There are a few ways to solve this, the simplest of which is probably factoring. Start by finding factors of C (10) that add up to be B (-2).
fac(10) { -10, 1 ; -5, 2 }
Well, there are no factors of 10 that can add to b - so we will use the quadratic formula.
(-b +- sqrt(b^2 - 4ac)) / 2a
where a = 1, b = -2, c = 10
b^2 - 4ac = (-2)^2 - 4(1)(10) = 4 - 40 = -36
-b +- sqrt(-36) / 2a
(2 +- sqrt(-36)) / 2
sqrt(-36)
sqrt(-1 * 36)
sqrt(-1) * sqrt(36)
i * 6
6i
2 + 6i / 2 ; 1 + 3i
2 - 6i / 2 ; 1 - 3i
Solutions: 1 + 3i, 1 - 3i
Answer:
c,e
Step-by-step explanation:
Answer:
line 1 and 2 = Perpendicular
line 1 and 3 = Perpendicular
line 2 and 3 = Parralel
Step-by-step explanation:
Using Desmos to put in the equations, it shows that it's the answer I provided above.
Answer:
Step-by-step explanation:
1a:
3/1. 24/8 simplifies to 3/1.
1b:
18 points. The numerator and denominator of 3/1 can be multiplied by 18 to get 54/18.
2a:
2.45/1. 73.3/30 simplifies to 2.45/1.
2b: I don't really know, someone else might have to answer, but I hope what I did put helps!
Answer:
Angela paid 679,05 for the couch
Step-by-step explanation:
425*70/100=29.750
29.750/100= 297,5
297,5+425=722,5
722,5*6/100=4.335/100=43,45
722,5-43,45=679,05
