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2 years ago

Review the graph. Which function represents the graph?

Mathematics

1 answer:

Lilit [14]2 years ago

6 0

Answer: C

Step-by-step explanation:

Since y = 0 at x=3pi/2, we know that this is a cosine graph.

So to determine if its -cos or cosine, we can test the pt (0, 1).

Since cos(0)=1 whereas -cos(0)=-1, the answer is y=cos(x).

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3 years ago

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What is the answer to 10x72

Vesna [10]

Seven Hundred Twenty is the correct answer.

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3 years ago

find an equation of the line passing through the point (-4,-6) that is parellel to the line y=-2/9x-1

ryzh [129]

The equation of the line passing through the point (-4,-6) in slope intercept form is:

$y = \frac{-2}{9}x -\frac{62}{9}$

Solution:

Given that we have to write the equation of the line passing through the point (-4,-6) that is parallel to the line y=-2/9x-1

The equation of line in slope intercept form is given as:

y = mx + c ---------- eqn 1

Where, "m" is the slope of line and "c" is the y intercept

Given equation of line is:

$y = \frac{-2x}{9} -1$

On comparing the above equation with eqn 1,

$m = \frac{-2}{9}$

We know that slopes of parallel lines are equal

Thus slope of line parallel to given line is also $\frac{-2}{9}$

Now find the equation of line with slope $\frac{-2}{9}$ and passing through (-4, -6)

$\text{Substitute } m = \frac{-2}{9} \text{ and } (x, y) = (-4, -6) \text{ in eqn 1}\\\\-6=\frac{-2}{9} \times -4+c\\\\-6 = \frac{8}{9}+c\\\\-6 = \frac{8+9c}{9}\\\\-54 = 8+9c\\\\9c = -62\\\\c = \frac{-62}{9}$

$\text{Substitute } m = \frac{-2}{9} \text{ and } c = \frac{-62}{9} \text{ in eqn 1}\\\\y = \frac{-2}{9}x -\frac{62}{9}$

Thus the equation of line is found

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3 years ago

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fgiga [73]

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3 years ago

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15 PTSS EASY I PROMISE FOR BRAINIEST!!!The distance from Newtown to Oldtown on the highway is (6x2 + 2x – 2) miles. Using the ba

devlian [24]

For this case we have to subtract the two distances (subtract the polynomials) and the difference will be given by the shorter miles of the second route.

$6x ^ 2 + 2x-2- (5x ^ 2-8x-6) =$

Taking into account that:

$- * + = -\\- * - = +\\6x ^ 2 + 2x-2-5x ^ 2 + 8x + 6 =$

Adding similar terms: $6x ^ 2-5x ^ 2 + 2x + 8x-2 + 6 =\\x ^ 2 + 10x + 4$

So, the correct option is C

ANswer:

Option C

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3 years ago