The formula for the discriminant is b^2-4ac. The formula you wote is in the form of
ax^2+c=0, so first, you need to bring that -2 to the left. When you do that, you get (the original equation would be ax^2+bx+c but you have no bx.)
3x^2-8
So, since there's no b, it would be
b^2-4ac
0^2-4(3)(-8
-12 x -8
96
Answer:
102
Step-by-step explanation:
papa math will help you
x−3
9
=11
Step 1: Multiply both sides by 9.
x−3
9
=11
(
x−3
9
)*(9)=(11)*(9)
x−3=99
Step 2: Add 3 to both sides.
x−3+3=99+3
x=102
Answer:
x=102
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x−3
9
=11
Step 1: Multiply both sides by 9.
x−3
9
=11
(
x−3
9
)*(9)=(11)*(9)
x−3=99
Step 2: Add 3 to both sides.
x−3+3=99+3
x=102
Answer:
x=102
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Back to Algebra Calculator »
Share this page
Share URL:
https://www.mathpapa.com/algebra-calculator.html?q=(x%E2%88%923)%5Cdiv9%3D11
x−3
9
=11
Step 1: Multiply both sides by 9.
x−3
9
=11
(
x−3
9
)*(9)=(11)*(9)
x−3=99
Step 2: Add 3 to both sides.
x−3+3=99+3
x=102
Answer:
x=102
Close Ad
Back to Algebra Calculator »
Share this page
Share URL:
https://www.mathpapa.com/algebra-calculator.html?q=(x%E2%88%923)%5Cdiv9%3D11
the answer is (f/g)(x) = 2(x^2 - 7) + 1
= 2x^2 - 14 + 1
= 2x^2 - 13
Answer:
The exact value of sin A is opp/hyp = -12/13
Step-by-step explanation:
If A is in Quadrant IV then the "opposite side" is negative and the "adjacent side" is positive. Since sec A = hyp / adj = 13 / 5 and since opp^2 + adj^2 must add up to hyp^2, Therefore y = √(hyp^2 - adj^2), or
y = -√(13^2 - 25) = -√144 = 12.
The exact value of sin A is opp/hyp = -12/13
1. Answer:
C. 1050
Step-by-step explanation:
To find the area of a rectangle, it is length * width * height
25 * 7 = 175
175 * 6 = 1050
2. Answer:
C. 8
Step-by-step explanation:
To find the missing dimension of a rectangle, you can easily just divide the total by each dimension
540 divided by 7.5 = 72
72 divided by 9 = 8
3. Answer:
D. 31,400
(31,415.9)
Step-by-step explanation:
The radius of the cylinder is 20
The height of the cylinder 25
πr2h is the formula used to find the volume of a cylinder
