I worked up and down btw
1. Yes
2. No
3. No
4. No
5. No
6. Yes
Answer:
Let the two nos. Be x and y
xy = -32
x - y = -12
(x-y)^2 = (x+y)^2 - 4xy
144 = (x+y)^2 + 128
16 = (x+y)^2
Therefore x+y = +4, -4
When x+y = +4, x-y = -12
x = -4, y = 8
When x+y = -4, x-y = -12
x= -8, y = 4
Hope this helps!
Answer:
y=-2-3x
Step-by-step explanation:
Point-slope form: y-y1=m(x1-x)
In this problem, -2 is x1 and 4 is y1.
As always, m is the slope: 3.
Hence, plug these values into the equation.
y-4=3(-2-x)
Distribute the 3: 3(-2-x)= -6-3x
Now we have y-4=-6-3x
Because we want the y by itself, add 4 to each side of the equation.
y-4=-6-3x
+4 +4
y=-2-3x
Answer:
2/3 hours or 40 mins.
Step-by-step explanation:
No. of trees planted by David = 11
No. of hours worked by David to plant 11 trees = 7 1/3 hours = (7*3 + 1) /3 = 22/3
It takes him about the same amount of time to plant each tree
let time taken to plan 1 tree be x
then time taken to plan 1*11 tree = 11*x
But, given that total time taken is 22/3 hours
thus,
11x = 22/3 hours
x = 22/(3 *11) = 2/3
Thus, it took 2/3 hours to plant each tree.
As 1 hour has 60 minutes
Time taken in minutes to plant 1 tree = 2/3 *60 mins = 40 mins
