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bogdanovich [222]
3 years ago
14

The table can be used to determine the solution of equations, 2x − 2y = 6 and 4x + 4y = 28.

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
5 0

Answer:

(5,2)

Step-by-step explanation:

2x-2y=6\\4x+4y=28

Column 1 :

2x-2y=6..........(1)\\4x+4y=28........(2)

Column 2 :

Eqn(1) \times\ 2

4x-4y=12\\4x+4y=28

Column 3 :

Add the equations.

(4x+4x)-4y+4y=12+28\\8x=40

<u>Fourth column : </u>

8x=40\\x=\frac{40}{8}=5

<u>Fift column :</u>

4x+4y=28\\8x=40

<u>Six</u><u>t</u><u>h column :</u>

Substitute x=5.

4\times 5+4y=28\\4y=28-20\\4y=8\\y=2

Hence solution is (5,2).

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For my math it says someone ordered a poster with a height of 2 feet and width of 0.7 feet what is the area of the poster
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STEP-BY-STEP SOLUTION:

Let's solve this problem step-by-step.

As posters are generally rectangular in shape, we will establish the formula for the area of a rectangle which we will be using as displayed below:

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Now let's find the area of the postwr using the above formula.

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Area = height × width

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ANSWER:

Therefore, the answer is:

The area of the poster is 1.4 square feet.

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6 0
3 years ago
What is the distance between z1 = 5 - 2i and z2 = 8 + i?<br><br> 3√2<br> 13.3<br> 2√3<br> 18
LiRa [457]

Answer:

d=2√10

Step-by-step explanation:

The distance between the two points will be given by:

d=√[(x-x1)^2+(y-y1)^2]

point z1=(3-2i) has the coordinates of (3,-2)

point z2=(5-8i) has the coordinates of (5,-8)

thus the distance between them will be:

d=√[(-8-(-2)²+(5-3)²)]

d=√[(-6)²+2²]

d=√(36+4)

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