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2 years ago

HELP PLZZZZZZZZZZZZZ

Mathematics

2 answers:

Gelneren [198K]2 years ago

8 0

Answer:

I think that the answer is B

Step-by-step explanation: B shows parallel lines but not equal lines

slega [8]2 years ago

4 0

Answer:

i think it is b Because of how the lines are kinda bent

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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

The lunch special at the pizza shop is two slices of pizza for $5.00

maw [93]

30$ is the answer bc if you take 6x 5 = 30

8 0

3 years ago

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13s - r^2; if r = 9 and s = 6

FromTheMoon [43]

Answer:

Step-by-step explanation:

r = 9

s = 6

r^2

= r x r

= 9 x 9

= 81

13s

= 13 x 6

= 108

13s - r^2

= 108 - 81

= 27

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2 years ago

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How many chicks hiding? Explain how you know.

Salsk061 [2.6K]

You can’t really answer this without showing us the the answer you got from item 6

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3 years ago

A student bought a book for $7.50 and a pen.the total cost was $9.50.which of the following can be used to find the cost of the

zloy xaker [14]

D: because if you take 9.50-7.50=2 you would get p=price or the price of the pen.
Hope I helped=)

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3 years ago

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HELP PLZZZZZZZZZZZZZ​

HELP PLZZZZZZZZZZZZZ