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3 years ago

I need the equation that passes through this point( and yes its a dif one)

Mathematics

1 answer:

Ber [7]3 years ago

6 0

Answer:

Step-by-step explanation:

this is okay ... use the point-slope formula [y-y1=m(x-x1)] with your given point.. also m is the slope.. which as is.. is undefined.. so just leave it like that.. the teacher is making this too abstract thou.. to make sense

y-2=m(x-(-3))

y-2 = m(x+3)

y-2 = mx +3m

y = mx +3m +2

that's all you could do for now.. until the slope is defined :)

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Find the sum of the first 7 terms of the series. 6-12+24-48+...

Mkey [24]

Answer: 258

Step-by-step explanation:

Since, the sum of GP is,

$S_{n}=\frac{a(r^n-1)}{r-1}$

where r is the common ratio,

a is the first term,

n is the number of term,

Here, series is, 6, -12, 24, -48, _ _ _ _

Which is a GP ( Because there is common ratio in the given consecutive terms )

So, for the above series, a = 6, r = $\frac{6}{-12}=-2$ and n = 7,

⇒ $S_{7}=\frac{6(-2^7-1)}{-2-1}$

⇒ $S_{7}=\frac{6(-128-1)}{-3}$

⇒ $S_{7}=\frac{6(-129)}{-3}$

⇒ $S_{7}=\frac{774}{3}=258$

Thus, the sum of the 7 terms of the given series is 258.

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3 years ago

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Answer:

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Step-by-step explanation:

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