Answer:
Step-by-step explanation:
we have
Solve for x
Multiply in cross
Divide by 33 both sides (Division Property of Equality)
Convert to mixed number
Because the denominators are same, you can just add the numerators.
To find the intersection points, you take x^2 - 4x + 9 = -2x + 17
This gives x^2 - 2x - 8 = 0,
which factorises to (x - 4)(x + 2) = 0, giving the solutions x = 4 or x = -2
From the graph, we can see that x is positive, meaning x = 4, so a = 4.
Substituting x = 4 into y = -2x + 17, we get y = -2(4) + 17 = 9, so b = 9.
a + b = 4 + 9 = 13. The answer is B.
Answer:
<u>Mean = 6.8</u>
Step-by-step explanation:
<u>Given data set :-</u>
{14, 7, 2, 8, 3}
<u>To find :-</u>
Mean
<u>Solving :-</u>
Take sum of given data and divide by number of data pieces.
=> 14 + 7 + 2 + 8 + 3 / 5
=> 34 / 5
=> 6.8
<u>Solution :-</u>
<u>Mean = 6.8</u>
