2 years ago

Is -2.7,-9,-30,-100 a geometric sequence ?

Mathematics

1 answer:

Fiesta28 [93]2 years ago

3 0

Hello :
-100/-30 = 10/3
-30/-9 = 10/3
-9/-2.7 = 10/3
<span>geometric sequence the common ratio is : 10/3</span>

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Is n=10 a solution to this equation? n/2 + n = 10

Lubov Fominskaja [6]

Answer:

No, it is not a solution.

Step-by-step explanation:

Substitute 'n' for 10.

$\frac{10}{2} +10=10\\\\5+10=10\\\\\boxed{15\neq 10}$

10 is not the solution to the equation.

Hope this helps.

5 0

2 years ago

Which values for x and y make the statement (x + 5)(y - 6) = 0 true?

-BARSIC- [3]

<span> $||Solving \ for \ x. ||$ </span>

$(x + 5)(y - 6) = 0$

$(x + 5)(y - 6) = 0 :x$

$
x+5=0
 
$ $|Divide \ both \ sides \ by \ y-6|$

$
x=-5
 
$ $|Subtract \ 5 \ from \ both \ sides|$

$||Solving \ for \ y. ||$

$
y-6=0
 
$ $|Divide \ both \ sides \ by \ x+5|$

$
y=6
 
$

$Solution =\ \textgreater \ x = -5, y = 6$

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2 years ago

In 1980, there were 67 new productions on Broadway. In 1987, there were 31 new productions on Broadway. Find the average rate of

AlladinOne [14]

In 1980, there were 67 new productions on Broadway. In 1987, there were 31 new productions on Broadway. Find the average rate of change in the number of new productions.

6 0

3 years ago

Read 2 more answers

Use U = {1,2,3,4,5,6,7,8,9,10}, A = {2,4,5}, B = {5,7,8,9}, and C = {1,3,10} to find the given set. AUB A. AUB = B. the solution

vesna_86 [32]

Answer:B

Step-by-step explanation:

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2 years ago

Find the standard form of the equation of the parabola with a focus at (0, -2) and a directrix at y = 2.

anyanavicka [17]

Hello,
The parabola having like focus (0,p/2) and as directrix y=-p/2 has as equation x²=2py

Here -p/2=2==>p=-4

x²=-8y is the equation.