The standard form of linear equations is Ax + By = C where A and B ≠ 0, and A is non-negative.
Therefore, the correct answer is A) 6x - 7y = 8
Answer:
b. 0.80
Step-by-step explanation:
The probability distribution means that we have these following probabilities:
0.05 probability of having a loss of $100.
0.15 probability of having neither a loss nor a profit.
0.30 probability of a profit of $200.
0.40 probability of a profit of $300.
0.10 probability of a profit of $400.
On a given day, the probability the bakery will have a profit of $200 or more is
Either 200, 300 or 400.
Looking at it's probabilities;
0.3 + 0.4 + 0.1 = 0.8
So the correct answer is:
b. 0.80
S + a = 722
s = 72 + a
(72 + a) + a = 722
2a + 72 = 722
2a = 722 - 72
2a = 650
a = 650/2
a = 325 <== adults
s = 72 + a
s = 72 + 325
s = 397 <== students