(a-4)(a+7) Look at the sign first to indicate what it will be (+ or _) Once you figure that out, factor.
Chebyshev’s Theorem establishes that at least 1 - 1/k² of the population lie among k standard deviations from the mean.
This means that for k = 2, 1 - 1/4 = 0.75. In other words, 75% of the total population would be the percentage of healthy adults with body temperatures that are within 2standard deviations of the mean.
The maximum value of that range would be simply μ + 2s, where μ is the mean and s the standard deviation. In the same way, the minimum value would be μ - 2s:
maximum = μ + 2s = 98.16˚F + 2*0.56˚F = 99.28˚F
minimum = μ - 2s = 98.16˚F - 2*0.56˚F = 97.04˚F
In summary, at least 75% of the amount of healthy adults have a body temperature within 2 standard deviations of 98.16˚F, that is to say, a body temperature between 97.04˚F and 99.28˚F.
1. Work out difference between the two numbers you are comparing and divide the decreased number by using the original number.
2. Multiply by 100
3. If it is negative, then this will indicate that it is a percentage increase. However, if it is positive, it is the percentage decrease,
I hope this helped.
Answer:
<h2>x = -8/3</h2>
Step-by-step explanation:
6x + 20 = -4
subtract 20 from both sides
6x = -16
divide by 2
3x = -8
<h2>x = -8/3</h2>