Answer:
Step-by-step explanation:
First you would plot the points- (0,2), (1,4), (2,6), (3,8)
Then if the points make a straight line when you connect them then it makes it a linear equation
To know if it is proportional or not you take the y points and put them over their x points, and if all of them end up with the same number than it is proportional
2/0=0, 4/1=4, 6/2=3, 8/3=8/3, therefore it is not proportional
Answer:
the answer is A
Step-by-step explanation:
Answer:-2
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
Step 2: Subtract 78x from both sides.
Step 3: Add 30 to both sides.
Step 4: Divide both sides by -30.
x=−2
Answer:
6.83 units
Step-by-step explanation:
Let the height of the original pyramid be represented by h. Then the cut off top has a height of (h -2). The scale factor for the area is the square of the scale factor for height, so we have ...
(height ratio)^2 = 1/2
((h -2)/h)^2 = 1/2
(h -2)√2 = h . . . . . . square root; multiply by h√2
h(√2 -1) = 2√2 . . . . add 2√2 -h
h = (2√2)/(√2 -1) ≈ 6.8284 . . . units
The altitude of the original pyramid is about 6.83 units.
Yes.
The definition of congruent circles is two circles with equal radii. Because the diameter is twice the radius, it is true that the diameters of two congruent circles are the same length.