Plz answer number 3 thx so much

Y=-1/3x +5 <br> Please thank u

PolarNik [594]

Ok this is a linear equation that is descending and is in slope intercept form

8 0

3 years ago

I need help with this question

Novay_Z [31]

Answer:

$\frac{\sqrt{3} - 1}{2\sqrt{2}}$

$\frac{-(\sqrt{3} + 1)}{2\sqrt{2}}$

$- \frac{\sqrt{3} - 1}{\sqrt{3} + 1}$

Step-by-step explanation:

Given $\frac{11 \pi}{12} = \frac{3 \pi}{4} + \frac{\pi}{6}$

(A) $sin(\frac{11\pi}{12}) = sin (\frac{3 \pi}{4} + \frac{\pi}{6})$

We know that Sin(A + B) = SinA cosB + cosAsinB

Substituting in the above formula we get:

$sin (\frac{3\pi}{4} + \frac{\pi}{6}) = \frac{1}{\sqrt{2}} . \frac{\sqrt{3}}{2} + \frac{-1}{\sqrt{2}}. \frac{1}{2}$

$$ \implies \frac{1}{\sqrt{2}} (\frac{\sqrt{3} - 1}{2}) = \frac{\sqrt{3} - 1}{2\sqrt{2}}$

(B) Cos(A + B) = CosAcosB - SinASinB

$cos(\frac{11\pi}{12}) = cos(\frac{3\pi}{4} + \frac{\pi}{6}})$

$\implies \frac{-1}{\sqrt{2}}. \frac{\sqrt{3}}{2} - \frac{1}{\sqrt{2}} . \frac{1}{2}$

$\implies cos(\frac{11\pi}{12}) = cos(\frac{3\pi}{4} + \frac{\pi}{6})$

$$ = \frac{-(\sqrt{3} + 1)}{2\sqrt{2}}$

(C) Tan(A + B) = $\frac{Sin(A +B)}{Cos(A + B)}$

From the above obtained values this can be calculated and the value is $- \frac{\sqrt{3} - 1}{\sqrt{3} + 1}$ .

3 0

3 years ago

Find x<br><br> 4x^2-4=3x^2-3x

Stolb23 [73]

4

2

−

4

−

(

3

2

−

3

)

=

Answer:

Step-by-step explanation:

5 0

3 years ago

Quadrilateral PQRS, with vertex P(-5, -3), undergoes a transformation to form quadrilateral P′Q′R′S′, with P′ at (5, 3). The typ

Vlad1618 [11]

Answer:

D. 180 degrees about the origin.

Step-by-step explanation:

Let's consider what these transformation choices do.

A. Reflection over the X-axis changes the sign of the Y-coordinate. (-5, -3) becomes (-5, 3).

B. Reflection over the Y-axis changes the sign of the X-coordinate. (-5, -3) becomes (5, -3).

Reflection over both axes changes the signs of both X- and Y-coordinates, so (-5, -3) would become (5, 3). That is, one choice for the desired transformation is "A and B".

C. Translation 2 right and 7 up adds (2, 7) to the coordinates, so (-5, -3) becomes (-3, 4).

D. Rotation 180° about the origin changes the signs of both X- and Y-coordinates, so (-5, -3) becomes (5, 3). This is an appropriate single choice for the desired transformation.

5 0

3 years ago

Read 2 more answers

PLEASE HELP ME!

WITCHER [35]

Answer:

Expressions B, D and E

Step-by-step explanation:

Here, we are to select which of the options is correct.

Let’s put in mind that they bought earn $12 per hour

x represents the number of hours Tina worked this week; the total amount of money she made would thus be x * 12 = $12x

Remembering that she made $46 overtime, the total amount of money she made that we would be $12x + 46

The total amount Tammy made, earning $12 per hour and working for y hours = $12 * y = $12y

The total amount of money both made is thus;

12x + 46 + 12y

= $(12x + 12y + 46)

Now, we have similar expressions in the question;

These are; expression B, expression D and expression E

While expression B is straightforward, the others are not

expression D is gotten by factoring out 12; 12x + 12y + 46 = 12(x + y) + 46

expression E just involved putting what each of the two earned in brackets

8 0

3 years ago