I think it might be 5/7 but i’m not 100% certain
The numbers for the first eight beads that r white is 2 white beads. The rule of the pattern is 1,3,1,3,1,3 (its an A,B,A,B pattern) the rule is a b pattern
Answer: A, C, and D
Step-by-step explanation:
Substitute -4 for X and solve
Given:
Ten people:
5 people are 30 years old
3 people are 32 years old
1 person is 31 years old
1 person is 65 years old ⇒Outlier. No included in the next computation.
A.) Mean Age of the remaining 9 people.
Mean = (5(30) + 3(32) + 31) / 9
= (150 + 96 + 31)/9
= 277/9
= 30.77 or 30.80 is the mean age to the nearest tenth.
We need to get the variance before we can solve the standard deviation.
Variance:
1 ⇒ 30 - 30.80 = -0.80 ⇒ -0.80² = 0.64
2 ⇒ 30 - 30.80 = -0.80 ⇒ -0.80² = 0.64
3 ⇒ 30 - 30.80 = -0.80 ⇒ -0.80² = 0.64
4 ⇒ 30 - 30.80 = -0.80 ⇒ -0.80² = 0.64
5 ⇒ 30 - 30.80 = -0.80 ⇒ -0.80² = 0.64
6 ⇒ 31 - 30.80 = 0.20 ⇒ 0.20² = 0.04
7 ⇒ 32 - 30.80 = 1.20 ⇒ 1.20² = 1.44
8 ⇒ 32 - 30.80 = 1.20 ⇒ 1.20² = 1.44
9 ⇒ 32 - 30.80 = 1.20 ⇒ 1.20² =<u> 1.44</u>
sum: 7.56
divide by: <u> 9</u>
quotient: 0.84 Variance
Standard Deviation is the square root of the Variance.
Standard Deviation = √0.84 = 0.92
Answer:
x=6
Step-by-step explanation:
Since the two lines are parallel, the angles are congruent to each other.
-4+14x=80
14x=84
x=6
Hope this helps!