Answer:
C. -4x - 1
Step-by-step explanation:
Distribute the term outside of the parenthesis, Multiply each term in the parenthesis by the term outside (do not forget to include the negative sign when multiplying);
Simplify,
Answer:
45
Step-by-step explanation:
Given that the number of savory dishes is 9 and the number of sweet dished is 5.
Denoting all the 9 savory dishes by 
, and all the sweet dishes by 
.
The possible different mix-and-match plates consisting of two savory dishes are as follows:
There are 9 plates with 
from sweet plates which are 
There are 9 plates with 
from sweet plates which are 
Similarly, there are 9 plated for each 
and 
Hence, the total number of the different mix-and-match plates consisting of two savory dishes
Answer: No two students ran same distance
Step-by-step explanation:
Given
Stacy ran 
of a km i.e.
Jules ran 
of a km i.e.
Raul ran 
of mile i.e.
So, no two students ran the same distance.
The product of 9 and 12 is 108
Answer:
x^2 -20x + 100
Step-by-step explanation:
How this works is that you multiply each number by every other number, so.
(x+a)(x+b) so you do x times x since the parenthesis multiplies them together. Then you do x times b.
Then you do a times x since a is the next number in the first pair. then you do a times b.
(* is the sign for multiplication for the sake of simplifying it and to be easier than doing something like x x x where you are multiplying x together with x.)
So in the expression (x + a)(x + b) you are basically doing
x * x + x * b + a * x + a * b
In your case, a is = to -10 and b is equal to -10
So your expression would be
x * x + x * -10 + -10 * x + -10 * -10
so x times x is x^2 and x times -10 is -10x You are doing -10 * x twice so it is -20x and -10 times -10 is 100
So the final equation would be x^2 plus -20x plus 100 or
x^2 + (-20x) + 100
which is
x^2 -20x + 100
Hope this helps!
