Answer:
20x+8+7=-105
20x(8+7)=-105
-15 to both sides 20x=-120
divide by 20 to both sides -120/20=-6
x=-6
Step-by-step explanation:
distributive property
addition property of equality
subtraction property of equality
division property of equality
The value of x, when y is 2 is 3.
Therefore, g^-1 (2) = 3
Let y = 3x - 10, then x = (y + 10)/3
Therefore, h^-1 (x) = (x + 10)/3
(h o h^-1)(x) = h(h^-1(x)) = h((x + 10)/3) = 3((x + 10)/3) - 10 = x.
Therefore, (h•h^-1)(-1) = -1
For the equation Y value is -45.
Answer:
0.3707
Step-by-step explanation:
Mean length = 30.05 inches
Standard deviation = 0.3 inches
We are supposed to find the probability that the average length of a steel sheet from a sample of 9 units is more than 29.95 inches long
Formula :
x= 29.95
Substitute the values :
Refer the z table for p value
p value = 0.3707
So, the probability that the average length of a steel sheet from a sample of 9 units is more than 29.95 inches long is 0.3707
Answer:
y = -3/4x - 2
Step-by-step explanation:
y = -3/4x + b
1 = (-3/4) × -4 + b
1 = 3 + b
-2 = b
b = -2
y = -3/4x -2