Answer:
0.081,0.2621,0.645,0.919
Step-by-step explanation:
Let X be the average speed of a car driving down freeway
Given that X is normal with mean as 70mph with a standard deviation of 5mph.
To convert to Z score we do
a) the probability that a randomly selected car is driving more than 77mph
b) probability that a randomly selected car is driving between 65 and 69 mph
= 
c) the probability that a randonly selected car is driving between 67 and 77mph
=
d) the probability that a randomly selected car is driving less than 77mph
Answer:
1. 72%
2. 18
3. 25
Step-by-step explanation:
1. 18/25= .72= 72%
2. 9f always means to multiply so .3 times 60= 18
3. work backward so 5/20%= 25
If you would like to solve the equation 1 2/5 * x = 7, you can calculate this using the following steps:
1 2/5 * x = 7
7/5 * x = 7 /*5/7
x = 7 * 5/7
x = 5
The correct result would be 5.
<span>x+yi = <span>8/(<span>4+8i)</span></span></span><span>x+yi = <span>2/(<span>1+2i)</span></span></span><span>x+yi = <span>2/(<span>1+2i) </span></span>× (<span><span>1−2i)/(</span><span>1−2i)</span></span></span><span>x+yi = (<span><span>2−4i) /</span>5</span></span><span><span>x+yi = <span>2/5</span>−<span>4/5</span>i
x= 2/5
y= -4/5i
</span></span>
