Answer:
Yes
Step-by-step explanation:
B is a subset of A because if A= {0,1,2,3,4} and B= {1,2} B is a part of A and B is a smaller version of A
Don't know if this helps but this is how I learned subsets.
Answer:
-3x +8
Step-by-step explanation:
Apparently, you want to simplify the expression. That means you want to "collect terms", or "combine like terms."
"Like terms" are ones with the same variable structure. Here, the three terms in the expression are (-2x), (-x), and (+8). The ones that both have x as a variable are (-2x) and (-x). The way we combine these is to add the coefficients of the variable:
(-2x) +(-x) = x(-2) +x(-1)
= x(-2 -1)
= x(-3)
= -3x
So, the two "x" terms combine to give -3x. The constant term (+8) is not combined with anything. The simplified expression is then ...
-3x +8
_____
<em>Additional comments about writing and combining terms</em>
When math symbols are written next to each other, it means they are multiplied. -2x means (-2) × (x). It can be written several ways, including ...
- -2x
- (-2)x
- x(-2)
- (x)(-2)
- (-1)(2x)
Usually, the coefficient is written in front of the variable. In the above, we have chosen to write the coefficient after the variable so that the expression shows some parallelism with the usual expression of the <em>distributive property</em>:
a(b +c) = ab +ac
x(-2 -1) = x(-2) +x(-1)
If you put 0 in the place of x or y, which every one you choose, it will cancel it or and you can just divide the number next to it by the answer (-20, 20). Take it one step at a time, don't try to do both at the same time.
Since a square is equal on all 4 sides, that means each side would be 5, because 20/4=5
so using the Pythagorean thrm (which we can use since a square has all 90 degree angles)
a=5 b=5 c=?
5^2+5^2=c^2
25+25=c^2
50=c^2 *square root both sides*
c= 7.07
So the answer would be 7.1
3。35 is the farthest away from zero
