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aleksandr82 [10.1K]
3 years ago
14

-3+9-27+81-243+729. Using the sigma notation to write the given sum

Mathematics
1 answer:
IgorC [24]3 years ago
5 0

Answer:

546

Step-by-step explanation:

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Help! problem:<br>5-x=11+x
snow_tiger [21]
The answer is x=-3

5-x=11+x
-11  -11             First subtract 11
-6-x=x          
+x  +x                Now add x to both sides
-6=2x 
~2 ~2                 Finally divide by 2
-3=x                   Your answer is x=-3

7 0
3 years ago
Please help meeeeeeeeeeeeeeeee please
Harman [31]

9514 1404 393

Answer:

  2.1 ft³

Step-by-step explanation:

Put the given radius and height into the volume formula and do the arithmetic.

  V = 1/3πr²h

  V = 1/3(3.14159)(1 ft)²(2 ft) ≈ 2.094 ft³

Rounded to tenths, this is 2.1 cubic feet.

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The picture cuts off your rounding requirements. If it is hundredths, you need to use 2.09 ft³. If it is thousandths, your answer will depend on the value of pi you are asked to use.

4 0
3 years ago
What is the difference between 100 and 10​
Alik [6]

Answer:

90

Step-by-step explanation:

100 - 10 = 90

4 0
3 years ago
Read 2 more answers
Help please fast grade 5 math help extra points to thooese who explain marking brainliest
ipn [44]
7/12 x 4= 28/12 and good luck again
6 0
2 years ago
6.5 + (−2) + 10.5 I could probably do this but its kind of hard to understand. Explain?
elena-s [515]
Hello! Let's work this problem from left to right to make things a bit easier ;)

6.5+(-2) is the same as 6.5-2, since adding a negative is the same as subtracting a positive. 6.5-2=4.5

Now, we have to add 10.5 to 4.5, which gives us the grand total of 15. I hope this helped! Let me know if you need anything else!
6 0
3 years ago
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