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mamaluj [8]
3 years ago
11

In a class of 30 students, 12 have a brother and 25 have a sister. There are 2 students who do not have any siblings. What is th

e probability that a student who has a brother also has a sister?​
Mathematics
1 answer:
Debora [2.8K]3 years ago
4 0
12 I think , actually I am not sure about this , if it is wrong count on me
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Oscar is 16 yrs old and his sister is 12. what will be the ratio of Oscar's age to his sister's age in 2 years?Write as a fracti
just olya [345]
Oscar's age = 16
Sister's age = 12

Current year: 16 / 12
Simplest form: 4 / 3 ; both are divisible by 4.

2 years after: (16 + 2) / (12 + 2) = 18 / 14 ; add two years to both numbers.

Simplest form: of 18 / 14 is 9 / 7; both are divisible by 2.

4 0
4 years ago
Read 2 more answers
4- 4 x7+3= right the answer is -21, someone told me the answer is 10
sattari [20]
Yeah that’s the right answer
3 0
4 years ago
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75 is 25% more than 60, but 60 is 20% less than 75, explain why?
xxMikexx [17]

Answer:

Explanation:

15 goes into 60, 4 times (1 fourth is equal to 25%).

15 goes into 75, 5 times (1 fifth is equal to 20%)

So 75 is one fifth more because it has a value of 15 more, and 60 is 1 fourth less than 75 because its value is more minuscule and less is more.

If you don't understand this was quite the challenge to explain.

4 0
3 years ago
Please help! I'm getting timed.
Molodets [167]
Hi there! The answer is A.

t = 2(s + 2)
To get a proper idea of the type of function this formula represents we work out the parenthesis.

Working out the parenthesis can for instance be done using rainbow technique.
t = 2s + 4

We can now see sinilarities between this function an the general function of a line in slope intercept form
y = mx + n

The function t therefore describes a line with slope 2 and y-intercept 4. Therefore the answer is A.
3 0
3 years ago
60 is what percent of 48?
Yakvenalex [24]

Answer:

80%

Inverted = 125%

Step-by-step explanation:

Simplify the fraction to the most simpliest number, which is 4/5. 4/5 = 80%.

If it’s inverted (as in 60/48), the most simpliest number is 5/4. 5/4 = 125%.

7 0
3 years ago
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