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sleet_krkn [62]
2 years ago
7

Need help ? I can help you with your questions !

Mathematics
1 answer:
d1i1m1o1n [39]2 years ago
6 0

Answer:

Thank you ma'am. I have one

Step-by-step explanation:

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Sophie and Simon are peeling a pile of potatoes for lunch in the cafeteria. Sophie can peel all the potatoes by herself in 45 mi
tensa zangetsu [6.8K]
Short Answer: 18 minutes
Remark

The answer to this problem is less than the smallest time of the two people working together. that fact lets out C and D (38 minutes and 75 minutes). Now you have to choose 15 minutes and 18 minutes. There's a method. No guessing needed.

Givens
Let the time for Sophie = S
Let the time for Simon = M
Let the job to completion = 1 
S = 45 minutes
M = 30 minutes

Step One
Convert minutes to hours.
45 minutes = 45 / 60 = 3/4 hour = 0.75 hour
30 minutes = 30 / 60 = 1/2 hour = 0.50 hour

Step Two
Set up the Equation
The formula is a form of job / hour.
Let the time = t that they both have to work

job = 1 in these problems.
1/S + 1/M = 1/t
1/0.75 + 1/0.5 = 1/t

Solve
1 ÷ 0.75 = 1.33333
1 ÷ 0.5 = 2

1.3333 + 2 = 3.33333 
3.3333 = 1 / t                    Multlply both sides by t
3.3333*t = 1
t = 1 / 3.333333333
t = 0.3 of an hour


1 hour = 60 minutes
0.3 hours = x              Cross Multiply
x = 60 * 0.3
x = 18 minutes

Answer working together it took them 18 minutes  <<<<< 
6 0
3 years ago
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Which angles shown in the drawing are supplementary
Arte-miy333 [17]
In order to answer this, we need an image to be able to see what they look like.
5 0
3 years ago
Which expressions is the same as 1/5 of 7
Harlamova29_29 [7]
The answer is 1/5 < 35/5
8 0
2 years ago
Please help if you’re able to !!! im giving brainliest to the best answer!!
max2010maxim [7]
You should add them up both of the sides
4 0
3 years ago
PLS HELP! 30 POINTS AND BRAINLIEST!!!
Elena-2011 [213]

Answer:

C. m<1 + m<5 = 180  (reason: they are consecutive angles, and should be congruent)

3 0
3 years ago
Read 2 more answers
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