Can u help me <br><br>thanks u

what is an art and a science that deals with the collection,organization,creative presentation and analysis of data? A.physics B

DENIUS [597]

Answer:

The answer is B. Statistics

7 0

2 years ago

Hi can someone help me find domain and range

dezoksy [38]

Answer:

Step-by-step explanation:

Domain is ( - ∞ , ∞ )

Range is [ 0 , 1 ] ∪ ( 2 , ∞ )

8 0

1 year ago

The average heights of x number of girls and 15 boys is 123. if the average heights of boys is 125 and that of girls is 120.find

mamaluj [8]

Answer:

$x = 10$ . In other words, there number of girls is $10$ .

Step-by-step explanation:

The average of a number of measurements is equal to the sum of these measurements over the number of measurements.

$\displaystyle \text{Average} = \frac{\text{Sum of measurements}}{\text{Number of measurements}}$ .

Rewrite to obtain:

$\begin{aligned}& \text{Sum of measurements}= (\text{Number of measurements}) \times (\text{Average}) \end{aligned}$ .

For this question:

$\begin{aligned}& \text{Sum of heights of boys} \\ &= (\text{Number of boys}) \times (\text{Average height of boys}) \\ &= 15 \times 125 = 1875\end{aligned}$ .

$\begin{aligned}& \text{Sum of heights of girls} \\ &= (\text{Number of girls}) \times (\text{Average height of girls}) \\ &= x \times 120 = 120\, x\end{aligned}$ .

Therefore:

$\begin{aligned}& \text{Sum of boys and girls} \\ &= \text{Sum of heights of boys} + \text{Sum of heights of girls}\\ &= 1875 + 120\, x\end{aligned}$ .

On the other hand, there are $(15 + x)$ boys and girls in total. Using the formula for average:

$\begin{aligned}& \text{Average height of boys and girls} \\ &= \frac{\text{Sum of heights of boys and girls}}{\text{Number of boys and girls}} \\ &= \frac{1875 + 120\, x}{15 + x}\end{aligned}$ .

From the question, this average should be equal to $123$ . In other words:

$\displaystyle \frac{1875 + 120\, x}{15 + x} = 123$ .

Solve this equation for $x$ to obtain:

$1875 + 120\, x= 123\, (15 + x)$ .

$(123 - 120)\, x = 1875 - 123 \times 15$ .

$x = 10$ .

In other words, the number of girls here is $10$ .

5 0

2 years ago

I know its nothing to do with education, but what type of thing should I wrote here?? :) its for McDonald's btw.

yuradex [85]

Answer:

Say you're a very charismatic and good people person, that you involve yourself in things that require a good understanding of teamwork, such as sports or any thing competitive.

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

ALGEBRA FINAL HELP PLEASE!!! ASAP!!!

Slav-nsk [51]

Answer: I am pretty sure the answer is

g(x) = (x+3)^2 +9

Consider brainleist?

Hope this helped

:D

8 0

3 years ago

Can u help me thanks u