(a) On my TI-83 Plus calculator I typed in normcdf(-1000, 0.92). The calculator returned the value 0.821. This is approx. 8/10 of the total area under the std normal curve.

(b) I typed in normcdf(-1000, -1.26) and got 0.104

(d) I typed in normcdf(-1000, -1.09) and got 0.138

4 0

4 years ago

What is 2X +7 = 5X -8

inna [77]

Answer:

X=5

Step-by-step explanation:

2X+7=5X-8

7=3X-8

15=3X

5=X

5 0

3 years ago

Read 2 more answers

What is derivate in math ?

Alika [10]

Answer:

The rate of change of a function with respect to a variable.

Step-by-step explanation:

For example: The slope of a constant value (like 3) is always 0. The slope of a line like 2x is 2, or 3x is 3 etc. and so on.

8 0

3 years ago

Exponential form of 81/625

Vesnalui [34]

Step-by-step explanation:

Hey, there!!

you number is: 81/625

We know that,

81=9×9

and

625=25×25

and............................................................

9×9 means 9^2

and 25×25 means 25^2

so, the exponential form of the question is,

= $\frac{ {9}^{2} }{ {25}^{2} }$

{we simply find exponential form by finding their fraction}

Hope it helps...

4 0

3 years ago