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m_a_m_a [10]
2 years ago
5

The points (2, r) and (5, -9) lie on a line with slope – 2. Find the missing coordinate r.

Mathematics
1 answer:
Veseljchak [2.6K]2 years ago
3 0

Answer:

-3

Step-by-step explanation:

5-2 is three

3 times -2 is -6

-9-(-6) is -3

(2,-3)

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In the system of equations below, which variable would it be easiest to solve for? x + 4 y = 14. 3 x + 2 y = 12 The easiest to s
Murljashka [212]

Answer:

<h2>The easiest to solve for is x in the first equation</h2>

Step-by-step explanation:

Given the system of equation, x + 4 y = 14. and 3 x + 2 y = 12, to solve for x, we can use the elimination method of solving simultaneous equation. We need to get y first.

x + 4 y = 14............ 1 * 3

3 x + 2 y = 12 ............ 2  * 1

Lets eliminate x first. Multiply equation 1 by 3 and subtract from equation 2.

3x + 12 y = 42.

3 x + 2 y = 12

Taking the diffrence;

12-2y =42 - 12

10y = 30

y = 3

From equation 1, x = 14-4y

x = 14-4(3)

x = 14-12

x = 2

It can be seen that the easiest way to get the value of x is by using the first equation and we are able to do the substitute easily <u>because the variable x has no coefficient in equation 1 compare to equation 2 </u>as such it will be easier to make the substitute for x in the first equation.

5 0
3 years ago
Calculate the area of area of a rectangular with a base of 10cm and a height of 6cm​
nadya68 [22]

Answer:

<em>60cm²</em>

Step-by-step explanation:

Length = 6cm

Breadth = 10cm

Area of rectangle = l×b

=( 10 ×6)cm

= <u>60cm²</u>

Hope it helps.

8 0
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lilavasa [31]

Answer:

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Step-by-step explanation:

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Setler [38]

Answer:

 

Step-by-step explanation:

8 0
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