Answer: 59
Step-by-step explanation:
We have two rules to determine a monomial:
1. a monomial is a number, variable or product of both.
2. they cannot be divided by a variable
checking for each option:
A. 16 (a number) , yes its a monomial.
B. 2x⁻¹
we can simplify it as 2/x
variable in denominator, so its not a monomial.
C. -x⁹ (variable), yes a monomial.
D. 3x^2 (product of number and variable) , yes its a monomial.
E. √x (variable) , yes its a monomial.
F. x² -2 , (two terms) , so not a monomial
<h3>
Answer: 18pi</h3>
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Explanation:
The area 81pi square meters leads to the radius 9 meters
Use the formula A = pi*r^2 to see why this is the case. You plug in A = 81pi and solve for r to get r = 9.
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Once you know the radius, you can determine the circumference C
C = 2*pi*r
C = 2*pi*9
C = 2*9*pi
C = 18pi
The circumference is the perimeter, or distance, around the circle.
Answer:
x1= 79, x2= -83
Step-by-step explanation:
seperate into 2 possible cases
x+2=81
x+2= -81
subtract 2 from both sides
x= 79
x= -83
