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gtnhenbr [62]
3 years ago
6

There are 15 people in the swimming club.

Mathematics
1 answer:
Burka [1]3 years ago
7 0

Answer:

6 girls, 9 boys

Step-by-step explanation:

Step 1:

2 : 3      15 people

Step 2:

2x + 3x = 15 people       We can turn the ratio into variables

Step 3:

5x = 15 people       We can now solve for the variable

Step 4:

x = 3      Now we know that the variable is 3

Step 5:

3 × 2 = 6     We can now solve for the number of girls

Step 6:

3 × 3 = 9      And we can also solve for the number of boys

Answer:

6 girls, 9 boys

Hope This Helps :)

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IrinaVladis [17]

Answer:

sjdifsjdhfifkfkfifjfjfofof

6 0
3 years ago
Two numbers whose sum is 44 and whose product is a maximum
Mashcka [7]

Answer:

x = y = 22

Step-by-step explanation:

It would help to know your math course. Do you know any calculus? I'll assume not.

Equations

x + y = 44

Max = xy

Solution

y = 44 - x

Max = x (44 - x)                    Remove the brackets

Max = 44x - x^2                   Use the distributive property to take out - 1 on the right.

Max = - (x^2 - 44x )               Complete the square inside the brackets.

Max = - (x^2 - 44x + (44/2)^2 ) + (44 / 2)^2 . You have to understand this step. What you have done  is taken 1/2 the x term and squared it. You are trying to complete the square. You must compensate by adding that amount on the end of the equation. You add because of that minus sign outside the brackets. The number inside will be minus when the brackets are removed.

Max = -(x - 22)^2 + 484

The maximum occurs when x = 22. That's because - (x - 22) becomes 0.

If it is not zero it will be minus and that will subtract from 484

x + y = 44

xy = 484

When you solve this, you find that x = y = 22 If you need more detail, let me know.


4 0
3 years ago
A carpet remnant is shaped like a triangle. It has a height of 32 inches and a base of 8 inches. Write an equation to represent
Zinaida [17]
128 square inches.



The area of a triangle is 1/2bh, where b is the base and h is the height. Substitute the values in.

1/2 * 8 * 32

Now, just solve.

4 * 32

128 square inches



Please consider marking this answer as Brainliest to help me advance.
4 0
3 years ago
Read 2 more answers
An airline company is considering a new policy of booking as many as 191 persons on an airplane that can seat only 180. (Past st
notka56 [123]

Answer:

1.3559644*10^-^5

Step-by-step explanation:

From the information given we extract the following data

Total Number of Trials (N) = 191

Required Value (x) = 181 (notice it is not 180 since at that value we have enough passengers)

Odds of success (p) = 0.85

Using the binomial formula for calculating probability, i.e.

P(x; N, p) = nCx * p^x *(1-p)^{N-x}

Inputting the values

P(181; 191, 0.85) = 191C181 *0.85^{181}  *(1-0.85)^{191-181} \\ P(181; 191, 0.85) = 1.3559644*10^-^5

3 0
3 years ago
A person standing close to the edge on top of a 72-foot building throws a ball vertically upward. The quadratic function h(t)=−1
aleksklad [387]

The quadratic function h(t) = −16t² + 84t + 72, shows that the person throws the ball from on top of a 72 feet building at a velocity of 84 feet/second.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

The quadratic function h(t) = −16t² + 84t + 72, shows that the person throws the ball from on top of a 72 feet building at a velocity of 84 feet/second.

Find out more on equation at: brainly.com/question/2972832

#SPJ1

7 0
2 years ago
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