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Anvisha [2.4K]
3 years ago
14

30 POINTS!!!!! WILL MARK BRAINLST!

Mathematics
1 answer:
bazaltina [42]3 years ago
3 0

Answer:

Reduction

Step-by-step explanation:

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Pre-algebra :) pls help lol 10 points
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I believe the answer is a
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If x=2, then xy = 2y. which property is illustrated​
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Given the sequence in the table below, determine the sigma notation of the sum for term 4 through term 15
goblinko [34]
a_n=5 \ for \ n=1 \\
a_n=-10 \ for \ n=2 \\
a_n=20 \ for \ n=3

You can see it's a geometric sequence because the ratio is constant (\frac{a_3}{a_2}=\frac{a_2}{a_1}).
The nth term of a geometric sequence:
a_n=a_1 \times r^{n-1}

a_1=5 \\
r=\frac{a_2}{a_1}=\frac{-10}{5}=-2 \\ \\
a_n=5(-2)^{n-1}

It has to be the sum for term 4 through term 15, so n=4 and the number above the sigma is 15.

Your answer:
\sum^{15}_{n=4} 5(-2)^{n-1}
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Write a real world problem for the inequality -3.5 is less than -1.5
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Having a credit balance of -3.5 is less than 1.5
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4. You read an article in your local newspaper about a discussion between the owner of a popular business and a group
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The business owner should be told to angle a spotlight mounted on the roof at the angle of =39°

<h3>Calculation of angle</h3>

The distance of the flagpole from the building = 55ft

The building has the height of = 45ft

The flagpole has the height of = 25ft

The angle can be calculated using the formula;

Tan θ = opposite/adjacent

Where opposite= 45ft

adjacent = 55ft

Tan θ = 45/55 = 0.82

θ = Tan–¹0.82

θ = 39°

Learn more about angles here:

brainly.com/question/25716982

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