2 years ago

How to solve x=2y+7 and 3x-2y=3 by a system of linear equations by substitution

Mathematics

1 answer:

Serga [27]2 years ago

4 0

Answer: X=-2 and Y=-9/2

Step-by-step explanation:

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425 sq. feet will be the wallpaper required

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3 years ago

Manny has read 113 pages of a 158 page book. If he he reads nine pages a day, how many more days will it take manny to finish th

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4 years ago

If tang = and the terminal point determined by 9 is in quadrant 3, then:

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3 years ago

The question is this: Rationalize the denominator and simplify.

Neko [114]

9514 1404 393

Answer:

$\dfrac{20+5\sqrt{3}}{13}$

Step-by-step explanation:

Multiply numerator and denominator by the "conjugate" of the denominator.

$\dfrac{5}{4-\sqrt{3}}=\dfrac{5(4+\sqrt{3})}{(4-\sqrt{3})(4+\sqrt{3})}=\dfrac{20+5\sqrt{3}}{4^2-(\sqrt{3})^2}=\boxed{\dfrac{20+5\sqrt{3}}{13}}$

This is done in different scenarios in order to take advantage of the factoring of the difference of squares. Square root terms and imaginary terms in the denominator can be eliminated in this way.

a² - b² = (a -b)(a +b)

8 0

3 years ago

6/9 = ayuden porfa se los agradeceria

Aleks [24]

<u>Answer</u>

6\9=2\3 that is the answer hopes it helps

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3 years ago