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3 years ago

A line has the equation x = -8 What is the equation of the line parallel to this line and going through the point, ( -3, -1 )?

1 answer:

4 0

X=-8 is just a vertical line 8 units to the left of the origin.

So a parallel line will also be vertical and as asked it must pass through (-3,-1) so it is:

x=-3

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Square root of 15-x=-3+Square root of 2x+3<br><br> Solve for x

PSYCHO15rus [73]

$
\sqrt{15-x}=-3\sqrt{2x+3}\impliedby \textit{divide by -3}
\\ \quad \\
\cfrac{\sqrt{15-x}}{-3}=\sqrt{2x+3}\impliedby \textit{squares both sides}
\\ \quad \\
\left( \cfrac{\sqrt{15-x}}{-3} \right)^2=(\sqrt{2x+3})^2\implies 
\cfrac{(\sqrt{15-x})^2}{(-3)^2}=(\sqrt{2x+3})^2
\\ \quad \\
\cfrac{15-x}{9}=2x+3\impliedby \textit{multiply both sides by 9}
\\ \quad \\
15-x=18x+27\impliedby \textit{solve for "x"}$

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3 years ago

Of 560 marbles in a bag, 65% are red and the rest are blue. After 28 red marbles are replaced with blue ones, how many blue marb

Kobotan [32]

Answer:

140

Step-by-step explanation:

It's confusing, just believe me.

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3 years ago

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Tju [1.3M]

We can think of this as a right triangle, where the given lengths are the legs.

So, we can solve using the Pythagorean Theorem.

21² + 28² = c²

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3 years ago

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Viefleur [7K]

Answer:

quandrant three is where both intervals will be negative since both x and y are negative. the exact interval is (-6, -6)

Step-by-step explanation:

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3 years ago

Lisa typed a 165-word paragraph in three minutes. Use the ratio table to

JulsSmile [24]

Answer:

1 minute

Step-by-step explanation:

We can see that Lisa types 165 words in 3 mins.

So she types 55 words in 1 minute.

How did I work that out?

Well, all you really do is $\frac {165}{3}$ which is equal to $\frac{55}{1}$ if you divide top and bottom by 3. Anything divided by 1 is itself.

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2 years ago