Answer: -0.5c
Step-by-step explanation: multiply -2.5 by 1/5 (0.2) and you get -0/5
Formula : (x - x1)² + (y - y1)² = r²
Given center of the circle at (-10,6) and radius 4,
(x + 10)² + (y - 6)² = 4²
(x + 10)² + (y - 6)² = 16
Answer: (x + 10)² + (y - 6)² = 16
Answer:
D and E
Step-by-step explanation:
f(x) = (x - 3)² - 25
x intercepts occur when y = 0
0 = (x - 3)² - 25
25 = (x - 3)²
±5 = x - 3
x = 8, or -2
A) g(x) = 2x + 2
0 = 2x + 2
x = -1 Nope
B) h(x) = 2x + 6
0 = 2x + 6
x = -3 Nope
C) q(x) = -4x + 11
0 = -4x + 11
x = 11/4 Nope
D) r(x) = -3x - 6
0 = -3x - 6
x = -2 YES
E) w(x) = 3x - 24
0 = 3x - 24
x = 8 YES
Answer:
d. The variance is 9.56 and the standard deviation is 3.09.
Step-by-step explanation:
From the above question, we are given the following data set.
3, 7, 8, 8, 8, 9, 10, 10, 13, 14
a) Mean = 3 + 7 + 8 + 8 + 8 + 9 + 10 + 10 + 13 + 14/ 10
= 90/10
= 9
b) Variance
The formula for sample Variance = (Mean - x)²/ n - 1
Mean = 9
n = 10
Sample Variance =
(3 - 9)² + (7 - 9)² + (8 - 9)² + (8 - 9)² + (8 - 9)² + (9 - 9)² + (10 - 9)² + (10 - 9)² + (13 - 9)² + (14 - 9)² / 10 - 1
= 36 + 4 + 1 + 1 + 1 + 0 + 1 + 1 + 16 + 25/9
= 86/9
= 9.555555556
≈ Approximately 9.56
Variance = 9.56
Sample Standard deviation = √Sample Variance
= √9.56
= 3.0919249667
≈ Approximately 3.09
Answer: 11
Step-by-step explanation:
The sum of 8 and 3
Sum is the same as addition.
Therefore, the equation is 8+3
Solve 8+3
8+3=11