7x ( x + 1.8 ) = 0 → x = 0 or x = -1.8
<h3>Further explanation</h3>
Discriminant of quadratic equation ( ax² + bx + c = 0 ) could be calculated by using :
<h2>D = b² - 4 a c</h2>
From the value of Discriminant , we know how many solutions the equation has by condition :
D < 0 → No Real Roots
D = 0 → One Real Root
D > 0 → Two Real Roots
Let us now tackle the problem!
<u>Given :</u>
<u>Solution :</u>
<h3>Therefore, the solution is x = { 0 , -1.8 }</h3>
<h3>Learn more</h3>
<h3>Answer details</h3>
Grade: High School
Subject: Mathematics
Chapter: Quadratic Equations
Keywords: Quadratic , Equation , Discriminant , Real , Number , Solution , Zero , Root
Answer:
3 and 8
Step-by-step explanation:
3 + 8 = 11
8 - 3 = 5
Statement 1: and are vertical angles
Reason 1: Given
We basically just restate the given information word for word. This is true of any two column proof.
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Statement 2:
Reason 2: and are a linear pair
The term "linear pair" means the angles are adjacent and supplementary (they form a straight line), so this is why the two angles add to 180.
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Statement 3:
Reason 3: and are a linear pair
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Statement 4:
Reason 4: Substitution
Each of the equations formed in statements 2 and 3 above have 180 on the right side, so the left hand sides must be the same
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Statement 5:
Reason 5: Subtraction property of equality
We subtracted the quantity from both sides (they go away)
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Statement 6:
Reason 6: Definition of congruence
If two items are congruent, then they have the same measure. In other words, they are the same.
Answer:
m BC = 100
Step-by-step explanation:
Since the angle is at the center, the arc has the same measurement as the angle
m BC = 100
10x ∠-20
x∠-20/10
x∠-2
this is your answer
hope it helps