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3 years ago

7

Find the 6th partial sum of the following geometric series. 1/2, -3/2, 9/2, -27/2

1 answer:

defon3 years ago

6 0

Answer:

243

Step-by-step explanation:

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Write algebraically:seven times the sum of a number and three is at most 23??<br>

Lena [83]

Answer:

7 * x + 3 < 23

Step-by-step explanation:

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5 0

3 years ago

Use the diagram of the right triangle above and round your answer to the nearest hundredth.

Yakvenalex [24]

Answer:

value of a = 6.93 m

hence , (b.)

Step-by-step explanation:

the given triangle is a right angled triangle, so

by using trigonometry.

=》

$\tan(a) = \tan(30) = \frac{1}{ \sqrt{3} }$

and we know,

=》

$\tan(a) = \frac{a}{b}$

so, by above values of tan ( a ) we get,

=》

$\frac{a}{b} = \frac{1}{ \sqrt{3} }$

=》

$\frac{a}{12} = \frac{1}{ \sqrt{3} }$

=》

$a = \frac{12}{ \sqrt{3} }$

=》

$a = 4 \sqrt{3}$

=

=》

$a = 6.93$

hence, a = 6.93 m

4 0

3 years ago

7) A coin is tossed three times, with 'heads' or 'tails' recorded after each toss. The number of possible outcomes for this expe

makkiz [27]

2^3 = 8 outcomes possible.

5 0

3 years ago

Solve the linear system by substitution 3c-2y=16<br> 5x+y=18

andrew11 [14]

It's x or c?
...
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6 0

3 years ago

How many solutions does this linear system have y=2x-5. -8-4y=20

ollegr [7]

Answer:

One solution

Step-by-step explanation:

y = 2x – 5. –8x – 4y = –20. one solution: (–2.5, 0)

4 0

3 years ago