Your friend says that enough information is given to prove that x= 15. Is your friend correct?
1 answer:
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Answer:
B
Step-by-step explanation:
1) Look at the y-intercepts.
The y-intercepts on both equations are the same: 5. That means both equations touch the y-axis at (0,5).
That means we can rule out both A & C.
2) Calculate the rate of change (a.k.a. slope) of f(x).
To do this, we must use two points to find the change of y over the change of x. From the graph, we can use the points (1,2) and (2,-1).
Δy / Δx =
<em>*The little triangles are the Greek symbol delta. They mean change in...*</em>
That means that the slope of f(x) is -3.
3) Figure out the rate of change (a.k.a. slope) of g(x).
To do this, all we have to do is look at the equation. It is written in y = mx + b format where m = slope and b = y-intercept. That means the slope is 5 as in place of "m" there is a 5.
4) The Answer
The answer is B because 5 [the rate of change for g(x)] is greater than -3 [the rate of change for f(x)].
Answer:
275
Step-by-step explanation:
Given that a survey of 391 children given at a local elementary school showed that 150 like chocolate ice cream, 225 like pistachio ice cream, and 116 do not like chocolate or pistachio ice cream.
Total = 391
cholocate ice cream =150
pistchio ice cream = 225
Neither -=116
If we partition universal set into disjoint sets exhaustive
we have A-B, B-A, AB, and (AUB)'
Total = 391
Let n(AB) i.e. likes both be x
Then we have n(A-B) = 150-x and n(B-A) = 225-x
Totalling
no of children who like atleast one kind of ice cream = n(U)-n(AUB)"
= 391-116
= 275