Answer:
8+2x and 3(x+4)-(4+x)
Step-by-step explanation:
2(x+4)=2x+8 interchanged to 8+2x
3(x+4)-(4+x) simplified to
3x+12-4-x collect like terms together 3x-x+12-4=2x+8
Make note of the coefficients in the first and fourth equations. They've been conveniently picked so that subtracting one equation from the other eliminates every variable but <em>t</em>. We have
(3<em>r</em> + 2<em>s</em> + <em>t</em> + 2<em>u</em> + 3<em>v</em>) - (3<em>r</em> + 2<em>s</em> + 3<em>t</em> + 2<em>u</em> + 3<em>v</em>) = 7 - 17
-2<em>t</em> = -10
<em>t</em> = 5
Step-by-step explanation:
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Answer:
T = 1.5s
Step-by-step explanation:
Hello,
To find the time the pincone hits the ground, we need to use the equation given.
Note that h = 0 when the pinecones hits the ground.
This question relates to motion under gravity.
h = -16t² + 36
0 = -16t² + 36
Make t² the subject of formula
16t² = 36
t² = 36 / 16
t² = 2.25
Take the square root of both sides
t = √(2.25)
t = 1.5s
The time it takes the pinecone to hit the ground is 1.5s.
Here we're finding the equation of a 'new' line which passes thru (1,3) and is parallel to the orange line. We need the slope of the orange line, which will also be the slope of the new line thru J.
-2 - 1 -3
m = --------- = ------ = -1/2
2-(-4) 6
Then the equation of the new line, in point-slope form, is
y - 3 = (-1/2)(x - 1).
