Answer:
The number that goes in place of the question mark is 2.
Step-by-step explanation:
Let's solve it!
3x² + 12x - 24 = 0
First we can factor 3 out of each term:
x² + 4x - 8 = 0
Now we'll add 12 to both sides to complete the square:
x² + 4x + 4 = 12
And finish it off:
(x + 2)² = 12
So the answer to the question is 2
Bonus:
We can also now solve this for x:
(x + 2)² = 12
x = √12 - 2
x = 2√3 - 2
x ≈ 2 × ±1.732 - 2
x ≈ 1.464, -5.464
Note that a triangle = 180 degrees, and that a square inside the triangle located in a corner means a right angle or 90 degrees.
The sum of the exterior angle is the addition of the two isolated interior angles:
90 + 53 = u
u = 143
The sum of a straight line is 180 degrees. Subtract 180 with 143
180 - 143 = 37
The measure of the missing interior angle is <u>37 degrees</u>
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Answer:
(-9) still means -9 it doesn't really mean anything thou....but if u have another number besides it then it means to multiply like maybe 2(-9)then it will be -18...... but if it is just (-9) then it doesn't mean anything.....