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2 years ago

What is the solution of -3x squared minus 2x minus 28 equals zero

Mathematics

1 answer:

Kamila [148]2 years ago

6 0

The answer to the problem that you need help with is -34

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Which measurement is the best estimate for the distance between New York City and Washington, D.C.?:

Aleks [24]

The best estimate would be D: 331 km

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2 years ago

HELP I will give brainlist

prohojiy [21]

Answer:

1. 2+2 = 4

2. 2x +2 = y

3. Terms - 16ab, 5c, 8, 2l, 2w, h, w, l

Coefficients - 16, 5, 8, 2, 2

Constants - 8, h, w, l

4. 2

5. -7

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2 years ago

Write an expression for y more than 2

monitta

Answer:

2 + y

Step-by-step explanation:

all you must do is add y to 2

3 0

2 years ago

Cos(−θ)=√3/3, sinθ<0

Delicious77 [7]

Answer:

$\sin\theta=-\frac{\sqrt{6}}{3}$

Step-by-step explanation:

The given trigonometric equation is $\cos(-\theta)=\frac{\sqrt{3} }{3}$ .

We can either use the Pythagorean identity or the right angle triangle to solve for $\sin\theta$ .

According to the Pythagorean identity,

$\cos^2\theta+\sin^2\theta=1$

Recall that, the cosine function is an even function, therefore

$\cos(-\theta)=\cos(\theta)$

$\Rightarrow \cos(\theta)=\frac{\sqrt{3} }{3}$ .

We substitute this value in to the above Pythagorean identity to get;

$(\frac{\sqrt{3}}{3})^2+\sin^2\theta=1$

$\Rightarrow \frac{3}{9}+\sin^2\theta=1$

$\Rightarrow \sin^2\theta=1-\frac{3}{9}$

$\Rightarrow \sin^2\theta=\frac{6}{9}$

$\Rightarrow \sin\theta=\pm \sqrt{\frac{6}{9}}$

$\Rightarrow \sin\theta=\pm \frac{\sqrt{6}}{3}$

But we were given that,

$\sin\theta\:$ , so we choose the negative value.

$\Rightarrow \sin\theta=-\frac{\sqrt{6}}{3}$

The correct answer is B

7 0

3 years ago

Find the discount and the selling price, when:<br> (ii) the printed price =₹12750, discount= 25/3%

vodomira [7]

Answer:

12,741.66666

Step-by-step explanation:

12750 - 25/3%

= 12,741.66666

3 0

2 years ago