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Andrew [12]
2 years ago
10

Please help. first one in gets brainliest along with 5* and thanks.

Mathematics
2 answers:
Aloiza [94]2 years ago
6 0
18-x
18/2=6
18-5=13 I’m not sure
PilotLPTM [1.2K]2 years ago
4 0

Answer:

18-x

18/2=6

18-5=13

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Pulse rates of women are normally distributed with a mean of 77.5 beats per minute and a standard deviation of 11.6 beats per mi
miss Akunina [59]

Answer:

Mean = 0, Standard deviation = 1

Step-by-step explanation:

We are given the following in the question:

Mean, μ = 77.5 beats per minute

Standard Deviation, σ = 11.6 beats per minute

We are given that the distribution of pulse rates of women is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

Putting the values, we get,

z_{score} = \displaystyle\frac{x-77.5}{11.6}

After, the standardization, that is conversion of all pulse rates of women to z scores, the mean of the distribution is 0 and standard deviation is 1.

Mean = 0, Standard deviation = 1

7 0
3 years ago
A local hamburger shop sold a combined total of 763 hamburgers and cheeseburgers on Saturday. There were 63 more cheeseburgers s
Airida [17]
In order to solve this we'll start by assigning variables to hamburgers and cheeseburgers, since these are what we're trying to find. Lets say x = hamburgers and y = cheeseburgers. So we know two things, we know that x+y= 763 (hamburgers plus cheeseburgers sold equals 763, and we know that y= x+63 (cheeseburgers sold equals 63 more than hamburgers sold). Now we have a system of equations. This can be solved most easily by rearranging each equation to each y, and then set them equal to each other:
x+y=763 -> y=763-x, and we already have y=x+63. Set them equal to each other:
x+63 = 763-x (add x to both sides) -> 2x+63 = 763 (subtract 63 from both sides) -> 2x = 700 (divide both sides by 2) x = 350. So we solved for x, which is hamburgers sold, which is what the question asks for, so your answer is 350 hamburgers were sold on Saturday
6 0
3 years ago
Which is Not equal to thr absolute value of -5?
USPshnik [31]

Answer:

5

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
A correlation coefficient of _____ indicates that the variables form a perfect linear relationship.
serg [7]
A correlation coefficient of 1 or -1 indicates that the variables form a perfect linear relationship.
8 0
3 years ago
8x(12+7-9)-(4+10) what’s the answer
navik [9.2K]

Equation- 8x(12+7-9)-(4+10)

Answer- 80x−14

6 0
2 years ago
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