + 448w = 278.88

252j + 468w = 283.68

Subtracting, it becomes

- 20j = - 4.8

j = - 4.8/- 20 = 0.24

Substituting j = 0.24 into equation 1, it becomes

18 × 0.24 + 32w = 19.92

4.32 + 32w = 19.92

32w = 19.92 - 4.32 = 15.6

w = 15.6/32 = 0.4875

Kara's prices are incorrect.

the cost of a juice box is $0.24

the cost of a bottle of water is $0.4875

7 0
3 years ago
Which of the
kondor19780726 [428]

The pic is attached.

7 0
3 years ago
Read 2 more answers
Other questions:
  • The slope of a line is 1/3. What is the slope of a line perpendicular to this line?
    8·1 answer
  • What does the graph of y=-3sin2x look like
    15·1 answer
  • What does 2.975 round to?
    9·2 answers
  • What is the value of the function when x = 2? <br> <br> x −4 −2 0 2 4<br> y 3 4 2 6 7
    8·1 answer
  • Frank started practicing his trumpet at 4:30 pm and finished at 6:00 pm. How long did he practice?
    14·1 answer
  • What is his total interest?
    13·2 answers
  • You need 2 eggs for a brownie’s recipe that makes one batch. If you need 9 eggs, how many batches can you bake? Write your answe
    5·1 answer
  • I’m not sure how to do this please help!
    12·1 answer
  • A liter of Burgundy wine in France is the approximate equivalent of buying how much wine in the United
    5·1 answer
  • Suppose you are looking to purchase a new TV. You are placing it in an opening that is 136 cm wide but want to leave at least 2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!