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yulyashka [42]
2 years ago
6

How do I write The sum of y and product of 7 and x

Mathematics
1 answer:
Cerrena [4.2K]2 years ago
3 0

Answer:

The product of x and y would be (8)(-1) = -8. by adding the two equations you get 2x = 16 so x = 8. then y = 7 - x = -1. Therefore xy = -8.

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7x²+3y²-28x-12y=-19
grigory [225]
Complete the square for x and y.

7x^2 + 3y^2 - 28x - 12y = -19

7x^2 - 28x + 3y^2 - 12y = -19

7(x^2 - 4x) + 3(y^2 - 4y) = -19

7(x^2 - 4x + 4) + 3(y^2 - 4y + 4) = -19 + 28 + 12

7(x - 2)^2 + 3(y - 2)^2 = 21

\dfrac{(x - 2)^2}{3} + \dfrac{(y - 2)^2}{7} = 1
4 0
3 years ago
Choose the correct equation for the line shown on the graph?
fomenos

<u>Answer:</u>

y=-1/4x-1

<u>How to find the </u><u>slope</u>

To find the slope of the line you need to do the change in y/change in x. This is also known as the rise/run. To do this you count the spaces in between the two points.

In this graph the change in y (rise) is 2. The change in x (run) is 8. Since the line is going down they are negative. The rise/run is -2/8. This can be simplified to -1/4.

Slope: -1/4x

<u>How to find the y-intercept</u>

To find the y-intercept, you need to look at where the line crosses y.

In this graph the line crosses y at -1.

Y-intercept: -1

<u>Final</u><u> </u><u>equation</u><u>:</u><u> </u><u>-</u><u>1</u><u>/</u><u>4x-1</u>

3 0
2 years ago
Elizabeth is spinning a spinner with 5 equal sized sections. The sections are numbered 1, 1, 2, 2, 4. Which statement about the
Vinil7 [7]

Answer:

its d

Step-by-step explanation:

the options can be eliminated by using common sense.

8 0
3 years ago
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Tatiana [17]
He ran for 40 minutes!
4 0
3 years ago
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you make a scale drawing of a banner for school dance .you use a scale of 1 inch ,2 feet what is the actual width of the banner
sashaice [31]

Answer:

6.5

Step-by-step explanation:

you take the sides all added up (which was 13in) and divided it by two

5 0
3 years ago
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