Answer:
see below
Step-by-step explanation:
Let's solve your equation step-by-step.
x4−16x2=x2+18
Step 1: Subtract x^2+18 from both sides.
x4−16x2−(x2+18)=x2+18−(x2+18)
x4−17x2−18=0
Step 2: Factor left side of equation.
(x2+1)(x2−18)=0
Step 3: Set factors equal to 0.
x2+1=0 or x2−18=0
x=4.242640687119285 or x=−4.242640687119285
Answer:
x=4.242640687119285 or x=−4.242640687119285
Answer:
(c) Add 3 to 9
Step-by-step explanation:
The order of operations tells you that quantities in parentheses are evaluated first.
Here, that means the first step is finding the sum 3+9.
Answer:
0.0090483
Approximately = 0.00905
Step-by-step explanation:
z = (x - μ)/σ, where
x is the raw score = 3.74
μ is the sample mean = population mean = 4 mm
σ is the sample standard deviation
This is calculated as:
= Population standard deviation/√n
Where n = number of samples = 100
σ = 1.1/√100
σ = 1.1/10 = 0.11
z = (3.74 - 4) / 0.11
z = -2.36364
Using the z score table to determine the probability,
The probability that the average thickness of the 100 sheets is less than 3.74 mm
P(x<3.74) = 0.0090483
Approximately = 0.00905
Step-by-step explanation:
How many people do the intend to invite
Answer: X < 10
Step-by-step explanation:
Multiply by 5 to get the X by itself.
