Answer:
k>12
Step-by-step explanation:
distribute -3 into the parenthesis
-3k-21>-57
add 21 on both sides
-3k>-36
divide both sides by -3
k>12
HOPE THIS HELPS!!!
Answer:
45
Step-by-step explanation:
The order in which the items are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

How many possible subsets of 2 items can be chosen from this lot?
Combinations of 2 from a set of 10. So

The mode is a term that is repeated the most.
And the one which is the repeated is 30.
Answer:
-8
Step-by-step explanation:
took the test
Answer:
10. 2x+y
11. x^2-15x+3
Step-by-step explanation:
10. when u add 7x+3y and 4x+4y you will get 11x+7y. 13x+8y minus 11x+7y will be 2x+y
11. when u add 3x^2+7x+1 and x^2-x+1 u will get 4x^2+6x+2. 5x^2-9x+5 minus 4x^2+6x+2 will be x^2-15x+3