1/4x^2 = -1/2x + 2.....multiply everything by 4
x^2 = -2x + 8
x^2 + 2x - 8 = 0
(x + 4)(x - 2) = 0
x + 4 = 0
x = -4
x - 2 = 0
x = 2
solutions are : x = -4 or x = 2
Answer:
The set of numbers 3 in, 4 in, and 5 in can form a triangle. a) is correct
Explanation:
A triangle is possible to be drawn only if the sum of the lengths of any two sides is greater than the length of the third side.
a) Is correct.
Testing all the posible combinations: 3+4>5, 4+5>3, 3+5>4. True. Hence, Option a is the correct choice,
b) Is incorrect
Since 1+7>8 is false, this choice is not correct
c) Is incorrect
Since 3+5>9 is false, this choice is not correct
Answer:
20/88=.227
Step-by-step explanation:
The experimental probability of a situation can be found by dividing the total amount of times outcome a happened by the number of times outcome b happened. A good example of this i flipping a coin.
<span>I believe in this item, we are asked to determine how many 5's should be added together in order to form 100. This is calculated by dividing 100 by 5. The answer by completing the operation would be equal to 20. Hence, the answer is 20. </span>