3 years ago

When I solve for variables but there is no answer how do I solve/estimate?

Mathematics

1 answer:

Fittoniya [83]3 years ago

7 0

X2+3 = 5x if you mean simplify by estimate

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An arrangement of bowling pins has 3 pins in the first row and 12 rows in all. In each successive row one pin is added.

Citrus2011 [14]

Answer:

The explicit rule for this situation is

$a_n = 2 + n$

In row 12 there will be 14 pins

Step-by-step explanation:

We have an initial amount of 3 pins in the first row. Let's call the number of pins in row n.

where n is an integer and $3\leq n\leq 12$ .

$a_1 = 3$

In row n + 1 there will always be a pin more than in the previous row n, then:

$a_2 = a_1 +1$

Then:

$a_n = a_1 + (n-1)\\\\a_n = 3 + (n -1)\\\\a_n = 2 + n$

<em>Finally in row 12 there will be: </em>

$a_ {12} = 2 +12\\\\a_ {12} = 14\ pins$

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4 years ago

6-.25x16+21/3 solved and explained please and thank you!

vesna_86 [32]

Is this your expression?
25x16+21/3 or -25x16+21/3
Is that an x or multiplication sign?

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3 years ago

Which of the following could be equal to lxl ? Select all that apply.

Ierofanga [76]

I believe it is either 5 and 0 or just 5 because it's the distance from 0 and you can't go negative in distance

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3 years ago

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Evaluate -a -8b when a = 9 and b = -3<br> someone please help quick!!

ollegr [7]

Answer:

Step-by-step explanation:

-a -8b = -9 + 24 = 15

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4 years ago

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a teacher randomly selects one student from a group of students where 12 are wearing a black shirt 8 are wearing a red shirt and

marusya05 [52]

Answer:

12/32 or 3/8 or 37.5%

Step-by-step explanation:

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3 years ago