2 years ago

6. Find the sum or difference. 146 155 a. + 8 8

Mathematics

1 answer:

Ipatiy [6.2K]2 years ago

5 0

19191020202929293994494944

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HDW calculate distance on the coordinate grid?

salantis [7]

Answer:

CD = 10 units

Step-by-step explanation:

Coordinates of the given points are A(2, 14), B(2, 3), C(4, 2) and D(14, 2).

Distance between the two points $(x_1,y_1)$ and $(x_2,y_2)$ is given by the formula,

d = $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Distance between the two points C(4, 2) and D(14, 2) will be,

CD = $\sqrt{(14-4)^2+(2-2)^2}$

= $\sqrt{(10)^2}$

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3 years ago

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Step-by-step explanation:

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2 years ago

Solve the following system of equations. With multiplication <br> 4x– 3y = -11<br> - 7x-8y= 6

Aliun [14]

4x - 3y = -11

-7x - 8y = 6

We need to cancel out one of the variables so let's multiply the first equation by 8 and the second by 3 and aim to cancel y.

32x - 24y = -88

-21x - 24y = 18

Now we subtract,

53x = -106

x = -2

3y = 4x + 11 = 4(-2) + 11 = 3

y = 1

Answer: (x,y)=(-2,1)

Check:

4(-2) -3(1) = -8 - 3 = -11, good

-7(-2) - 8(1) = 14 - 8 = 6, good

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3 years ago