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ra1l [238]
3 years ago
5

The heights of 500 students at a local school were recorded and found to be approximated by the normal curve below. Which

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
5 0

Answer:

option C.

Step-by-step explanation:

The given graph is the bell shaped graph.

From the graph we can observe that the peak is at 69.

So, the mean of the data is = 69 .

Standard deviation is the deviation of the graph from the mean value.

 =  72-69 = 3

Hence, the standard deviation is equal to 3.

So, the correct answer is option C.

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Nadusha1986 [10]

Answer:

V lies in the exterior of <STU.

Step-by-step explanation:

V lies in the exterior of <STU.

8 0
3 years ago
The product of a number and four, increased by 5.
german
I’m pretty sure the answer is 4x+5
3 0
1 year ago
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2.8×10 to the -3 power minus 0.00065
Bas_tet [7]

Answer:

the answer is 3.37723077E13

Step-by-step explanation:

4 0
3 years ago
What is the simplified form of the following expression? 2 StartRoot 18 EndRoot + 3 StartRoot 2 EndRoot + StartRoot 162 EndRoot
inna [77]

Answer: 2*√18 + 3*√2 + √162 = 18*√2

Step-by-step explanation:

I guess that the equation is:

2*√18 + 3*√2 + √162

And we want to simplify it.

first 18 = 9*2

then we can write:

2*√18 = 2*√(9*2) = 2*3*√2 = 6*√2

and 162/9 = 18

then we can write:

√162 = √(9*18) = √9*√18 = 3√18

now we can use the previous step: √18 = 3*√2

and:

√162 = 3*(3*√2) = 9*√2

now we can write our equation as:

6√2 + 3√2 + 9√2 = (6 + 3 + 9)√2 = 18*√2

And now we can not simplify it further more, so here we end.

4 0
3 years ago
Use the midpoint formula to find the midpoint between H(3, 9) and J(9, -2).
TiliK225 [7]

Hello!

The midpoint formula is basically an average of x and y.

It is also written as: (\frac{x_{1}+x_{2}} {2},\frac{y_{1}+ y_{2}} {2}).

With the formula above, we can substitute the given points into the equation, and simplify.

(\frac{3 +9}{2}, \frac{9+(-2)}{2}) = (\frac{12}{2}, \frac{7}{2}) = (6, 3.5)

Therefore, the midpoint between points H and J is choice D, (6, 3.5).

3 0
3 years ago
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