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Papessa [141]
2 years ago
5

What is the sum of the first 20 terms of the series below?

Mathematics
2 answers:
Evgesh-ka [11]2 years ago
7 0

the sum of the first 20 terms of the series below is C.

Natalija [7]2 years ago
6 0

Answer:

Step-by-step explanation:

Now to find the sum of first 20 terms, substitute n=20,a=−1 and d=4 in S n = 2n [2a+ (n−1)d] as follows: S 20 = 220 [(2×−1)+(20−1)4]=10[−2+(19×4)]=10(−2+76)=10×74=740 Hence, the sum of first 20 terms is 740.

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Whats the standard deviation of 1,5,7,3,2,9,1
steposvetlana [31]

Answer:

The pattern is see is saying

Step-by-step explanation: 5+2-4-1+7-8

7 0
3 years ago
X and y=540 when X=10, find y when x=1/2
soldier1979 [14.2K]

Answer:

y = 27

Step-by-step explanation:

if x = 10 when y = 540 ,  y = 54x

if x = 1/2 y = 54*1/2 = 27

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4 0
3 years ago
Canada has a population that is about 1/10 as large as the United States. If Canada's population is about 32 millon, about how m
bezimeni [28]
Since 32 mil is 1/10 of the US pop, multiply 32 mil by 10 so you get the 10/10 aka the whole US pop. That means it would be 320,000,000. All you do is add a zero to 32 mil since you multiply by 10. 32 mil originally had 6 zeros. After multiplying, you have 7 zeros.
5 0
3 years ago
Distance between two points (−5,−5) and (-9, -2)
sergey [27]

Answer: 5

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8 0
3 years ago
How to simplify the expression (6+2)2 to the second power-4x3 using order of operations
dimaraw [331]
The answer would be 28.
--
Here's my work:

Remember PEMDAS:
- Parentheses
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Also, remember to always go left to right.

(6+2)^2-4*3
Square everything in the parenthesis.

36+4-4*3
Multiply where you see a multiplication symbol from left to right.

36+4-12
Add.

40-12
Subtract.

28
Done!
--
I hope I was able to guide and help you on this.
4 0
4 years ago
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