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3 years ago

Solve by using elimination. Express your answer as an Ordered pair (-x +2y=3 3x-2y=7

Mathematics

1 answer:

MAVERICK [17]3 years ago

4 0

Answer:

(5,4)

Step-by-step explanation:

-x+2y=3

3x-2y=7

Add the like terms( 2y and -2y)(-x and 3x)(3 and 7) together. Do this vertically. 2y and -2y cancel eachother out.

2x=10

Divide both sides by 2

<u>x=5</u>

To find y, substitute x in for y in one of the equations

-5+2y=3

add 5 to both sides

2y=8

Divide both sides by 2

<u>y=4</u>

Check:

-5+2(4)=3
3=3

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Simplify tan9x-tan5x / 1+tan9xtan5x

Wittaler [7]

Answer:

The given expressions simplifies to tan (4x).

Step-by-step explanation:

Here, the given expression is : $\frac{tan9x - tan5x}{1+ tan9xtan5x}$

By TRIGONOMETRIC IDENTITY:

$tan (A-B) = \frac{tanA - tanB}{1+ tanAtanB}$

Putting this identity here, and taking A = 9 x, B = 5 x, we get

$\frac{tan9x - tan5x}{1+ tan9xtan5x} = tan (9x-5x)$

= tan(4x)

Hence, the given expressions simplifies to tan (4x).

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The cost to attend a Wildcat sports event is: Adult: $7 Student: $5 The total sales was $700.

hram777 [196]

Answer:

7x+5y=700

91 student tickets

Step-by-step explanation:

7x+5y=700

7(35)+5y=700

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3 years ago

Which of the following best describes the folding method needed to create a

vivado [14]

Fold tracing paper so that the line segment's endpoints line up with each other , Option D is the correct answer.

<h3>What is a Perpendicular ?</h3>

A perpendicular is a line drawn at 90 degree to a given line or line segment .

Fold tracing paper so that the line segment's endpoints line up with each other.

After drawing a line segment ,

when the end point will be on each other and a crease will be made by pressing the paper , The crease formed will be perpendicular to the line segment.

Therefore, Option D is the correct answer.

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