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GREYUIT [131]
3 years ago
14

G based on the empirical rule, what percent of the observations will lie between plus or minus two standard deviations from the

mean?
Mathematics
1 answer:
ludmilkaskok [199]3 years ago
7 0
Based on the empirical rule, and assuming that the curve is normal, 95% of the observations lie between plus and minus 2 standard deviations of the mean.
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A leaky pool loses 2 1/4 inches of water eachday. Jermain and mildred are asking to determine the change in the amount of water
inessss [21]

Answer:

Over 5 days, the pool loses 11\frac{1}{4} inches of water.

Step-by-step explanation:

Since the leaky pool is losing water at a rate of 2\frac{1}{4} inches of water each day, than we can find the amount of water the pool has lost over 5 days, by either adding 2\frac{1}{4} five times, or just multiplying 2\frac{1}{4} by 5:

2\frac{1}{4} x \frac{5}{1} =\frac{9}{4} x\frac{5}{1} =\frac{45}{4} =11\frac{1}{4}

So, the total amount of water lost over 5 days is 11\frac{1}{4} inches.

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3 years ago
Find the value of x in the isosceles triangle shown below.
dybincka [34]

Answer:

x=8

Step-by-step explanation:

This isosceles triangle is composed of two right triangles with sides 8,\sqrt{80} , and y

As we have two sides of a right triangle, we can find the third using the Pythagorean Theorem

(\sqrt{80} )^2=8^2+y^2\\\\80=64+y^2\\\\y^2=16\\\\y=4

As this is an isosceles triangle, these two right triangles are equal, this means that x=2y

Therefore, x=2(4)=8

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3 years ago
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Answer:

No, not a function

Step-by-step explanation:

Functions cannot have two or more same domain and different range. (3,3) and (3,9) have same domain and different range.

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