9. -6xy+2xz
10. b(a-c-3d)
11. -3xy+xz-4xw
also i think that 8 is supposed to be a(10-13)
B=2 :)
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So whenever a question says "of" multiply. So 2/9x90= 180/9= 20. 1/6x90= 90/6= 15. 90-(20+15)=90-35=55.
55 of the books are romance novels. (or 11/18)
Hope this helps!
Answer:
I just graphed it in desmos for you UvU
The second answer is false. The vertex is not (-3, 11). The vertex is (3, 11). I can see that the parabola has a point of (1, 19), and the parabola opens upward, as well as has an axis of symmetry; x = 3.
Hope that helps
Answer:
P( ace) = 1/13
P (< 5) = 3/13
Step-by-step explanation:
There are 4 Aces in a deck of cards, 1 in each suit
P (ace) = number of aces/ total cards
= 4/52 = 1/13
Numbers less than 5: 4 twos, 4 threes, 4 fours =12 cards less than 5 ( since we do not include aces) There are 4 of each card since there is one in each suit.
P ( card < 5) = cards less than 5/ total
=12/52 = 3/13
