No, 47 equals 47, 66 does not equal 67, hence not similar
Answer:F
Step-by-step explanation: im good
Answer:
9x - 2x + 62 = 9x + 24
Number of correct answer each obtained = 19
Step-by-step explanation:
Given that:
Number of correct answers = x
POINTS for correct answers = 9
POINTS for incorrect answers = - 2
SCHOOL A:
Number of correct answers = x
Number of incorrect answers = x
Initial point = 62
Initial point + 9(number of correct answers) + - 2(number of incorrect answers)
62 + 9x - 2x
SCHOOL B :
Number of correct answers = x
Number of incorrect answers = 0
Initial point = 24
Initial point + 9(number of correct answers) + - 2(number of incorrect answers
24 + 9x
Since they end up tied :
School A = School B
62 + 9x - 2x = 24 + 9x
9x - 2x + 62 = 9x + 24
Number of correct answers gotten :
9x - 2x + 62 = 9x + 24
7x + 62 = 9x + 24
7x - 9x = 24 - 62
-2x = - 38
x = 19
Hence, Number of correct answers each obtained = 19
The question is not complete and i have attached. It's the first image.
Answer:
A) The random variables X and Y are not independent
B) E(X) = 5/8 ; E(Y) = 5/8 ; E(X+Y) = 5/4 ; E(XY) = 3/8
C) E(X²) = 7/15 ; E(Y²) = 7/15 ; Var (X) = 73/960 ; Var(Y) = 73/960 ; Cov(X, Y) = - 1/64
D) Var(X+Y) = 29/240
Step-by-step explanation:
I have attached all explanations.
Length of the circumference is 2πr,
corresponding angle is 360°
2πr-360°
x ---150°
x=2πr*150/360=2π*6.48*150/360=17.0 in