Step-by-step explanation:
y=-3/4 ÷ -4/3
y=+9/16
Answer:
Step-by-step explanation:
Formula is y= mx+b
b= slope intercept which is 3
m is the slope and it is 3/2 = 1.5
so...
y= __x+__
y= 1.5x+ 3
Hope this helped!
Answer:
false
Step-by-step explanation:
Answer:
10 times
Step-by-step explanation:
The lights blink at the same time (if they ever do) every 12 seconds, the least common multiple of the individual times. Then in 120 seconds, they will blink together ...
120/12 = 10
times.
_____
You could count 11 (simultaneous) blinks, if you count the one at the start of a period of 120 seconds and also the one at the end of that period. If you start marking time between (simultaneous) blinks, you will count only 10.
Answer:
74.22% probability that a family of four will spend more than $400.
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:

What is the probability that a family of four will spend more than $400?
This is 1 subtracted by the pvalue of Z when X = 400. So



has a pvalue of 0.2578.
So there is a 1-0.2578 = 0.7422 = 74.22% probability that a family of four will spend more than $400.