If a yard is 3 feet long, how many inches are in a yard?
1 answer:
You might be interested in
Answer:
The solution is (-2,-11)
Step-by-step explanation:
The given system is ;
Multiply through by 2y.
Expand;
Also we have;
Put equation (1) into (2)
for
Cross multiply;
Divide through by -8.
x=-2
Put x=-2 into equation (1).
y=6(-2)+1
y=-11
The solution is (-2,-11)
Answer:
0.3174
Step-by-step explanation:
Given that a manufacturer makes integrated circuits that each have a resistance layer with a target thickness of 200 units
These thickness measurements, X, are approximately normally distributed with a mean of 200 units and a standard deviation of 12 units.
Sample size n = 16
Sample mean will follow N(mu = 200, std error = 12/sqrt 16)
i.e. : N(200, 3)
Required probability
= probability that the mean thickness in these 16 measurements xˉ is farther than 3 units away from the target value
=