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blsea [12.9K]
3 years ago
5

CAN UHELP PLEASE???? I NEED HELP AND I CAN TAKE THETEST ONLT ONE TIME !PLLLLZZZZZ!

Mathematics
2 answers:
marusya05 [52]3 years ago
4 0
Well add them all up. : 10+15+8+7=40. There are 8 white balls out of 40. 8/40. Find the GCF of them both and simplify them.

8=8 so 8/8 = 1
40=8 so 40/8 = 5 so 1/5 is your answer.

B. is your answer.

Hoped I helped!
Alexxandr [17]3 years ago
3 0
In order to do this we must add first. We have to add the balls in order  to get the answer.

10+15+8+7=40


What number is going to go into 40? The white balls right? So....


8/40 is your answer which just needs to be simplified :

Find the GCF of them both and divide.

8/8 = 1
       
40/8 = 5


Your answer is 1/5.

Hoped I helped!
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First, let's check if the sequence is geometric or arithmetric.

If arithmetric, the sequence will have common difference.

<u>A</u><u>r</u><u>i</u><u>t</u><u>h</u><u>m</u><u>e</u><u>t</u><u>r</u><u>i</u><u>c</u>

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

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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.

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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.

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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:

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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.

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