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3 years ago

#16 please answer!! thank you!!

Mathematics

1 answer:

lyudmila [28]3 years ago

3 0

Answer:

boooobieeeesss

Step-by-step explanation:

booooobbbsss mmmmm + booooobs

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What is the value of y in the sequence below? 2,y,18, -54,162,

snow_lady [41]

First, let's check if the sequence is geometric or arithmetric.

If arithmetric, the sequence will have common difference.

Arithmetric

$\displaystyle \large{a_{n + 1} - a_n = d}$

d stands for a common difference. Common Difference means that sequences must have same difference after subtracting.

Geometric

$\displaystyle \large{ \frac{a_{n + 1}}{a_n} = r}$

r stands for a common ratio.

To find the value of y, you can check the sequence. If we try subtracting the sequences, the differences are different. That means the sequences are not arithmetric. That only leaves the geometric sequence.

Let's check by dividing sequences.

We have:

2,y,18,-54,162,...

Let's check by divide -54 by 18 and 162 by -54. We need to divide more than one so we can prove that the sequence is geometric.

$\displaystyle \large{ \frac{ - 54}{18} = - 3 } \\ \displaystyle \large{ \frac{ 162}{ - 54} = - 3}$

Hence, the sequence is geometric.

Because the common ratio is -3. Let these be the following:

$\displaystyle \large{ a_{n + 1} = y } \\ \displaystyle \large{ a_n = 2 } \\ \displaystyle \large{ r = - 3 }$

From the:

$\displaystyle \large{ \frac{a_{n + 1}}{a_n} = r}$

Substitute the values in.

$\displaystyle \large{ \frac{y}{2} = - 3}$

Multiply the whole equation by 2 to isolate y.

$\displaystyle \large{ \frac{y}{2} \times 2 = - 3 \times 2} \\ \displaystyle \large{ y = - 6}$

Therefore, the value of y is -6.

7 0

3 years ago

Find the value of X 90 58 122 32 PLEASE ANSWER NOWW 20pts

Viktor [21]

Answer:

Step-by-step explanation:

The two angles are equal

5 0

3 years ago

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If Mike has m pencils and Jen has 3 more pencils than Mike, how many pencils does jen have?

Lera25 [3.4K]

Answer:

M + 3

Step-by-step explanation:

If Jen has 3 more pencils than mike, then you add the amount of pencils to however many mike has which leads to M+3

6 0

2 years ago

What is a pattern to find the value of 7×10 to the third power

Ksju [112]

7=================+.

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3 years ago

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What’s the median ? Marking Brainliest!!

NemiM [27]

Answer:

I'm not going to give you the answer because you need to learn this on your own because it isn't hard.

Step-by-step explanation:

There are 4 main things you investigate in a number line: the median, the mode, the range, and mean. The median is the middle of your data set. You find the number of all of your data and find out the middle of that number. You find what line it is in on your data set. The range is the variety of numbers in your data set (for yours its 10). The mean is the average of your data set. The mode is the number that pops up the most (in your case, 2).

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4 years ago