3 + 4x = 2y - 9
2y = 4x + 3 + 9
2y = 4x + 12
y = 2x + 6
if it's parallel, than if y = ax + b, a = 2 and you need to find b
(4, -4)
x = 4
y = -4
-4 = 2*4 + b
-4 = 8 + b
b = -12
so an equation is:
y = 2x - 12
Answer:
step 3
Step-by-step explanation:
Choice 4, (x,y) (2x,y) I think is the answer, because when you multiply 2 by x, you're expanding the shape
Answer: I am pretty sure the answer is 7.
Step-by-step explanation:
15≥2p+1
subtract 1 from each side to get
14≥2p
divide 2 by each side to get
7≥p
I hope this helped
Answer:
1/10 per sec
Step-by-step explanation:
When he's walked x feet in the eastward direction, the angle Θ that the search light makes has tangent
tanΘ = x/18
Taking the derivative with respect to time
sec²Θ dΘ/dt = 1/18 dx/dt.
He's walking at a rate of 18 ft/sec, so dx/dt = 18.
After 3seconds,
Speed = distance/time
18ft/sec =distance/3secs
x = 18 ft/sec (3 sec)
= 54ft. At this moment
tanΘ = 54/18
= 3
sec²Θ = 1 + tan²Θ
1 + 3² = 1+9
= 10
So at this moment
10 dΘ/dt = (1/18ft) 18 ft/sec = 1
10dΘ/dt = 1
dΘ/dt = 1/10 per sec
