MATHEMATICS COLLEGE

Find the seventh term of thegeometric sequence, given the
first term and common ratio.
a_=1 and r=-2/3
[?]

Answers

Answer 1
Answer:

Answer:

T_7 = (64)/(729)

Step-by-step explanation:

Given

a =1

r = (2)/(3)

Required

Determine the 7th term

The nth term of a gp is:

T_n = a * r^{n-1

So, we have:

T_7 = 1 * (2)/(3)^{7-1

T_7 = 1 * (2)/(3)^{6

T_7 = 1 * (2^6)/(3^6)

T_7 = 1 * (64)/(729)

T_7 = (64)/(729)

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Help please i need all

Answers

Answer:

What grade are you in?

Step-by-step explanation:

6. 16 divided by 4 is 4

Then your keep going like 8 is 25 divided by 5 which is 5.

9. 120 divided by 4 is 30

10. 36 divided by 6 is 6
If you use a calculator it will be easier

1. An equation is shown below.3 (x-2) + 7x= 1/2(6x-2)
How many solutions, if any, does the equation have?

Answers

Answer:

x=5/7

Step-by-step explanation:

3(x-2)+7×=1/2×(6×-2)

3x-6+7×=1/2×2(3×-1)

3×-6+7×=3×-1

-6+7×=-1

7×=-1+6

7×=5

Derive cos (2x - 1)​

Answers

Answer:

Step-by-step explanation:

I believe that what you want to do here is to "differentiate" cos (2x - 1).

We must use the rule for differentiating cos x and also the chain rule, since the input to cos x here is (2x - 1).

(d/dx) is the derivative operator.

(d/dx) (cos x) = -sin x

(d/dx) cos (2x - 1) = - sin (2x - 1) * (d/dx) (2x -1) = -sin (2x - 1)(2) = -2sin (2x - 1)

A sample of n = 100 scores is selected from a population with mu = 80 with sigma= 20. On average, how much error is expected between the sample mean and the population mean?

Answers

Step-by-step explanation:

s = σ / √n

s = 20 / √100

s = 2

Final answer:

Using the formula for standard error, we calculate the expected error between the sample mean and the population mean in the scenario provided. The answer is 2.

Explanation:

The standard error of the mean (SEM) can be calculated using the formula SEM = sigma/ sqrt(n), where 'sigma' is the standard deviation of the population and 'n' is the sample size. In this case, sigma (σ) is 20 and the sample size (n) is 100. So, SEM = 20/sqrt(100) = 20/10 = 2.

The standard error quantifies the average amount of error between the sample mean and the population mean. Therefore, one can expect, on average, a 2 score difference between the sample mean and the population mean.

Learn more about Standard Error here:

brainly.com/question/31941158

#SPJ3

Find the measure of angle 'y'. 49° A. 60 degrees B. 70 degrees C. 80 degrees D. 110 degrees​

Answers

Answer:

70°

Step-by-step explanation:

61° + 49° + y = 180° (sum of angles of a triangle is always 180°)

so,

y= 180° - 61° - 49° = 70°

Write a corresponding real-world problem for each equation.1. 0.55x + 4.50 = 0.65x + 3.50

2. 8x + 80 = 4x + 120

Answers

Answer:

It is 2 because it is a math question with the factors on the multipulcation

Step-by-step explanation:
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