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andrew11 [14]
3 years ago
14

5 năm trước tổng số tuổi của hai mẹ con là 55 tuổi. Hiện nay tuổi con bằng 4/9 lần tuổi mẹ. Tính số tuổi của mẹ và tuổi con hiện

nay?
Mathematics
1 answer:
soldi70 [24.7K]3 years ago
3 0

Answer:

12

Step-by-step explanation:

12

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The ratio of boys to girls is 5:6 if there are72 girls what is the total number of students
Irina18 [472]
72 represents 6 "units", so divide by 6 to get the number of people in one "unit":

72/6 = 12

Now multiply by 5 to get the number of boys:

12 * 5 = 60 boys
5 0
3 years ago
Twice as many men as women attended the concert. If the total attendance was 714, how many women
mixas84 [53]

Answer:

Step-by-step explanation:

This is actually pretty simple. If x= a person, then 2x is men, and x is women.

You just have to solve for x.

714=2x+x

714=3x

x=238

Then you have to multiply it back out.

Men: 476

Women: 238

I hope this helps!

If you need help with anything else, or this answer just doesn't make sense, just let me know!

6 0
3 years ago
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Help meeeeeeeeeeee pleaseeeeeeeeeeeeee!!
Vikentia [17]

Answer:

Step-by-step explanation:

the answer is 34 when you get a2 ans subtract the mineral you get a desemel and if you round that using the arcoulation sistum you get 34 hope this helps messege me if it dose

7 0
1 year ago
? A mug can hold 13.46 oz of coffee without overflowing. The radius of the mug is 3 cm. Given that 1 cm3 equals 0.034 oz, what i
Elan Coil [88]

Answer:

14 cm

Step-by-step explanation:

Given:

A mug can hold 13.46 oz of coffee.

The radius of the mug is 3 cm.

Given that 1 cm^{3} equals 0.034 oz.

Question asked:

What is the height of the mug to the nearest centimeter ?

Solution:

Given that 1 cm^{3} equals 0.034 oz.

By unitary method:

0.034 oz = 1 cm^{3}

1 oz = \frac{1}{0.034}

13.46 oz = \frac{1}{0.034}\times13.46 =395.88 \ cm^{3}

A mug can hold 13.46 oz of coffee means volume of cylinder is given which is 395.88 cm^{3}. Now we can find the height of the mug by using volume of cylinder formula:

volume of cylinder = \pi r^{2} h

                   395.88=\frac{22}{7} \times3\times3\times \ h\\395.88=\frac{198 \ h}{7}

By cross multiplication:

                 395.88\times 7 =198\ h\\2771.16= 198\ h

By dividing both side by 198

h = 13.99 cm

Therefore,  height of the mug to the nearest centimeter is 14 cm.

                   

6 0
4 years ago
Read 2 more answers
Take away 2 from 7 times h
yan [13]

Answer:7h-2

Step-by-step explanation:

take away 2 indicates -2

7 times h indicates 7h

then you have a few ways to write this out either: -2+7h or 7h-2

both are correct!

3 0
3 years ago
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