Answer:
98
Step-by-step explanation:
Of means multiply and is means equals
20% *x = 28
Changing to decimal form
.20 * x = 28
Divide each side by .20
.20x/.20 = 28/.20
x =140
Now we want to find 70% of 140
70% * 140
Changing to decimal form
.70 * 140
=98
Answer:
hello :
x- intercepts when x = 0 : -4y = -20 so : y = 5
y - intercepts when y = 0 : 5x = -20 so : x = -4
Answer:
36 ft
Step-by-step explanation:
So the proportion of the big triangle is 48:4 or 12:1. So if the small triangle’s height is 3 feet, then 3*12 is 36 feet.
The company has to study 199 machines.
In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean of the set, while a high standard deviation indicates that the values are spread out over a wider range.
It is given that;
Margin of error E = 0.7
Confidence interval 98% = 1-0.98 = 0.02
Standard deviation = 6 hours
Number of MRI machines needed per day n, = [(z alpha/2 * SD)/E]²
Z alpha/2 = 1.645 at alpha = 0.1
Inputting these values into n we have that
[(1.645*6)/0.7]²
= 14.1²
= 198.81 is approximately equal to 199
The company has to study 199 machines.
To know more about standard deviation visit: brainly.com/question/475676
