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2 years ago

7

Which function has an inverse that is a function?

1 answer:

zheka24 [161]2 years ago

3 0

We need the picture or is it just the question?

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Enter the finite geometric series from its given description, and then enter its sum.

Mama L [17]

Answer:

$a_n= 4(-5)^{(n-1)}$

-10416

Step-by-step explanation:

a = 4

r = -5

geometric series: $a_n=ar^{(n-1)} = 4(-5)^{(n-1)}$

Determine which term = -12500:

$a_n=-12500$

$4(-5)^{(n-1)}=-12500$

$(-5)^{(n-1)} = -3125$

$(5)^{(n-1)} = 3125$

$(n-1)ln(5) = ln(3125)$

$n-1 = ln(3125)/ln(5) = 5$

$n = 5 + 1 = 6$

$a_6=-12500$

Using geometric sum series formula: $S_n=\frac{a(1-r^n)}{1-r}$

Therefore, $S_6=\frac{4(1-(-5)^6)}{1-(-5)} =\frac{-62496}{6} =-10416$

4 0

2 years ago

Noam chose 3 songs from a pile of 20 songs to play at a piano recital. What is the probability that she chose The Entertainer, S

OverLord2011 [107]

Answer:

3/20

Step-by-step explanation:

She chose 3 songs out of twenty so those three songs should be out of that twenty.

7 0

2 years ago

A car is driving at 40 kilometers per hour. How far, in meters, does it travel in 2 seconds?

Troyanec [42]

Answer:

i think its 22.22 thats my guess

6 0

2 years ago

Read 2 more answers

WILL GIVE BRAINLIEST!<br> Find x given y = 76° in the figure below.<br> x = <br> °

4vir4ik [10]

Answer:

104°

Step-by-step explanation:

The straight line for $q$ forms an angle of 180°

Therefore,

$x+y=180$

$x+76=180$

$x=180-76$

$x=104$

7 0

2 years ago

Read 2 more answers

Solve 5r2 – 12 = 68. {±4} {±5} {±3} {±6}

sashaice [31]

Hey there!

Assuming you meant

$5r^2 - 12 = 68$

If so, follow these steps so it can be a little bit easier to solve

Firstly, we have to $add$ by $12$ on each of your sides

$5r^2 -12 +12 \\ \\ 68 + 12$

$5r^2 = 5r^2 \\ \\ 68 + 12 = 80$

We get: $5r^2 =80$

Now, we have $divide$ by $5$ on each of your sides

$\frac{5r^2}{5} = \frac{80}{5}$

$\frac{80}{5} = 16$

We get: $r^2 = 16$

$r =$ ± $\sqrt{16}$

Therefore , your answer is: $r =$ ± $4$

Good luck on your assignment and enjoy your day!

~ $LoveYourselfFirst:)$

3 0

2 years ago