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3 years ago

Which relation is a function?

Mathematics

1 answer:

mojhsa [17]3 years ago

8 0

Using the vertical line test, Choice A is the only function

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Yesterday, the movie theater brought in $1,440 in ticket sales and $295.25 in food sales. Today, ticket sales were three-fourths

Mice21 [21]

Answer:

Nina is not correct because 393.5$ less then yesterday's ticket sales.

Step-by-step explanation:

To find total sales she he is not correct because

3 / 4 of 1440 = 1,080$ ticket sales from yesterday

and 295.25 - 33.50 = 261.75$

Therefore, ( 3 / 4 * 1440 ) + ( 295.25 - 33.50 ) = 1,341.75$ sale of today

Ticket from yesterday and today

1,080 - 1,341.75 = 393.5

393.5$ less then yesterday's ticket.

6 0

3 years ago

Read 2 more answers

URGENT!!! please help me with these two problems, and solve with statement-reasoning. Thank you!!!

iren [92.7K]

Answer:

See below.

Step-by-step explanation:

By definition the median of the triangle bisects the base of the isosceles triangle.

We need to prove that the 2 triangles formed by the median are congruent.

If the 2 triangles are ABD and ACD where BD is the median and < ABC is the angle from which BD is drawn.

BD = BD ( the common side)

AD = DC ( because BD is the median).

AB = AC ( because ABC is an isosceles triangle).

So Triangles ABD and ACD are congruent by SSS.

Therefore m < ABD = m < CBD, so BD is the bisector of < ABC.

To prove BD is also the altitude:

Triangles ABD and CBD are congruent as we have just proven. Therefore the

of measure of the base angle ABD = m < CBD . Also they are adjacent angles ( on the same line) so they add up to 180.

Therefore angles ABD and CBD are both right angles and BD is the altitude of triangle ABC.

8 0

4 years ago

Find the constant of proportionality k. Then write an equation for the relationship between x and y

ExtremeBDS [4]

Question:

Find the constant of proportionality k. Then write an equation for the relationship between x and y

$\begin{array}{ccccc}x & {2} & {4} & {6} & {8} \ \\ y & {10} & {20} & {30} & {40} \ \ \end{array}$

Answer:

(a) $k = 5$

(b) $y = 5x$

Step-by-step explanation:

Given

$\begin{array}{ccccc}x & {2} & {4} & {6} & {8} \ \\ y & {10} & {20} & {30} & {40} \ \ \end{array}$

Solving (a): The constant of proportionality:

Pick any two corresponding x and y values

$(x_1,y_1) = (2,10)$

$(x_2,y_2) = (6,30)$

The constant of proportionality k is:

$k = \frac{y_2 - y_1}{x_2 - x_1}$

$k = \frac{30-10}{6-2}$

$k = \frac{20}{4}$

$k = 5$

Solving (b): The equation

In (a), we have:

$(x_1,y_1) = (2,10)$

k can also be expressed as:

$k = \frac{y- y_1}{x- x_1}$

Substitute values for x1, y1 and k

$5 = \frac{y- 10}{x- 2}$

Cross multiply:

$y - 10 = 5(x - 2)$

Open bracket

$y - 10 = 5x - 10$

Add 10 to both sides

$y - 10 +10= 5x - 10+10$

$y = 5x$

6 0

3 years ago

What is the remainder when 3x2 - X - 10 is divided by x - 1? T

zhannawk [14.2K]

Answer:

I believe it is 4.

Step-by-step explanation:

If 3 times 2 equals then add 4 which then would 10. hopefully I am not dumb and did not understand this. I have 5 IQ. :)

8 0

3 years ago

PLEASE HELP VERY IMPORTANT

Mariulka [41]

Answer:

(6, 2)

Step-by-step explanation:

K is at (-2, -3)

<u>Using the transformation equation given for this problem:</u>

(x + 8, y + 5)

(-2 + 8, -3 + 5)

(6, 2)

The answer is the third option.

7 0

3 years ago