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3 years ago

Is 3, -3, 3, -3 a geometric sequence

Mathematics

1 answer:

harina [27]3 years ago

3 0

Answer:

Step-by-step explanation:

yes it is a geometric sequence

a1=3

r=-3/3=-1

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Which of the following points are solutions to the system of inequalities shown below?

aleksley [76]

Answer:

b. (3,0)

e. (5,-6)

f. (2,1)

Are solutions to the system of inequalities

Step-by-step explanation:

b. (3,0)

0 ≤ -2(3) + 6

0 ≤ 0 is true

3 > 1 is true

e. (5,-6)

-6 ≤ -2(5)+6

-6 ≤ -4 is true

5 > 1 is true

f. (2,1)

1 ≤ -2(2)+6

1 ≤ 2 is true

2 > 1 is true

3 0

3 years ago

Which equation has no real solutions?

olasank [31]

Answer:

Step-by-step explanation:

−b±√b2−4ac

−(2)±√(2)2−4(2)(15)

2(2)

−2±√−116

and there is really no solution

6 0

3 years ago

Mr. Walker asked his students to use the associative property to find an expression that is equivalent to (13 + 15 + 20) + (20 +

pychu [463]

I got it as 4 when calculating all have the same number which is 133

7 0

3 years ago

Which expression is equivalent to 5(2+7)?<br> A. 2(5+7)<br> B. 2+7(5)<br> C. 5(2)+7<br> D. 5(2)+5(7)

Kipish [7]

Hope this helps but I this helps but I think the answer is D if not then try B

8 0

3 years ago

Read 2 more answers

A college statistics class at a nearby university has 1,000 students enrolled in it. On a recent exam, the mean score was 75% wi

IceJOKER [234]

Answer:

38.11%

Step-by-step explanation:

Given that:

Mean (μ) = 75, standard deviation (σ) = 5

Z score is a measure in statistics to determine the variation of a raw score from the mean. It is given by the equation:

$z=\frac{x-\mu}{\sigma}$

To calculate the percentage of students scored between a 73 and 78 (C grade), we need to find the z score for 73 and then for 78.

For x = 73, the z score is:

$z=\frac{x-\mu}{\sigma}=\frac{73-75}{5} =-0.4$

For x = 78, the z score is:

$z=\frac{x-\mu}{\sigma}=\frac{78-75}{5} =0.6$

From the probability distribution table:

P(73 < x < 78) = P(-0.4 < z < 0.6) = P(z < 0.6) - P(z < -0.4) = 0.7257 - 0.3446 = 0.3811 = 38.11%

4 0

3 years ago