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balandron [24]
3 years ago
12

2x+y=8 x+y=4 Where do they intersect at?

Mathematics
1 answer:
Roman55 [17]3 years ago
5 0

Answer:

{ \bf{2x + y = 8 -  -  - (a)}} \\ { \bf{x + y = 4 -  -  - (b)}} \\ a - b :  \\ x = 4 \\ 4 + y = 4 \\ y = 0 \\ { \tt{they \: intersect \: at \: (4, \: 0)}}

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Ari is designing a patio that will be 20 feet long and 16 feet wide. He makes a scale drawing of the patio using a scale of 1 in
Anna007 [38]

Answer:

80 square feet

Step-by-step explanation:

This time I will get it right for sure!

So first we need to find the area in feet, and then convert it in to inches.

1) Since the patio has the shape of a rectangle, then the formula is:

A = a * b

A = 20 * 16

A = 320 feet

2). Now we have to find the ratio, so:

320 / 4 = 80

So, the answer is

1 square inch to 80 square feet.

Hope this helps))

8 0
3 years ago
Pls help ❤️❤️❤️❤️ it will make my day!
Licemer1 [7]

Answer: (0,-3/5)

Step-by-step explanation: Hope this helps

7 0
3 years ago
Three friends bought 4, 6, and 8 books. The table shows the cost of the books.
Pepsi [2]

Answer:

Option (B) is correct .

The constant of proportionality is 7.5 .

Reason

Let us assume that the number of books be x.

Let us assume that the cost of books be y .

Than

y \propto x

y = kx

Where k is constant of proportionality .

As given

Number of Books 4 6 8

Cost ($) 30 45 60

Thus

when x = 4 , y = 30

Put in the equation y = kx .

30 = 4k

k = \frac{30}{4}

k = 7.5

when x = 6 , y = 45

Put in the equation y = kx .

45 = 6k

k = \frac{45}{6}

k = 7.5

when x = 8 , y = 60

Put in the equation y = kx .

60 = 8k

k = \frac{60}{8}

k = 7.5

Therefore the constant of proportionality is 7.5  i.e option (B) is correct .



7 0
3 years ago
Read 2 more answers
What type of quadrilateral is shown below? What do the symbols on the sides of this quadrilateral tell you? A quadrilateral with
Papessa [141]

The type of quadrilateral shown is called A kite. The symbols on the sides tell us that two pairs of adjacent sides are equal.

<h3>How to Identify a Quadrilateral?</h3>

A quadrilateral is defined as a closed shape and a type of polygon that has four sides, four vertices and four angles.

Now, from the attached quadrilateral shown, we can say that it is called a Kite. This is because a kite is a quadrilateral that has 2 pairs of equal-length sides and these sides are adjacent to each other.

Read more about Quadrilaterals at; brainly.com/question/16941531

#SPJ1

7 0
2 years ago
Write the perimeter of the floor plan shown as an algebraic expression in x
ziro4ka [17]

From the figure, the perimeter is

P = 11 + (x-2) + (11-3) + [(x-2) - (x-11)] + (x-11)

  =  11 + x - 2 + 8 + 9 + x - 11

  = 2x + 15

4 0
3 years ago
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