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2 years ago

Equation with a slope of -2 and point of (4,7)

Mathematics

2 answers:

MArishka [77]2 years ago

4 0

The answer is y=-2x+15

s344n2d4d5 [400]2 years ago

3 0

Answer:

y=-2x+15

Step-by-step explanation:

So first we can write it in point slope form.

That is y-y1=m(x-x1)

y1 is the y coordinate

m is the lope

x1 is the x coordinate

This means that the equation is:

y-7=-2(x-4)

We can then convert it to slope intercept form which is

y=mx+b

y-7=-2x+8

y=-2x+15

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LuckyWell [14K]

This question was already asked so I will put the answer here.

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2 years ago

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iragen [17]

Answer:

864ft^3

Step-by-step explanation:

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2 years ago

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Write the equation ∣4−r/3∣=7 as two separate equations, and enter each equation in its own answer box below. Neither of your equ

Naddik [55]

Answer:

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2 years ago

What is the 9th term of the geometric sequence 4, −20, 100, …?

sveta [45]

First, we are going to find the common ratio of our geometric sequence using the formula: $r= \frac{a_{n}}{a_{n-1}}$ . For our sequence, we can infer that $a_{n}=-20$ and $a_{n-1}=4$ . So lets replace those values in our formula:
$r= \frac{-20}{4}$
$r=-5$

Now that we have the common ratio, lets find the explicit formula of our sequence. To do that we are going to use the formula: $a_{n}=a_{1}*r^{n-1}$ . We know that $a_{1}=4$ ; we also know for our previous calculation that $r=-5$ . So lets replace those values in our formula:
$a_{n}=4*(-5)^{n-1}$

Finally, to find the 9th therm in our sequence, we just need to replace $n$ with 9 in our explicit formula:
$a_{9}=4*(-5)^{9-1}$
$a_{9}=4*(-5)^{8}$
$a_{9}=1562500$

We can conclude that the 9th term in our geometric sequence is <span>1,562,500</span>

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2 years ago

mrs. McCain had 3 folders. each folder had the same amount of papers in it. mrs. phillips gave mrs. McCain 7 more papers she end

Feliz [49]

Each folder must have 10 pages
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2 years ago