Answer:
(2,-3)
Step-by-step explanation:
2x+2y=-2
3x-2y=12
Add these two equations together to eliminate y
2x+2y=-2
3x-2y=12
-----------------
5x = 10
Divide by 5
5x/5 = 10/5
x = 2
Now we need to find y
2x+2y = -2
2(2) +2y = -2
4+2y = -2
Subtract 4 from each side
4-4 +2y = -2-4
2y = -6
Divide by 2
2y/2 = -6/2
y = -3
Answer:
$920
Step-by-step explanation:
Let be the principle, the simple interest and the rate. For the variation,
where is the constant of proportionality.
From the question, a principal of $1500 at 5% yields am interest of $375. Using these values in the expression for above,
Thus, the relation becomes
When $2300 and 8%,
$920
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Answer: 0.0475
Step-by-step explanation:
Given : A firm’s marketing manager believes that total sales X can be modeled using a normal distribution.
Where , Population mean :
Standard deviation :
To find : Probability that the firm’s sales will exceed $3 million i.e. $ 3,000,000.
∵
Then , for x= 3,000,000
Then , the probability that the firm’s sales will exceed $3 million is given by :-
Hence, the probability that the firm’s sales will exceed $3 million = 0.0475