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ad-work [718]
3 years ago
15

Sammy Sales had the following receipts for his tree trimming business for the first six months of the year. What is the average

of his sales for this period? (Use a thousands comma where applicable.) Jan. Feb. Mar. Apr. May Jun. $1,205 $1,450 $1,530 $1,655 $1,610 $1,710
Mathematics
1 answer:
Nataly [62]3 years ago
6 0

average =  \frac{sum \:  \: of \:  \:all \:  \:  obeservations}{no. \:  \: of \: observaions}

=  \frac{1205 + 1450 + 1530 + 1655 + 1610 + 1710}{6}

=  \frac{9160}{6}

=  1526.66

___________________________________________

1526.66 is the average of his sales for this period.

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The value of x is 103.

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The value of x is 12

The value of x is 50

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<h3>What is the value of x?</h3>

The sum of angles on a straight line add up to 180 degrees.

180 - 77 = 103

180 - 121 = 59

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12x = 144

x = 12

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\frac{x}{3} + 99 + 36 = 180

\frac{x}{3} = 180 - 36 - 99

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x = 45 x 3

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To learn more about supplement angles, please check: brainly.com/question/2766460

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\huge\boxed{6,\ -30;\ 78;\ -246;\ 690}

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a_1=6\\a_n=-3a_{n-1}-12\qquad n\geq2\\\\\text{Substitute}\ n=2,\ n=3,\ n=4,\ n=5\ \text{to}\ a_n=-3a_{n-1}-12:\\\\\text{for}\ n=2\\\\a_2=-3a_{2-1}-12=-3a_1-12\\\\\text{substitute}\ a_1=6\\\\a_2=-3(6)-12=-18-12=-30\\\\\text{for}\ n=3\\\\a_3=-3a_{3-1}-12=-3a_2-12\\\\\text{substitute}\ a_2=-30\\\\a_3=-3(-30)-12=90-12=78

\text{for}\ n=4\\\\a_4=-3a_{4-1}-12=-3a_3-12\\\\\text{substitute}\ a_3=78\\\\a_4=-3(78)-12=-234-12=-246\\\\\text{for}\ n=5\\\\a_5=-3a_{5-1}-12=-3a_4-12\\\\\text{substitute}\ a_4=-246\\\\a_5=-3(-246)-12=702-12=690

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