Answer: A (-2, 1)
see image explanation attached
7x-23+11x+23=180
4x+0=180
4x/4=180/4
X=45
Answer: x=45
Answer:
Step-by-step explanation: the way to find missing anlges are to use trigrometery
Answer:
Choice A
1/17; no, they are dependent events
============================================
Explanation:
There are 13 spades and 52 cards total. So 13/52 = 1/4 is the probability of drawing one spade
If we do not replace the card we pull out, then the probability of another spade is 12/51 since there are 12 spades left out of 51 total.
Multiply the fractions 1/4 and 12/51 to get
(1/4)*(12/51) = (1*12)/(4*51) = 12/204 = 1/17
The two events are not independent because the second event (pulling out a second spade) depends entirely on what happens in the first event (pulling out a first spade). The fact that the probability is altered indicates we have dependent events.
21x+14u-28would be the answer.
