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3 years ago

Adrianna, Deon, and Yoko jogged at Eisenhower Park today. Adrianna jogs at the park every 3

Mathematics

1 answer:

Dominik [7]3 years ago

3 0

Answer:the answer is 30

Step-by-step explanation hope this helped ☺️

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Evaluate using the finite geometric sum formula

Sever21 [200]

Answer:

$S_9=-18.703$ .

Step-by-step explanation:

The given series is,

$\sum_{i=1}^9(-\frac{1}{2})^{i-1}$

When we substitute $i=1$ , we get the first term, which is $a_1=-28(-\frac{1}{2})^{1-1}$

This implies that,

$a_1=-28(-\frac{1}{2})^{0}$

$a_1=-28(1)=-28$ .

The common ratio is

$r=-\frac{1}{2}$

The finite geometric sum is given by the formula,

$S_n=\frac{a_1(r^n-1)}{r-1} , -1\:$ .

Since there are 9 terms, we find the sum of the first nine terms by putting $n=9$ in to the formula to get,

$S_9=\frac{-28((-\frac{1}{2})^9-1)}{-\frac{1}{2}-1}$ .

$S_9=\frac{-28((-\frac{1}{512})-1)}{-\frac{3}{2}}$ .

$S_9=\frac{-28(-\frac{513}{512})}{-\frac{3}{2}}$ .

$S_9=-28(\frac{171}{256})$ .

$S_9=-\frac{1197}{64}$ .

$S_9=-18.703$ .

The correct answer is B

4 0

3 years ago

Read 2 more answers

Pls help asap i will give brenerlist plus 10 points

Anastasy [175]

12 meters longer than his throw = t+12

So, option C is correct.

Step-by-step explanation:

We need to translate the word phrase into a math expression.

the word phrase is:

12 meters longer than his throw

Let throw = t

So, 12 meters longer than his throw = t+12

So, option C is correct

Keywords: translate the word phrase into a math expression.

Learn more about translate the word phrase into a math expression at:

#learnwithBrainly

7 0

3 years ago

stellarik [79]

Answer:

Step-by-step explanation:

Move the constant to the right side and the sign

0.5x=26-6

Calculate

0.5x=26-6=20 >>> 0.5x=20

divide both sides of by the equation 0.5

0.5x=20 >>> x=40

4 0

4 years ago

A plane can fly 11 miles per minute. The plane will fly 6 trips, and each trip is 500 miles. How many hours will the plane fly?

N76 [4]

Speed = 11m/min
Total distance=500miles*6=3000miles
Total time= 3000miles/11m/min=273minutes = 4hrs 33mins

8 0

4 years ago

Read 2 more answers

Tammy and Wyatt are sales associates at the same used car dealership. Their supervisor is planning to promote the employee with

shusha [124]

The Answer: Tammy should get the promotion. She has a higher median with a smaller IQR, so her sales are better on average.

5 0

2 years ago