Answer:
A negative number squared is a positive number. Squaring is multiplying a number by its self.
Step-by-step explanation:
X^2 = x * x
Squaring something is just multiplying it by its self.
A negative times a negative = a positive
A positive times a positive = a positive
A negative times a positive = a negative
A positive times a negative = a negative
- * - = +
+ * + = +
- * + = -
+ * - = -
Here is how my 6th grade teacher helped me to remember it:
If something bad (-) happens to a bad guy (-), that is good.
If something good (+) happens to a good guy (+), that is good.
If something bad (-) happens to a good guy (+), that is bad.
If something good (+) happens to a bad guy (-), that is bad.
I hope I helped!
Let me know if you need anything else!
~ Zoe
<span>Find all pairs of consecutive even integers whose sum is greater than 73 but less than 79.
</span>
Answer:
3
Step-by-step explanation:
25 x 3=75
Answer:
1/6 cubic unit
Step-by-step explanation:
Each plane describes the boundary of a triangular pyramid in the first octant. If we consider the x-y plane to be the base, that base will have an area that is 1/2 the product of the x- and y-intercepts. The height of the pyramid will be the z-intercept, so the volume is ...
V = (1/3)Bh = (1/3)((1/2)(x-intercept)(y-intercept))(z-intercept))
= (1/6)(x-intercept)(y-intercept)(z-intercept)
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We can write the equation of each plane in intercept form by dividing by the constant on the right:
x/(x-intercept) + y/(y-intercept) + z/(z-intercept) = 1
1st plane: x/1 + y/1 + z/1 = 1 . . . . . enclosed volume = (1/6)(1)(1)(1) = 1/6
2nd plane: x/1 + y/1 + z/2 = 1 . . . enclosed volume = (1/6)(1)(1)(2) = 2/6
The difference between the volumes enclosed by the planes is the volume of the region between them, so is ...
V = (2/6) -(1/6) = 1/6 . . . . cubic units
_____
We note that the x- and y-intercepts of both planes are the same, so the volume is that of a triangular wedge having an edge on the line x+y=1 in the plane z=0.
Not sure but i feel like its A
