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Oxana [17]
2 years ago
14

after spending 7/9 of a three hours examination, a student left the exams hall. How many minutes has he to complete the duration

of the examination.​
Mathematics
1 answer:
Montano1993 [528]2 years ago
6 0
40 mins left! total time= 60 mins x 3 hours =180 mins. 180 divided by 9 is 20. 20 times 7 is 140. 180-140 equals 40. yay!
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Solve for c.<br> a(b-c)=d
Lisa [10]

Answer:

D: c=(ab-d)/a

Step-by-step explanation:

a(b-c)=d

ab-ac=d

ab=ac+d

ab-d=ac

(ab-d)/a=c

5 0
2 years ago
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Korvikt [17]

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8 0
2 years ago
When 8 is subtracted from Ollie’s age, the result is the same as subtracting 16 from 3 times his age.
Scilla [17]
X - Ollie's age

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5 0
2 years ago
Read 2 more answers
Please help extra points and Mark bring list
Nady [450]

answer: dividing the number by 100

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5 0
2 years ago
Which expressions are equivalent to 5(-2k-3)+2k
bulgar [2K]

Answer:

-8k - 15

Step-by-step explanation:

5(-2k-3)+2k

At first, we will break the parenthesis. To break that, we will multiply the value inside the parenthesis by the adjacent number, that is 5. Again, we have to consider the Algebraic operation (Golden rule) -

[(-) x (-) = (+); (+) x (-) = (-)]

Therefore, since there is a minus sign in each of the value inside the parenthesis, the result will be minus as 5 is a positive integer.

or, -5*(2k) - (5*3) + 2k

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or, -8k - 15 (after the deduction)

The answer is = -8k - 15

6 0
3 years ago
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