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TiliK225 [7]
3 years ago
10

A girl is 18 years old and her brother is a third of her age. When the girl is 36 what would be the age of the brother?

Mathematics
2 answers:
ale4655 [162]3 years ago
8 0
First we need to calculate how many years her brother has when she is 18. As text says he is:
18/3 = 6 years old

Now when she gains another 18 years (36-18=18) he will also gain those 18 years

When she is 36 he will have 6+18=24 years old

Answer is 24.
fredd [130]3 years ago
7 0
Her brother is 6 yrs old
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Sum of three numbers in an as is 33 and the sum of thier cubes is 5049.find the numbers
Alex73 [517]

Sum of three numbers is 33 and  sum of their cubes is 5049 then three numbers are 7,11,15 or 15,11,7.

As given,

Let a-d, a, a +d be three numbers

Sum =33

⇒a-d + a +a +d =33

⇒ a =11

Sum of cubes= 5049

⇒ (a-d)³ + a +(a +d)³ =5049

⇒ a³ -d³ -3a²d +3ad² + a³ +a³ +d³ +3a²d +3ad² =5049

⇒3a³ + 6ad² = 5049

⇒ d=± 4

Therefore, sum of three numbers is 33 and  sum of their cubes is 5049 then three numbers are 7,11,15 or 15,11,7.

Learn more about numbers here

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6 0
1 year ago
What is 102.3 divided by 4.7 <br> estimated answer
andriy [413]

round 102.3 to 100

4.7 to 5

100/5=20

20 is the answer

6 0
3 years ago
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Help me please thank youuuuu ^_^
OverLord2011 [107]

Answer:

x = 6

Step-by-step explanation:

2x - 3 = 9

so 9+3 = 12, and 12÷2 = 6

the value of x is 6

5 0
2 years ago
I need help ASAP plsss
Verdich [7]

Answer:

dude that's easy 1,36 2,18 3,12 ,4,9 6,6

Step-by-step explanation:

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3 years ago
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A message source M of a digital communication system outputs a word of length 8 characters, with the characters drawn from the t
marysya [2.9K]

Answer:

The probability that M produces a word that looks like a byte is (\frac{2}{3})^8.

Step-by-step explanation:

It is given that a message source M of a digital communication system outputs a word of length 8 characters.

The characters drawn from the ternary alphabet {0,1,2}, and all such words are equally probable.

Total possible outcomes is

3\times 3\times 3\times 3\times 3\times 3\times 3\times 3=3^8

We need to find the probability that M produces a word that looks like a byte (i.e., no appearance of ‘2’). It means only 0 and 1 are included in the word.

Total favorable outcomes is

2\times 2\times 2\times 2\times 2\times 2\times 2\times 2=2^8

The formula for probability is

p=\frac{\text{Favorable outcomes}}{\text{Total outcomes}}

p=\frac{2^8}{3^8}

p=(\frac{2}{3})^8

Therefore the probability that M produces a word that looks like a byte is (\frac{2}{3})^8.

7 0
3 years ago
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