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3 years ago

Using the elimination method, what is x and y ( please explain, I am still slightly confused)

Mathematics

1 answer:

Blizzard [7]3 years ago

7 0

Answer:

(- 4, 1 )

Step-by-step explanation:

Given the 2 equations

x + 3y = - 1 → (1)

- 2x - 3y = 5 → (2)

Adding the 2 equations term by term will eliminate the y- term

- x + 0 = 4

- x = 4 ( multiply both sides by - 1 )

x = - 4

Substitute x = - 4 into either of the 2 equations and solve for y

Substituting into (1)

- 4 + 3y = - 1 ( add 4 to both sides )

3y = 3 ( divide both sides by 3 )

y = 1

solution is (- 4, 1 )

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Long division show your work

IRINA_888 [86]

Step-by-step explanation:

$3x^{4}$ x + $5x^{2}$ x + x - 1

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(((3 • (x3)) + 5x) - $\frac{1}{x}$ ) + 1

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Rewrite the whole as a fraction using x as the denominator :

3x^3 + 5x (3x^3 + 5x) • x

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1 x

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

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4.1 Pull out like factors :

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4 0

3 years ago

Round each value to the nearest 10 and find an estimate of the expression:

GuDViN [60]

Note: to round to the nearest ten, look to the first place digit. if it is 5 or greater, round up, if 4 and lower, round down

124 rounded to the nearest ten = 120
38 rounded to the nearest ten = 40
71 rounded to the nearest ten = 70
207 rounded to the nearest ten = 210

120 + 40 + 70 + 210 = 120 + 110 + 210 = 230 + 210 = 440

440, or C is your answer

hope this helps

3 0

3 years ago

Read 2 more answers

Answer choices 8 6 10

OverLord2011 [107]

Answer is 8
because if you take the side length of 2 and multiple it by all sides

7 0

3 years ago

Point O is the incenter of triangle ABC. What is m

Kaylis [27]

Answer:

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