3 years ago

−12d+58=38d−1116 what does p=

Mathematics

1 answer:

weeeeeb [17]3 years ago

8 0

Answer:

d= 587/25, d=23.48

Step-by-step explanation:

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Given the sequence:1,-1/3,1/9,-1/27,... Find

CaHeK987 [17]

We can find the following pattern:

$a_1 = 1 = (-1)^0\cdot\dfrac{1}{3^0}$

$a_2 = -\dfrac{1}{3} = (-1)^1\cdot\dfrac{1}{3^1}$

$a_3 = \dfrac{1}{9} = (-1)^2\cdot\dfrac{1}{3^2}$

$a_4 = \dfrac{1}{27} = (-1)^3\cdot\dfrac{1}{3^3}$

We can deduce the generic rule

$a_n = (-1)^{n-1}\cdot\dfrac{1}{3^{n-1}}$

And thus

$a_{15} = (-1)^{14}\cdot\dfrac{1}{3^{14}}$

With this rule, you can compute the 5th, 6th, 7th, 8th, 9th and 10th element and sum them.

6 0

3 years ago

Can someone help me with this? ^_^<br> 4(-3f-4)-9f4(−3f−4)−9f

Iteru [2.4K]

-12f-16+108f^2-+144f-9f
-108f^2+123f-16
I hope that what you need

8 0

3 years ago

Is my answer right? if not break the hard news and give me the right one

timama [110]

Answer:

Yes, they are similar triangles

Step-by-step explanation:

If you make a proportion using vertical side/horizontal side

$\frac{4}{10} =\frac{12}{30} \\$

If you multiply 4/10 by 3/3 you will get 12/30, so the triangles are similar.

5 0

2 years ago

What's the area of this rectangular prism?

Hitman42 [59]

Answer: 146cm²

Step-by-step explanation:

5 0

3 years ago

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A clothing store charges $30 for 12 pairs of socks. A student says that the unit price is $0.40 per pair. What is the error? Wha

yulyashka [42]

Their error is that they divided 12 by 30, instead of 30 by 12 in order to get the price per pair

the correct unit price is $2.50 per pair

2.5 * 12 = 30

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3 years ago

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