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Mariulka [41]
2 years ago
8

What is the rate of change?

Mathematics
2 answers:
Sergio [31]2 years ago
6 0

Answer:5

Step-by-step explanation:

KengaRu [80]2 years ago
5 0

Answer:

5

Step-by-step explanation:

19-14 = 5

24 - 19 = 5

29 - 24 = 5

and so on

I hope this helps!

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Can some please help me!!!! I need this asap!
Alecsey [184]

Answer:

A= -1,4 B=2,3 C=3,0 D=-1,-1

Step-by-step explanation:

idk what your looking for but I hope this helps

6 0
3 years ago
How many times does 3/8 go into 3/16?
Sunny_sXe [5.5K]

Answer:

1/2

Step-by-step explanation:

(3/16)/(3/8)

(3/16)*8/3

1/2

5 0
3 years ago
Read 2 more answers
What are the values of u and v
lubasha [3.4K]

Answer:

u=72

v=61

Step-by-step explanation:

for U:

54+54=108

180-108=72

For V:

180-58=122

122/2=61

5 0
3 years ago
A) x and y are two numbers taken from the list below.
Andrew [12]

Answer:

Step-by-step explanation:

here is a solution :

8 0
3 years ago
Working alone, Henry takes 3 hours less than Mary to clean the carpets in the entire office. Working together, they can clean th
Sati [7]

Answer:

It would take Henry 3 hours to clean the office carpets if Mary were not there to help

Step-by-step explanation:

Assume that it takes Henry t hours to clean the carpets

∵ Henry takes 3 hours less than Mary to clean the carpets

∵ Henry takes t hours

- That means add 3 to t to find Mary time

∴ Mary takes t + 3 hours

∵ The rate of Henry is \frac{1}{t}

∵ The rate of Mary is \frac{1}{t+3}

∵ Working together, they can clean the carpets in 2 hours

- Add the two rates and equate the answer by \frac{1}{2} (their rate together)

∴ \frac{1}{t}+\frac{1}{t+3}=\frac{1}{2}

Multiply the two denominators and multiply each numerator by the other denominator to add the two fractions of the left hand side

∵ \frac{(1)(t+3)}{t(t+3)}+\frac{(1)t}{t(t+3)}=\frac{1}{2}

∴  \frac{(t+3)}{t(t+3)}+\frac{t}{t(t+3)}=\frac{1}{2}

- Add the two fractions in the left hand side

∴ \frac{t+3+t}{t(t+3)}=\frac{1}{2}

∴  \frac{2t+3}{t^{2}+3t}=\frac{1}{2}

Use the cross multiplication

∵ (t² + 3t)(1) = 2(2t + 3)

∴ t² + 3t = 4t + 6

- Subtract 4t from both sides

∴ t² - t = 6

- Subtract 6 from both sides

∴ t² - t - 6 = 0

- Factorize it into two factors

∴ (t - 3)(t + 2) = 0

Equate each factor by 0 to find t

∵ t - 3 = 0

- Add 3 to both sides

∴ t = 3

OR

∵ t + 2 = 0

- Subtract 2 from both sides

∴ t = -2 ⇒ reject this answer because there is no - ve time

∴ t = 3

∴ Henry would take 3 hours to clean the carpets alone

It would take Henry 3 hours to clean the office carpets if Mary were not there to help

8 0
3 years ago
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