Answer:
i think it is C sorry if it is wrong.
Step-by-step explanation:
join zoom: 982 6380 2701 and 9H92fF
2(5x + 2)^2 = 48
divide both sides by 2
(5x + 2)^2 = 24
square root both sides to clear the power of two.
5x + 2 = + - sqrt24
subtract 2 from both sides
5x = -2 + - sqrt 24
divide both sides by 5
x = (-2 +-sqrt24)/5 or decimal answers .58 and -1.38
Answer:
Individuals with calcium level 8.7 mg/dL or low are considered with low calcium level and above that are not considered low.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 9.5 mg/dL
Standard Deviation, σ = 0.5 mg/dL
We are given that the distribution of calcium levels is a bell shaped distribution that is a normal distribution.
Formula:
We have to find the value of x such that the probability is 0.05
Calculation the value from standard normal z table, we have,
Thus, individuals with calcium level 8.7 mg/dL or low are considered with low calcium level and above that are not considered low.
x=smaller number
y=larger number
x+y=12
y=3x-6
Let's begin with the first equation...
x+y=12
Let's substitute...
x+(3x-6)=12
4x-6=12
Let's add 6 to both sides as we proceed to isolate x...
6+4x-6=12+6
4x=18
Let's divide both sides by 4...
(4x)/4=18/4
x=9/2=4.5---smaller number
12-4.5=7.5s larger number