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Amiraneli [1.4K]
3 years ago
10

Find the 11th partial sum of the summation of negative 7i plus 22, from i equals 1 to infinity.

Mathematics
1 answer:
Alinara [238K]3 years ago
4 0
The answer is -220 
What you do is take -7 and multiply that by (1+2+3+4+5+6+7+8+9+10+11) and then after that add 11 again and multiply it by 22. It would look like this. 

-7 x (1+2+3+4+5+6+7+8+9+10+11) +11 x 22

Simplify that to -7 x 66 +11 x 22

now multiply -7 and 66 to get -462 

-462 +11 x 22 

multiply 11 and 22 

-462 + 242 

and your final answer will be -220 
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tensa zangetsu [6.8K]

3 x 2 = 6. 6 - 2 = 4.

4 = 3(2) - 2.

t = 2

6 0
3 years ago
Find the value of x in the given statement. The diagram is not to scale. Given:  ∠SRT ≅ ∠STR, m∠SRT = 28 and m∠STU = 2x
VikaD [51]
Using the included information, you'd set up an equation:
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4 0
3 years ago
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Vikki [24]

Answer:

225 m³ or 225 cubic meters

Step-by-step explanation:

Actually it has 5 sides, the 2 bases, the 3 lateral faces.

The formula for the volume of a triangular prism is: \frac{h*b*l}{2}

Using the given measurements, we get:

\frac{9*5*10}{2} =\\\\\frac{450}{2} =\\\\225

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3 0
4 years ago
18x - 432 - 18x - 6x² +144
ArbitrLikvidat [17]

Answer:

-6x^2-288

Step-by-step explanation:

18x - 432 - 18x - 6x² +144

Combine like terms

-6x^2+18x-18x-432+144

-6x^2-288

7 0
3 years ago
PLEASE HELP ME SOLVE BOTH<br><br> 30 POINTS!!!
balu736 [363]

Answer:

1) x = 4

2) a square root cannot be equal to a negative value

Step-by-step explanation:

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2) square each side

(√2x + 1)² = 3²

2x + 1 = 9

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x = 4

2) subtract 4 from each side

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8 0
3 years ago
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