We can solve this problem using discriminant.
x^2-4x-12's discriminant is
(-4)^2-4*-12=16+48 which is clearly larger than 0
This means that it crosses over the axes 2 times.
In case you don't know what discriminant is, its in equation ax^2+bx+c
the discriminant is b^2-4ac.
If its positive it has 2 crosses with x axis, if negative then 0 crosses, if 0 then 1 cross.
Hope this helped at least a little bit :D
Answer:
4.25
Step-by-step explanation:
5-3/4=4.25
sry if im wrong hope this helps
brainliest? please?
Each kid would get five and three are hidden
Answer:
Step-by-step explanation:
1. 5x=100 (since they are vertically opposite angles and vertically opposite angles are always equal)
x=100/5
x=20
2. 3x+39=90 degree (since they are perpendicular they are complementary because perpendicular means 90 degree and in complementary angles sum of two angles is always 90 degree .
x=90-39
3x=51
x=51/3
x=17