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3 years ago

Can anyone help me please??:((

Mathematics

1 answer:

Rufina [12.5K]3 years ago

4 0

<h2>The Third table of ordered pairs represents a proportional relationship. </h2>

Explanation:

A proportional relationship is defined as the relationship between two quantities where one is directly proportional to another with a proportionality constant.

For example, y = ax

Here a is the proportionality constant.

This expression shows that y varies directly as x varies.

From the tables mentioned in the below attachment, we can easily say that "Table 3" has the ordered pairs which represents proportional relationship.

Table 3 defines y is directly proportional to x with proportionality constant $\frac{1}{7}$ .

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Answer:

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3 years ago

A washer and dryer cost $869 combined. The washer cost $81 less than the dryer. What is the cost of the dryer?

marysya [2.9K]

W+d=869
w=d-81
plug in
(d-81)+d=869
2d-81=869
+81 both sides
2d=950
÷2 both sides
d=475
dryer cost $475

let's check w=475-81
w=394
475+394=869
869=869
the solution is true :)

7 0

3 years ago

Read 2 more answers

The are of a shaded region is 118 ft squared. Which equation can be- used to find the value of X, in feet?

Triss [41]

Answer:

$x^2+ 18x -130=0$

Step-by-step explanation:

Given

See attachment for diagram

Required

The equation to find x

First, calculate the area of the big rectangle using:

$Area = Length * Width$

So:

$A_1 = (x + 6) * (3x - 2)$

The smaller rectangle

$A_2 = (x - 1) * (2x)$

The difference between this areas give the area of the shaded region.

So:

$A_1 - A_1 = 118$

$(x+6)*(3x-2) - (x-1)*2x = 118$

Open brackets

$3x^2 - 2x + 18x -12 -2x^2 +2x = 118$

Collect like terms

$3x^2 -2x^2- 2x +2x+ 18x -12 - 118=0$

$x^2+ 18x -130=0$

<em>The above equation can be used to solve for x</em>

4 0

3 years ago

Help much appreciated ):

sweet-ann [11.9K]

Answer

Step-by-step explanation:

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7 0

3 years ago