The simple way of calculating a perimeter is to add all of the sides.
For a rectangle this would equal 2 x length + 2 x width
P = 2(6x + 3) + 2(-2x - 5)
= 12x + 6 - 4x - 10
= 8x - 4
At a higher level both the length and width must be greater than zero (= zero is a trivial rectangle)
6x + 3 > 0
6x > -3
x > -0.5
-2x - 5 > 0
2x + 5 < 0 (multiplying by -1 reverses the inequality)
2x < -5
x < -2.5
This rectangle cannot exist as x cannot be < -2.5 and > -0.5 at the same time!
Y = -9x is proportional because its in the format y = kx
if you graph this equation youll see that it is a straight line that passes through the origin
i hope this helps!!
Answer:
The scores are between 50 and 90
Step-by-step explanation:
When we say middle 95%, we means that this value falls between 2 standard deviations of the mean i.e
μ ± 2σ
Hence,
mean of 70 and a standard deviation of 10
μ ± 2σ
μ - 2σ
70 - (2 × 10)
= 70 - 20
= 50
μ + 2σ
= 70 + (2 × 10)
= 70 + 20
= 90
It would be a ray, because it’s continually moving in one direction.
A line is doesn’t have any endpoint and it goes forever in both directions.
A point is just a dot.
A line segment has two endpoints and it doesn’t go forever in either direction.
A plane is a flat surface that goes continually in both directions.
And a ray has one endpoint and continues in one direction, like your laser pointer.
Answer:
4 3/8
Step-by-step explanation:
1 1/4 * 3 1/2
