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Mekhanik [1.2K]

3 years ago

14

Find the common ratio, the 8th term, the explicit formula, the recursive formula, and the three terms in the sequence after the

last one given.
-1,2,-4,8

1 answer:

skad [1K]3 years ago

6 0

Answer:

I am also truly sorry

Step-by-step explanation:

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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B1-secx%7D%20" id="TexFormula1" title=" \frac{1}{1-secx} " alt=" \frac{1}{1

lidiya [134]

We have the <span> Trigonometric Identities : </span>secx = 1/cosx; (sinx)^2 + (cosx)^2 = 1;
Then, 1 / (1-secx) = 1 / ( 1 - 1/cosx) = 1 / [(cosx - 1)/cosx] = cosx /
(cosx - 1 ) ;
Similar, 1 / (1+secx) = cosx / (1 + cosx) ;
cosx / (cosx - 1) + cosx / (1 + cosx) = [cosx(1 + cosx) + cosx (cosx - 1)] / [ (cosx - 1)(cox + 1)] =[cosx( 1 + cosx + cosx - 1 )] / [ (cosx - 1)(cox + 1)] = 2(cosx)^2 / [(cosx)^2 - (sinx)^2] = <span> 2(cosx)^2 / (-1) = - 2(cosx)^2;
</span>

4 0

3 years ago

The data set represents the number of snails that each person counted on a walk after a rainstorm. 12, 13, 22, 16, 6, 10, 13, 14

Pachacha [2.7K]

The outlier of the data set is 22

hope this helps!!

8 0

3 years ago

Read 2 more answers

Sophia scored 92% in a math test. if the test had 50 question how many did she get right

german

Answer: 46

Step-by-step explanation:

percentage scored = 92

number of correct question = x

total number of questions = 50

The formula for calculating the percentage scored

= number of correct question / total number of questions x 100

That is

92 = $\frac{x}{50}$ x $\frac{100}{1}$

$92 = \frac{100x}{50}$

cross multiplying :

$100x = 92$ x $50$

$100x = 4600$

dividing through by 100 , we have

$x = 46$

Therefore, she got 46 questions right

7 0

3 years ago

Use the following isosceles triangle to find valur of x and the length of ac.

marissa [1.9K]

Given that the triangle is isosceles, we can say that AB = AC. Using the given expressions we can form the following equation.

$\begin{gathered} AB=AC \\ 5x+8=7x-6 \end{gathered}$

Let's solve for x.

$\begin{gathered} 8+6=7x-5x \\ 14=2x \\ x=\frac{14}{2} \\ x=7 \end{gathered}$

Once we have the value of the variable, we can find the length of AC.

$\begin{gathered} AC=7x-6 \\ AC=7(7)-6 \\ AC=49-6 \\ AC=43 \end{gathered}$ <h2>Therefore, the length of AC is 43.</h2>

3 0

9 months ago

FAST ANSWERS ONLY PLEASE HELP

Gemiola [76]

D is your answer. OK

7 0

3 years ago

Read 2 more answers