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3 years ago

Pls answer this pls answer this pls answer this pls answer this pls answer this pls answer this

Mathematics

1 answer:

stepan [7]3 years ago

6 0

Did you not learn to factor?

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PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA POINTS*.. <br> IM GIVING 40 POINTS !! DONT SKIP :((.

Artist 52 [7]

Answer:

y = 2x - 81

Step-by-step explanation:

8 0

2 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 quadrilateral has at least one pair of parallel sides,but cannot be called a parallelogram

timama [110]

I believe it's a trapezoid

5 0

3 years ago

Read 2 more answers

In 687,332,195, how is the value of the three in the ten thousands place related to the value of the 3 in the hundred thousands

olganol [36]

<span>In this case, the value of the first 3 (the ten-thousands) has a value of 30,000. The 3 next to it, in the hundred-thousands place, has a value of 300,000. To compare the two, the 3 on the right has a value one-tenth as much as that on the left.</span>

8 0

3 years ago

Read 2 more answers

the library is 0.9 miles from school. the museum is 0.6 times as far from the school as the library. how far is the museum from

LiRa [457]

Distance between library and school = 0.9 miles
Distance between museum and school = 0.9*0.6 = 0.54 miles

8 0

3 years ago

Read 2 more answers