(6a*5) + (6a*d)
30a + 6ad
30a + (6a*d)
So, 1, 2 and 4 are correct!
Answer: i3
Step-by-step explanation:
The rock lands on the graound when h(x) = 0:
Dividing both sides by -3 gives
Taking the square root of both sides gives
![x-4=\sqrt[]{\frac{79}{3}}](https://tex.z-dn.net/?f=x-4%3D%5Csqrt%5B%5D%7B%5Cfrac%7B79%7D%7B3%7D%7D)
Finally, adding 4 to both sides gives
![x=\sqrt[]{\frac{79}{3}}+4](https://tex.z-dn.net/?f=x%3D%5Csqrt%5B%5D%7B%5Cfrac%7B79%7D%7B3%7D%7D%2B4)
converting to a decimal form gives
Hence, the rock lands on the ground after 9.1 s.
1. X1 Y1. X2, Y2
(-1,-6). ( -4,3)
Formula for slope which is m
Y2 -Y1 divide by X2-X1
3- -6/ -4 - -1= 9/-3= -3
So M = -3
Y=mx+b
-6= -3 (-1) +b
-6= 3+b
-3=-3
-9=b
Answer Y= -3x-9
2. X, Y
(-5,13)
Y=mx+b
13= 10+b
-10=-10
3=b
Answer C y= mx+b
y=-2x+3
3. (X1,Y1). (X2,Y2)
(3,-4). (5,-6)
Formula for m which is slope y2-y1 / x2-X1
-6- -4 / 5-3 = -2/2= -1 so m = -1
X, Y
(3,-4)
Y=mx+b
-4= -1(3)+b
-4= -3+b
+3=+3
-1. = b
Y= m x+b
-4= (-1) 3 +b
-4= -3. + b
+3= +3
-1. = b
Answer A y= -1x-1
