Answer:
- 1
Step-by-step explanation:
( x, y ) = ( 2, y )
x = 2
2x - 8y = - 4
Divide 2 on both sides,
( 2x / 2 ) - ( 8y / 2 ) = - 4 / 2
x - 4y = - 2
Substitute x = 2,
2 - 4y = - 2
- 4y = - 2 - 2
- 4y = - 4
y = - 4 / - 4
y = - 1
Answer:
x (is greater than or equal to) 4
Step-by-step explanation:
i hope this helps :)
Answer: 0.7881446
Step-by-step explanation:
Given : Mean :
Standard deviation :
Sample size :
The formula to calculate the z-score :-
For x= 267 dollars
For x= 269 dollars.
The P-value :
Hence, the probability that they have a mean cost between 267 dollars and 269 dollars.= 0.7881446
Answer:
1) It has a y-intercept of 4
2) A, the rate of change represents how fast the boys run every hour.