Answer:
K<-12
Step-by-step explanation:
+ For that, we need the delta negatif.
+ The delta= b^2-4ac=12^2-4(-3)(k)=144+12k<0
Then, 12k<-144 (divise both sides by 12)
we have k<-12
Or an other way:
-3x^2+12x+k=0 (divise both sides by -3)
x^2-4x-k/3=0
x^2-4x+4 -4-k/3=0
(x-2)^2=4+k/3
Now , we need 4+k/3<0, k/3<-4 or k<-12
Hope you understand.
Answer:
B
Step-by-step explanation:
you have four cups that put 55 in it
Answer:
50 miles
Step-by-step explanation:
Answer:
800-80w.
800-80(2)=800-160=640 left in 2 weeks.
800-80(3)=800-240=560
800-80(5)=800-400=400
800-80(7)=800-560=240
800-80(10)= 0. She has 10 weeks until all of her money is gone
Function: 800-80w
Range: 460
10.39 is the measure of angle C.
