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elena-14-01-66 [18.8K]
3 years ago
13

What is the equation for nth term of the geometric sequence-2,8,-32,...?

Mathematics
1 answer:
Tasya [4]3 years ago
8 0

Answer:

The last one

Step-by-step explanation:

each following number in the sequence is multiplied by -4, and the first number is -2!

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Please help me thanks <br> I will give you brainlest
Annette [7]

Answer:

12.5cm

Step-by-step explanation:

This triangle is either isosceles or equilateral, we already know two sides.

the other side of the triangle is also 5 cm long because it is also the radius of the shape

the format for finding a right angle triangle like this one is base x height / 2

5 x 5 = 25

25/2 = 12.5

12.5 rounded is 13 because the decimal number is 5 and 5 or higher means we need to round up.

hopefully this helped

-cheesetoasty

3 0
2 years ago
Find the values of the 30th and 90th percentiles of the data. Please show your work.
MaRussiya [10]

Answer:

30th percentile:109

90th percentile: 188

Step-by-step explanation:

The given data set is:

129, 113, 200, 100, 105, 132, 100, 176, 146, 152

We arrange the data set in ascending order to obtain;

Array= 100,100,105,113,129,132,146,176,200

The 30th percentile is located at

(\frac{30}{100}\times 10 )} -th position, where n=10 is the number of items in the data set

This implies that the 30th percentile is at the 3rd position.

Since 3 is an integer, the 30th percentile is the average of the 3rd and 4th occurrence in the array;

This implies that the 30th percentile = \frac{105+113}{2}=\frac{218}{2}=109

The 90th percentile is located at

(\frac{90}{100}\times 10 )} -th position, where n=10 is the number of items in the data set

This implies that the 90th percentile is at the 9th position.

Since 9 is an integer, the 90th percentile is the average of the 9th and 10th occurrence in the array;

This implies that the 90th percentile = \frac{176+200}{2}=\frac{376}{2}=188

6 0
3 years ago
Please can anyone help what is AC
Nesterboy [21]

The answer is C.

You need you use Pythagoras theorem 2 times to have 2 equations with the same sides i.e. for example a2 + b2 = 81 and a2 - b2 = 9.

You can do it as you have different triangles but with the same sides.

7 0
3 years ago
A contractor bought 6.4 ft2 of sheet metal. He has used 2.1 ft2 so far and has $77.40 worth of
son4ous [18]

Answer:

$18

Step-by-step explanation:

Given:

6.4x - 2.1x = 77.4

Where,

x = cost of sheet metal per square foot

How much does sheet metal cost per square foot?

6.4x - 2.1x = 77.4

4.3x = 77.4

Divide both sides by 4.3

x = 77.4 / 4.3

= 18

x = $18

Sheet metal per square foot cost $18

8 0
3 years ago
PLEASE HELP AS SOON AS POSSIBLE
Temka [501]
Store 1 because there’s a greater variety !!!
8 0
2 years ago
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