Answer:
The first option
.
Step-by-step explanation:
To have exactly 2 real and two non real solutions, the degree of the polynomial must be a degree 4. Degree is the highest exponent value in the polynomial and is also the number of solutions to the polynomial. This polynomial ha 2 real+2 non real= 4 solutions and must be
. This eliminates the bottom two solutions.
In order to have two real and two non real solutions, the polynomial must factor. If it factors all the way like

This means x=0, 10, -10 are real solutions to the polynomial. It has no non real solutions. This eliminates this answer choice.
Only answer choice 1 meets the requirement.
Answer:
A = 0.5625π or 1.76715
Step-by-step explanation:
A=πr^2
diameter = 1.5ft
radius = diameter/2 = 0.75
A = π(0.75)^2
A = 0.5625π or 1.76715
Answer:
Step-by-step explanation:
Given equation is 2x+y=4 .so slope(m1) = - coefficient of x / coefficient of y= -2/1=-2
- we have slope of the line perpendicular to the other line is m1*m2=-1\
- then slope of the line perpendicular to the line 2x+y=4 is -2*m2=-1\
- then -2/-1=m2 therefore m2 =2 .
Answer:
×=20
Step-by-step explanation:
180-110=70
70+70=140
180-140=40
40÷2=20