Given:
A number is
To find:
The scientific notation of the given number.
Solution:
Scientific notation of a number is the product of a number between 1 to 10 and 10 to the power some integer.
We have,
It can be written as
Therefore, the scientific notation of the given number is 
.
Answer:
Carmen's book by 13 pages.
Step-by-step explanation:
Step one
225-175 to get 50 pages per every 2 night for Amelia
Step two
224- 160 to get 64 pages every 2 night for Carmen
Step 3
Add 225 and 50 to get 275
Step 4
Add 224 and 64 o get 288
Step 5
Subtract 275 from 288 to get 13
Part a: For variable X using z score you have (x-30)/10, replace X for this expression in (a), i mean Z=2+10((x-30)/10) = 2+x-30= put this in the way of z score = (x-18)/1, so the mean is 18 and standard deviation is 1.
Part b: Z=X+Y= (x-30)/10 + (x-20)/8 = solve adding fractions = (18x-440)/80 now divide all the numbers between 18 (because you need to show as z score way) = (x-24.4)/4.4, so the mean is 24.4 and standard deviation is 4.4.
For part c,do the same.
Answer:
C
Step-by-step explanation:
Under a reflection in the y- axis
a point (x, y ) → (- x, y ) , then
A(- 1, 3 ) → A'(1, 3 ) → C
Answer:
32cm^2
Step-by-step explanation:
The surface area is the sum of surfaces of all walls.
The 3 visible walls are 2cm*3cm, 2cm*3cm and 2cm*2cm.
The 3 invisible walls are each identical to the parallell walls.
The surface area is
2 * (2cm*3cm + 2cm*3cm + 2cm*2cm) = 2 * (6cm^2 + 6cm^2 + 4cm^2) = 2 * 16cm^2 = 32cm^2
