Answer:
s=5 1/4
Step-by-step explanation:
Have a wonderful day
Answer:
The value is 
Step-by-step explanation:
From the question we are told that
The mean of Jo cows is 
The standard deviation of Jo cow is 
The mean of Val cows is 
The standard deviation of Val cows is 
The sample size for both Val and Jo is n = 25
Let assume that the level of significance is 
Generally from the normal distribution table the critical value of 
is
Generally the margin of error is mathematically represented as
Hence margin of error for Jo is
=> 
=>
60 Mi/h is faster than 80 km/h
Answer:
Step-by-step explanation:
-8x + 2y = -4 12x - 3y = 4
y = -3x - 2 y = 4x
sub sub
-8x + 2(-3x - 2) = -4 12x - 3(4x) = 4
-8x - 6x - 4 = -4 12x - 12x = 4
-14x = -4 + 4 0 = 4
-14x = 0 NO SOLUTION
x = 0 ========================
y = -3x - 2 -3 + 2y = 5
y = -3(0) - 2 -4x + y = 10...y = 4x + 10
y = -2 sub
solution is : (0,-2) -3 + 2(4x + 10) = 5
================ -3 + 8x + 20 = 5
3x + 2y = 11 8x + 17 = 5
x + 2y = 9...x = 9 - 2y 8x = 5 - 17
sub 8x = - 12
3(9 - 2y) + 2y = 11 x = -12/8
27 - 6y + 2y = 11 x = -3/2
-4y = 11 - 27
-4y = -16 y = 4x + 10
y = -16/-4 y = 4(-3/2) + 10
y = 4 y = -12/2 + 10
y = -6 + 10
x = 9 - 2y y = 4
x - 9 - 2(4) solution (-3/2,4)
x = 9 - 8
x = 1
solution : (1,4)
