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3 years ago

Pls answer I need help

Mathematics

2 answers:

Lilit [14]3 years ago

7 0

I believe it’s D but I’m not really sure hope this help a little

Akimi4 [234]3 years ago

4 0

The Answer is C

C) Rectangular Pyramid and rectangular prism

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Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?

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2 years ago

Plss help i dont understand

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Here’s the picture.

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S=a1/1-r

valentinak56 [21]

Answer:

Step-by-step explanation:

This is an infinite geometric series. This has a sum of $\frac{a}{1-r}$

Where

a is the first term, and

r is the common ratio (one term divided by the previous term)

Let's figure out the first 2 terms by plugging in n = 1 first and then n = 2 for the series.

First term:

$3(\frac{1}{4})^{n-1}\\=3(\frac{1}{4})^{1-1}\\=3(\frac{1}{4})^0\\=3(1)\\=3$

Second term:

$3(\frac{1}{4})^{n-1}\\=3(\frac{1}{4})^{2-1}\\=3(\frac{1}{4})^1\\=3(\frac{1}{4})\\=\frac{3}{4}$

Let's see the common ratio: $\frac{\frac{3}{4}}{3}\\=\frac{3}{4}*\frac{1}{3}\\=\frac{1}{4}$

Thus we have a = 3 and r = 1/4. Plugging into the formula of the infinite sum, we get:

$s=\frac{a}{1-4}=\frac{3}{1-\frac{1}{4}}=\frac{3}{\frac{3}{4}}=3*\frac{4}{3}=4$

So, the answer is 4

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3 years ago

Company ABC produces widgets. They have found that the cost, c (x), of making x widgets is a quadratic function in terms of x. T

ElenaW [278]

The fittable function seems to be 2 x^2+4 x+7. So C (167)

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2 years ago

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Thanks, this app has helped me a lot.

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