3 years ago

Simplify the expression 7y+3x+3-2y+6

Mathematics

1 answer:

pishuonlain [190]3 years ago

8 0

Answer:

5y + 3x + 9

Step-by-step explanation:

Whenever something is multiplied by the same variable, you can combine the coefficients. In this case, first you'd move the values with the same variable next to each other, for simplicity:

7y-2y+3x+3+6

Then, combine like terms.

5y+3x+3+6

5y+3x+9

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2 years ago

Given the geometric sequence where a_1 = 3 and r = √2 find a_9

sesenic [268]

To find n-therm of a geometric sequence, we are going to use the formula $a_{n} =a _{1} r^{n-1}$
where:
$a_{n}$ is the term we are looking for
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$r$ is the ratio
$n$ is the position of the number in the sequence

From the question we now that $a _{1} =3$ , $r= \sqrt{2}$ , and $n=9$ . Lets replace those values into our formula to get:
$a _{9} =3( \sqrt{2} )^{9-1}$
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