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3 years ago

If a discriminant is negative, then the quadratic has:

Mathematics

2 answers:

Serjik [45]3 years ago

7 0

Step-by-step explanation:

the answer is

........b

vagabundo [1.1K]3 years ago

7 0

Answer:

Answer is most likely to be B, hope this helps, stay safe :)

Step-by-step explanation:

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Five less than 6 times a number is equivalent to 1 less than twice that number?

Bad White [126]

Answer:

Step-by-step explanation:

5 × 6 = 30 - 5 = 25

5 × 2 = 10 - 1 = 9

5 0

3 years ago

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What is the area of this figure?? PLEASE HELP

diamong [38]

Answer:

1410ft²

Step-by-step explanation:

20 * 12 * 2 + [62 * (15 + 12)] =

480 + (62 * 15) =

480 + 930 =

1410ft²

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2 years ago

Simplify the expression ( csc y + cot y ) times ( csc y - cot y ) over csc y

ahrayia [7]

The answer is B hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

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3 years ago

Pls help trig question!!

s2008m [1.1K]

$4\sin^2 x - 3 = 3 \sin x\\\\\implies 4\sin^2 x -3 \sin x -3 =0\\\\\implies 4u^2 -3u -3 =0~~~~~~~~~~~~~~;[\text{Set} ~ \sin x = u]\\\\\implies u = \dfrac{-(-3) \pm \sqrt{(-3)^2 - 4\cdot 4 \cdot (-3)}}{2(4)}~~~~~~;[\text{Apply quadratic formula}]\\\\\\\implies u = \dfrac{3\pm\sqrt{57}}8\\\\\implies \sin x = \dfrac{3\pm\sqrt{57}}8~~~~~~;[\text{Substitute back}~ u = \sin x]\\\\\text{Now,}\\\\\sin x = \dfrac{3+\sqrt{57}}8\\\\\text{No solution for}~ x\in \mathbb{R} ~\text{Since}~ -1\leq \sin x \leq 1\\$

$\sin x = \dfrac{3 - \sqrt{57}}8\\\\\implies x = n\pi + (-1)^n \sin^{-1} \left(\dfrac{3-\sqrt{57}}8\right)\\\\\\\text{ When n = 1,2 and}~ [0,2\pi]},\\\\\\x= \pi - \sin^{-1} \left(\dfrac{3-\sqrt{57}}8 \right)~ \text{and} ~x = 2\pi + \sin^{-1} \left(\dfrac{3-\sqrt{57}}8 \right)\\\\\text{In decimal,}\\\\x= 3.75~~~~ \text{and}~~~ x =5.68$

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2 years ago

4. Select all expressions equivalent to 5 *x+6+ (8x + 24).

KonstantinChe [14]

Answer:

Step-by-step explanation:

6 0

3 years ago

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