3 years ago

10

Mathematics

1 answer:

marta [7]3 years ago

7 0

Answer:

Step-by-step explanation:

1) Multiply the first equation by -3: -6x - 3y = 12

2) Substitute 2x + 12 for -3y in the above equation, obtaining:

-6x + 2x + 12 = 12

Then -4x = 0, and x = 0. Letting x = 0 in the first equation, we get:

0 + y = -4, so y = -4.

The x-value at the intersection of the lines is zero (0).

That intersection is at (0, -4).

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1 year ago

Which expression has a value different from the others?

Alexxandr [17]

Answer:

I think B

Step-by-step explanation:

A. -108+105

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2 years ago

Given points A (1, 2/3), B (x, -4/5), and C (-1/2, 4) determine the value of x such that all three points are collinear

sleet_krkn [62]

Answer:

Step-by-step explanation:

Let B divides AB in the ratio K:1

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$x=\frac{-36*1+11 *\frac{-1}{2} }{11-36} \\x=\frac{83}{50}$

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3 years ago

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What is the sum of the first seven terms of the geometric series where a1 = 10 and r = −2?

lbvjy [14]

Answer:

Step-by-step explanation:

<h3>Given GP with:</h3>

a1 = 10
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<h3>Solution</h3>

<u>Formula of sum:</u>

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<u>Substitute values:</u>

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2 years ago

Hi how are you thanks for helping me out im only writing this to get a badge so yeah bye

aksik [14]

no problem . aight bye

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2 years ago

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