Answer:
√13
Yes you are right
Step-by-step explanation:
The law of cos again
BC^2 = 18 + 25 - 2 * 3√2 * 5 cos(45 degrees)
= 13
==>
BC = √13
Answer:
C
Step-by-step explanation:
The figure congruent is the one in Option C.
I think it would be 10x+y because the slope is the amount he spends each month for the streaming service so then it would be 10x because x represent the number of months and then it’s +y because that’s the amount he already spent on the tablet
Axis of symmetry is the x value of the vertex
the x value of the vertex, in form
y=ax^2+bx+c is -b/(2a)
so
y=-5x^2-10x-15
a=-5
b=-10
x value of vertex is -(-10)/(2*-5)=10/-10=-1
x=-1 is axis of symmetry
