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sleet_krkn [62]
3 years ago
10

Ann works 51/2 hours, Mary works 61/3 hours, and John works 41/4 hours. How many combined hours have they worked? A. 155/12 B. 1

65/12 C. 161/12 D. 151/12
Mathematics
1 answer:
Inga [223]3 years ago
7 0

Answer:

C.  16 + 1/12

Step-by-step explanation:

5 + 1/2  =  11/2 =  66/12

6 + 1/3  =  19/3   =  76/12

4 + 1/4  =  17/4   =   51/12

66/12  +  76/12  +  51/12  =  193/12

193/12  =  16 +  1/12

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Can you tell de answer?
kodGreya [7K]
Yes, it’s D because you would have want to compare both fractions by making them have the same denominator. Since 60 is the least common denominator for 10 and 12 (the denominators), you would convert the fractions by multiplying the numerator and denominator of 5/10 by 6 to get 60. 5/10 would turn into 30/60. Then you would multiply 6/12 both by 5, and then it would turn into 30/60. Now that you have equal fractions, you can guess that they are the same. Therefore, 30/60=30/60! An easier way of doing it would be just simplifying them into 1/2 and comparing them + seeing that they are both 1/2. Hope this helps!

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Caramelatte
7 0
3 years ago
P = 2L + 2W; for L NEED HELP PLEASE
Orlov [11]
L=(P-2W)/2 HOPE I HELPED YA :)
3 0
3 years ago
Valor absoluto de |-14|<br>​
faust18 [17]

Answer: 14

Step-by-step explanation: absolute value is always positive

4 0
3 years ago
Read 2 more answers
If sally got 28 questions correct and received 70% on the exam, how many questions were on the exam
Furkat [3]

Answer: 40

Step-by-step explanation:

Number of correct questions Sally got = 28 questions

Percentage of correct questions answered= 70% on the exam,

Total number of questions in the exam = Unknown

Let the total questions in the exam be represented as y.

Since Sally got 70% correctly, this will be:

70% of y = 28

70/100 × y = 28

0.7 × y = 28

0.7y = 28

Divide both side by 0.7

0.7y/0.7 = 28/0.7

y = 40

There are 40 questions in the exam.

7 0
3 years ago
Carla has $45. Pineapples cost $5 each and mangos cost $2 each. Let p stand for pineapples and let m stand for mangos. Write an
LenKa [72]

Answer

24

Step-by-step explanation:

2:2 = 8

45 / 5 = 168

168 - 45 = 123

123 - 45 = 78

78 take away the 7 is 8 , 8 x 5 = 40 / 8 = 24

5 0
3 years ago
Read 2 more answers
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