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Neko [114]
3 years ago
9

Explain why it's your answer

Mathematics
1 answer:
vodka [1.7K]3 years ago
3 0
What are you talking about? explain what
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What is the sum of the infinite geometric series? Sigma-Summation Underscript n = 1 Overscript 4 EndScripts (negative 144) (one-
11Alexandr11 [23.1K]

Step-by-step explanation:

∑⁴ₙ₌₁ -144 (½)ⁿ⁻¹

This is a finite geometric series with n = 4, a₁ = -144, and r = ½.

S = a₁ (1 − rⁿ) / (1 − r)

S = -144 (1 − (½)⁴) / (1 − ½)

S = -270

If you wanted to find the infinite sum (n = ∞):

S = a₁ / (1 − r)

S = -144 / (1 − ½)

S = -288

8 0
4 years ago
Read 2 more answers
Please anwser and show a explanation
const2013 [10]

Answer:

3x + 2y is <to 30

(the second answer)

Step-by-step explanation:

So basically the x is going to be the first thing mentioned, so roses, which are 3$. 3x. Carnations are going to he 2nd and so therefore represented by Y. 2y.

3x + 2y (you're adding them)

It says she does not want to spend more than 30$ and so because there is no less than or equal to sign, it would be the first answer.

4 0
3 years ago
What is a formula for the nth term of the given sequence?<br> 180, -240,320...
Semmy [17]

Answer:

Tn=T1+(n-1)*d

Step-by-step explanation:

Tn is the nth term

T1 is the first term of the sequence

n is the nth term as well

d is the common difference

8 0
3 years ago
PLease help im literally having a mental breakdown
Nina [5.8K]

Answer:

a) X = 65°

b) Y = 71°

c) Z = 44°

Step-by-step explanation:

a) X is a vertical angle with the one marked 65°, so has that same measure.

b) Y is an opposite interior angle with the one marked 71° where the transversal between angles Y and Z crosses the parallel lines. That makes it have the measure 71°.

c) Z is the third angle of a triangle with the other two angles being 65° and 71°, so it is 180° -65° -71° = 44°. (The sum of angles of a triangle is 180°.)

7 0
3 years ago
Summer homework, need help
Nataliya [291]

Answer:

5,2,3

Step-by-step explanation:

I don't really know what to say. Im in midd school and I saw this before.................

6 0
2 years ago
Read 2 more answers
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