Answer:

Step-by-step explanation:
4x^2+ 12x = 135
D=b²−4ac=122−4(4)(−135)=144+2160=2304=48²

Answer:
8+8/-8-4
16/-12
4/-3
8=4/-3(-8)+b
8*3=12+b
24=12+b
12=b
y=-4/3+12
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
5 is in the middle between each set of numbers making it the intersecting number
Answer:
52
Step-by-step explanation:
when a letter is next to a number like that and they tell u what the letter is u times it so 6x7+10=52 hope this helped :P
Answer:
Option C.
Step-by-step explanation:
In this excercise we have to rest the altitude where they hiked on the second place, to the one were they departed from, in order to know how much they hiked.
So we do:
.
The correct option is option C.