Answer:
a) Option C) The score was 2.49 standard deviations higher than the mean score in the class.
b) 2.3%
Step-by-step explanation:
a) We are given that the distribution of test grades is a bell shaped distribution that is a normal distribution.
Formula:
Option C) The score was 2.49 standard deviations higher than the mean score in the class.
b) The z-score for a particular score is -2.
We have to evaluate
P(z < -2)
Calculating the value from normal z-table.
Thus, 2.3% of of the class scored lower than my friend.
X = -10
Because it is the "absolute value" of "10"
Here's why
-X - 10 = 0, right ?
So, now we have to add a positive 10 to each of our sides to get one step closer to our answer
-X + 10 = 0 ⬅️cancel this
0 + 10 = 10 ⬅️keep this
We can multiply by a negative 1 (-1 )
10(-1) = -10
0(-1) = -0
So that's how we found out that X = -10
70 x 55 = 3850 hope this helps
3 is thousands
8 is hundreds
5 is tens
0 is units
Answer:
Angle K is congruent to itself, due to the reflexive property
Step-by-step explanation:
Given: ΔLKM is similar to ΔNOM
To find: statement that is not used to prove that ΔLKM is similar to ΔNOM
Solution:
Two figures are said to be congruent if they have same shape and same size.
Two figures are said to be similar if they have same shape but different size.
If two figures are similar then their corresponding angles are equal.
As ΔLKM 
ΔNOM,
So, statement that can be used to prove that ΔLKM is similar to ΔNOM is ''Angle K is congruent to itself, due to the reflexive property''
