Answer:
B
Step-by-step explanation:
Use the elimination method by adding the equations together:
5x - 2y = 4
3x + 2y = 12
---> 8x = 16
x = 2
Answer:
x=-1
Step-by-step explanation:
#3. the probability of spinning "rock" is 25% or 1/4 so we can use this probability to predict the number of times we would expect to get "rock" in 80 spins as follows:
25% of 80 = .25(80) = 20 So how likely is it we spin 20 'rock' out of 80 spins? At 25%, not very likely..
#4.
A. True
B. True
C. False, the theoretical probability of make make using the spinner is

or about 56%
Answer:
-22
Step-by-step explanation:
1) Substitute x and y into the equation:
-3(4) + 2(-5)
2) Simplify:
-12 + (-10)
= -22
Answer:
u = 1/6
Step-by-step explanation:
<u>1</u> (12u - 2 )= 0
3
3×<u>1</u> (12u-2) =0×3
3
12u -2 =0
<u>12u</u> = <u>2</u>
12 12
u = <u>1</u>
6