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
lisov135 [29]
3 years ago
6

1) Working alone, Beth can tar a roof in 151

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
8 0

Answer:

A) 7.24 hours

Step-by-step explanation:

The together rate is the sum of each separate rate.

In this problem:

Beth's rate is 1/15(suppose there was a small typing mistake there, with 151 none of the options are correct).

Mike's rate is 1/14

The together rate is 1/x

Then

We want to find x.

\frac{1}{15} + \frac{1}{14} = \frac{1}{x}

15*14 = 210. So

\frac{14 + 15}{210} = \frac{1}{x}

\frac{29}{210} = \frac{1}{x}

Cross multiplication

29x = 210

x = \frac{210}{29}

x = 7.24

So the correct answer is:

A) 7.24 hours

You might be interested in
One die is blue and the other die is yellow. Both are rolled. What is the probability of getting the shm of 8?
suter [353]

Answer:

5 /36

Step-by-step explanation:

Sample space :

Number of faces^number of dice = 6^2 = 36

Sum of 8 on a roll of 2 dies :

Probability = required outcome / Total possible outcomes

Required outcome = number of times a sum of 8 is obtained on a roll of 2 dies = 5

Total possible outcomes = sample space = 36

P(obtaining a sum of 8) = 5 /36

8 0
3 years ago
$2.99 socks; 5.5% markup
Ket [755]
$3.15 would be the cost, after the mark up is added.
8 0
3 years ago
Read 2 more answers
If 50% is 10 what is 25%​
kaheart [24]

Step-by-step explanation:. The first says “I know that 10 is one-tenth of 100. I will therefore divide 50 by 10. The answer is 5”.

This is fine when the numbers are relatively simple. But suppose the numbers are more complicated.

What is 22% of 46?

Now it’s much less straightforward. You can’t just work out what 22% is, expressed as a fraction, and anyway, it’s not a simple fraction.

Instead, you have to divide 46 into 100 equal parts, and work out what 22 of them would be when added together.

So: 46 ÷ 100 = 0.46 [remember, when you divide by 100, you move the decimal point two places to the left].

0.46 × 22 = 10.12

Answer: 22% of 46 is 10.12.

Hope this helped :)

8 0
2 years ago
Identify the property that the statement illustrates
oksian1 [2.3K]

Answer:

6 units away from 0.

Step-by-step explanation:

when move to 6 you count the units.

5 0
3 years ago
pat calculated tan(88)° and obtained a value of 28.6363, but isn't sure what that value means in context. write at least one sen
coldgirl [10]

Step-by-step explanation:

tangent is the ratio of opposite (o) to adjacent (a). it means when an angle is getting bigger, it will impact to the ratio of o/a and reaching infinite value at the angle 90°.

8 0
3 years ago
Other questions:
  • Write y = 2x2-12x+25 in vertex form, plz show work.
    11·1 answer
  • At a certain restaurant, milkshakes cost $4 and cheeseburgers cost $6. If Al buys 1 milkshake and x cheeseburgers and spends at
    13·1 answer
  • We can treat selections from a sample as independent if the sample size is no more than ______ % of the size of the population.
    10·1 answer
  • The product of a number four is at most negative 10
    11·1 answer
  • Please help thank you!!
    15·1 answer
  • Evaluate each variable expressions<br> 44 (k-6) when k Is 6
    5·1 answer
  • Jessica is 63 inches tall. What is her height to the nearest centimeter? (Hint 1 in = 2.54 cm)
    10·2 answers
  • Erms is selling tickets to a musical performance.
    5·1 answer
  • What is the formula of \underline{force}force​ in physics?<br>​​​
    9·2 answers
  • Choose the expression for 9 decreased by 9
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!