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USPshnik [31]
2 years ago
12

I am in high school in sxhool form an i just don't understand how to do BMI ( body mass index ) no matter how much i try paying

attention in class i just don't understand it .
COULD SOMEONE EXPLAIN IT TO ME ,FOLLOW ME PLZ!!
I am new here .


​
Mathematics
1 answer:
Rom4ik [11]2 years ago
4 0

Using Imperial Measurements

Answer:

Square your height in inches. For example if you are 70 inches tall, then multiply 70 by 70. The answer would be 4,900.

Divide weight by height. If you weigh 180 pounds, then divide 180 by 4,900. The answer is 0.03673.

Multiply your last answer by 703. This equals 25.82 so your BMI in this example would be 25.8.

The equation is simply (height^2), (weight/height^2), (Answer*703) = BMI.

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A random sample of 121 students from the University of Oklahoma had a sample mean ACT score of 23.4 with a sample standard devia
Grace [21]

Answer:

(22.74,24.06) is the required 95% confidence interval for the population mean ACT score of University of Oklahoma students.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 121

Sample mean = 23.4

Sample standard deviation = 3.65

Level of significance = 0.05

Degree of freedom

= n - 1 = 120

95% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Calculation of critical value:

t_{critical}\text{ at degree of freedom 120 and}~\alpha_{0.05} = \pm 1.9799  

Putting the values, we get,  

23.4\pm 1.9799(\dfrac{3.65}{\sqrt{121}} )\\\\ = 23.4 \pm 0.6569\\\\ = (22.7431 ,24.0569)\approx (22.74,24.06)  

(22.74,24.06) is the required 95% confidence interval for the population mean ACT score of University of Oklahoma students.

5 0
3 years ago
PLEASE HELP 2 QUESTIONS 45 POINTS!!!!!!!!!
Effectus [21]

Answer:

1. -8x² - 16x - 6      a = -8, b = -16, c = -6

1. 4x² - 1                  a = 4, b = 0, c = -1

Step-by-step explanation:

use the 'foil' method:

(4x + 2)(-2x - 3)

F: -8x²     O: -12x       I: -4x       L: -6

-8x² - 16x - 6

(2x + 1)(2x - 1)

F: 4x²     O: -2x       I: 2x       L: -1

4x² - 1

5 0
2 years ago
Write a multiplication equation that represents the question: how many 3/8 are in 8?
goldenfox [79]

Answer:

8

Step-by-step explanation:

\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8}

\frac{3}{8} × 8

= 3

In algebra:

\frac{3}{8} × y = 3

y = 3 ÷ \frac{3}{8}

y = 8

7 0
3 years ago
When would use a frequency in math?
Anon25 [30]
When dealing with statistics (probabilities of events etc) and histograms
7 0
3 years ago
What happens if 0 is one of the coordinates?
aleksandrvk [35]

Answer:

Its is just 0

Step-by-step explanation:

3 0
3 years ago
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