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aleksandrvk [35]
3 years ago
8

Max is x years . Brother is 8 years older , sister is 12 years younger.total age.is 50 years.how old are they ?

Mathematics
2 answers:
Pani-rosa [81]3 years ago
8 0

Answer:

30

Step-by-step explanation:

12 + 8 = 20 so that means 50-20= 30 so max is 30 years old

azamat3 years ago
3 0
X+8=b
x-12=s
X+b+s=50 then
x+x+8+x-12=50
So 3x-4=50
Then 3x=54
So x=18
Then the brother is 26 and the sister is 6
Check 26+18+6=50
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Svetllana [295]

Answer:

You would expect for 35 people to have consumed alcoholic beverages.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they consumed alcoholic beverages, or they did not. The probability of a person having consumed alcoholic beverage is independent of any other person. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

We learned in Exercise 3.25 that about 70% of 18-20 year olds consumed alcoholic beverages in 2008.

This means that p = 0.7

We now consider a random sample of fifty 18-20 year olds.

This means that n = 50

How many people would you expect to have consumed alcoholic beverages

E(X) = np = 50*0.7 = 35

You would expect for 35 people to have consumed alcoholic beverages.

7 0
3 years ago
A piece of paper is four over one thousand inches thick so how many sheets of paper will it take to make a stack 1 inch high
trasher [3.6K]
Keep doing 4 over 1000 until the four reaches the 1000. If four does not go into 1000, then reduce the fraction 4/1000.
6 0
3 years ago
Very confused on this.... have a test tomorrow
Lostsunrise [7]

Answer:

ln(5/256)

Step-by-step explanation:

Step 1, do the stuff in parenthesis:

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Step 2, remove parenthesis and simplify:

1/5 (5ln5) - 8ln2 = ln5 - 8ln2

Step 3, use this formula-

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Step 4, use another formula:

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6 0
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Answer:

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4 0
1 year ago
A statue is mounted on top of a 21 foot hill. From the base of the hill to where you are standing is 57feet and the statue subte
AleksandrR [38]

Please find the attached diagram for a better understanding of the question.

As we can see from the diagram,

RQ = 21 feet = height of the hill

PQ = 57 feet = Distance between you and the base of the hill

SR= h=height of the statue

\angle SPR=Angle subtended by the statue to where you are standing.

\angle x=\angle RPQ= which is unknown.

Let us begin solving now. The first step is to find the angle \angle x which can be found by using the following trigonometric ratio in \Delta PQR :

tan(x)=\frac{RQ}{PQ} =\frac{21}{57}

Which gives \angle x to be:

\angle x=tan^{-1}(\frac{21}{57})\approx20.22^{0}

Now, we know that\angle x and \angle SPR can be added to give us the complete angle \angle SPQ in the right triangle \Delta SPQ.

We can again use the tan trigonometric ratio in \Delta SPQ to solve for the height of the statue, h.

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h\approx8.45 ft

Thus, the height of the statue is approximately, 8.45 feet.

3 0
3 years ago
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