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Ainat [17]
2 years ago
14

Please help me somebody!!! I really struggle with this in math class!

Mathematics
1 answer:
Tresset [83]2 years ago
4 0

Answer:

y - 9 = -\frac{4}{3}(x - 3)  

Step-by-step explanation:

Given the points (3, 9) and (9, 1), we must first solve for the slope of the line before proceeding with writing the point-slope form.

In order to solve for the slope (<em>m </em>), use the following formula:

m = (y₂ - y₁)/(x₂ - x₁)

Let (x₁, y₁) =  (3, 9)

     (x₂, y₂) = (9, 1)

Substitute these values into the given formula:

m = (y₂ - y₁)/(x₂ - x₁)

m = (1 - 9)/(9 - 3)

m = \frac{-8}{6} = \frac{-4}{3}

Therefore, the slope of the line, m = -4/3.

Next, using the slope, m = -4/3, and one of the given points, (x₁, y₁) = (3, 9), substitute these values into the following point-slope form:

y - y₁ = m(x - x₁)

y - 9 = -\frac{4}{3}(x - 3)  ⇒ This is the <u>point-slope form</u>.

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Its pretty easy if you are good at math! Please help!
aleksley [76]

Step-by-step explanation:

Explanation:

The trick is to know about the basic idea of sequences and series and also knowing how i cycles.

The powers of i will result in either: i, −1, −i, or 1.

We can regroup i+i2+i3+⋯+i258+i259 into these categories.

We know that i=i5=i9 and so on. The same goes for the other powers of i.

So:

i+i2+i3+⋯+i258+i259

=(i+i5+⋯+i257)+(i2+i6+⋯+i258)+(i3+i7+⋯+i259)+(i4+i8+⋯+i256)

We know that within each of these groups, every term is the same, so we are just counting how much of these are repeating.

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From here on out, it's pretty simple. You just evaluate the expression:

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8 0
3 years ago
Help pleasee 100 points 
IrinaK [193]
<span>
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2. y=3x-8
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5 0
3 years ago
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mihalych1998 [28]

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Step-by-step explanation:

4 0
3 years ago
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Marco needs to climb up to the roof of his house. He placed his ladder so that the bottom of
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Answer:

12.4 feet

Step-by-step explanation:

A ladder placed against the wall forms a right angle triangle

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Adjacent = x

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6 0
2 years ago
WHICH EXPRESSION HAS THE SAME VALUE AS 8-(-4)?
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8 - (-4)     [2 negatives become a positive]

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Your answer is D

8 0
3 years ago
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