Answer:
2 solutions
Step-by-step explanation:
x^4-6x^2-7=0
Replace x^2 by y
(x^2)^2-6x^2-7=0
y^2-6y-7=0
D=b^2-4ac= (-6)^2-4*1*(-7)= 36+28=64
sqrtD=8
y1=(-b-sqrtD)/2a=-2/2=-1
y2= (-b+sqrtD)/2a=14/2=7
x^2=-1(n0 roots) x^2=7 x=sqrt7 or x=-sqrt7
2 roots
I dont know if its right. it is seven hundred fifty one
Answer:
ok fine 1.3x+4y<10
Step-by-step explanation:
Answer:
Step-by-step explanation:
Ruth's salary is s(j), where s represents salary and j the number of jars she sells.
At the very beginning, she receives $50. Only answer 'd' could be correct.
But also, the equation has the variable part 0.65j, or
$0.65j, which is directly proportional to the unit price of the jars of jelly.
*
Summing up the fixed and variable parts, we get
s = $50 + ($0.65j), or s = $50 + ($0.65/jar)j This is Answer D.
The point of concurrency is the point where three or more
lines, segments, or rays intersect forming a point. Out of the four namely the
Centroid, Incenter, Circumcenter, and Orthocenter, only the <u>Centroid</u> and
<u>Incenter</u> is always located inside the triangle.
Centroid: where the medians intersect
<span>Incenter: where the angle bisectors intersect</span>
