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Zina [86]
3 years ago
5

Efectuati! (-1)+2+(-3)+4+(-5)+...+(-19)+20 Ajutati-ma, va rog!

Mathematics
1 answer:
alexira [117]3 years ago
8 0

Answer:10

Step-by-step explanation:

2+4+6+.....+20- (1+3+5+7+...+19)=(2-1)+(4-3)+(6-5)+....+(20-19)=1+1+...+1 ( de 10  ori= 10 times)

=10

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What is the height of the cylinder in the diagram? Round your answer to the nearest whole number.
ryzh [129]

Answer:

\mathrm{78.96 \: cm}

Step-by-step explanation:

Cylinder volume formula is \pi r^2h

\pi \times 6^2 \times h=904.78

36\pi \times h=904.78

h=904.78 \div 36\pi

h=78.95695

5 0
3 years ago
Read 2 more answers
Which of the following numbers is rational? Assume that the decimal patterns continue.
Phantasy [73]

9514 1404 393

Answer:

  (c) √49

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Step-by-step explanation:

Square roots of perfect squares are rational, as are repeating decimals.

6 0
2 years ago
I don’t know how to do this
Molodets [167]

Answer:

See attachment

Step-by-step explanation:

8 0
2 years ago
The vertex of this parabola is at (-2, -3). When the x-value is -1, the
valina [46]

Answer:

-2

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7 0
3 years ago
What is the measure of W the parallelogram shown?
nexus9112 [7]

Answer:

148 degrees

Step-by-step explanation:

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what this simply means is that they are supplementary

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X + W = 180

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W = 148 degree

6 0
2 years ago
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