Answer:
X^2 - 49 .
Step-by-step explanation:
(X+7)(X-7)
= X(X-7) + 7(X-7)
= X^2 - 7X + 7X - 49
= X^2 - 49 .
Answer:Message me for full answer
Step-by-step explanation:
Answer:
120, -80, -90
Step-by-step explanation:
Use order of operations to solve each:
(10 − 6)3 ∙ 4(2) + (10 + 2)2
(4)3 x 4(2) + (12)2
12 x 8 + 24
96 + 24 = 120
(8 − 6)5 ∙ 2(-4) + (6 − 8)0
(2)5 x (-8) + (-2)0
10 x (-8) + 0 = -80
(5-2)-5 x 3(2) + (5+2)0
(3)-5 x 6 + (7)0
-15 x 6 + 0 = -90
Answer:
3/91 ; 36/91
Step-by-step explanation:
1) favourable event/ total possibilities * favourable event/ new total possibilities
3/14 * 2/13 = 3/91
2) it is simplier calculate the probability of the opposite event (no balls are blue)
11/14 * 10/13 = 55/91
91 - 55 = 36
final answer 36/91