Answer:
f(x) = (x+10)^2 - 86
Step-by-step explanation:
- f(x) = x^2 + 20x - 86
- f(x) = x^2 + 20x + 100 - 86 (because (20/2)^2 = 100)
- f(x) = (x+10)^2 - 86
Completing the square means you do (b/2)^2 where b is: a^2x + bx + c.
The correct definition of dependent events is two events are dependent if the outcome of the first event affects the outcome of the second event.
<h3>What are dependent events?</h3>
Two events are dependent if the outcome of one of the event depends on the outcome of the first event. An example of a dependent event is if it rains, the floor would be wet.
To learn more about dependent events, please check: brainly.com/question/13075229
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Combine like terms. Like terms are completely the same excluding coefficients.
6x+5=10
Subtract 5 from both sides
6x=5
Divide bith sides by 6
x=5/6
Final answer: B
60 children tickets and 190 adult tickets were sold.
Step-by-step explanation:
Let the no. of adult tickets sold be 'a'
Let the no. of children tickets sold be 'c'
Total tickets sold = 250
Cost of 1 children ticket = $2.5
Cost of 1 adult ticket = $4
Total money collected= $910
Given that,
a + c = 250
a = 250 - c
4a + 2.5c = 910
Substitute a value
4(250 - c) + 2.5c = 910
1000 - 4c + 2.5c = 910
1000 - 1.5c = 910
-1. 5c = -90
1.5c = 90
c = 90/1.5
c = 60
a + c = 250
a + 60 = 250
a = 190
P=2L+2W
380=2*70+2W
380=140+2W
2W=240
W=120
The dimensions are 70 yd and 120 yd
Hope this helps!
