Surface area of cubic= 2( lb+bh+hl)
Length= 18 cm
Width= 5 cm
Height= 2cm
The answer is 216 cubic feet. How? All you have to do is multiply every number then divide it by 2. Like this: 2*12*18=432. 432/2= 216 cubic feet.
Answer:
y = -2x - 10
Step-by-step explanation:
Slope intercept form of equation is of form
y = mx+c
where m is the slope of line and c is the y intercept of the line.
Y intercept is point on y axis where the line intersects the y axis.
_____________________________
Given equation
y = -2x +4
comparing it with y = mx+ c
m = -2 , c = 4
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when two lines are parallel, their slopes are equal.
Let the equation of new line in slope intercept form be y = mx + c
Thus slope of of new required line is -2
Thus m for new line is -2.
now, equation of required line : y = -2x+c
Given that this line passes through (-4, -2). This point shall should satisfy equation y = -2x+c.
Substituting the value of (-4, -2) we have
-2 = -2(-4)+c
=> -2 = 8 +c
=> -2 -8 = c
=> c = -10.
Thus , equation of required line is y = -2x - 10.
Answer:
we conclude that the relationship between distance and time is NOT proportional.
Hence, she did not drive at a constant speed.
Step-by-step explanation:
We know that when 'y' varies directly with 'x', we get the equation
y ∝ x
y = kx
k = y/x
where 'k' is called the constant of proportionality.
In our case, the table shows the distance Allison drove on one day of her vacation.
Time (h) 1 2 3 4 5
Distance (mi) 55 100 165 280 250
using the equation
k = y/x
susbtitute y = 55, x = 1
k = 55/1 = 55
substitute y = 100, x = 2
k = y/x
k = 100 / 2 = 50
substitute y = 165, x = 3
k = y/x
k = 165 / 3 = 55
substitute y = 280, x = 4
k = y/x
k = 280 / 4 = 70
substitute y = 250, x = 5
k = y/x
k = 250 / 5 = 50
It is clear that the value of 'k' does not remain constant.
Therefore, we conclude that the relationship between distance and time is NOT proportional.
Hence, she did not drive at a constant speed.
