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stepan [7]
3 years ago
11

Aidan earned a total of $117 in one week. His babysitting job pays him $15 per hour. His after-school job at a barbershop pays h

im $9 per hour. He worked a total of 9 hours that week. The system of linear equations represents this situation, where x represents the number of hours Aidan spent babysitting and y represents the number hours he worked at the barbershop.

Mathematics
1 answer:
Inga [223]3 years ago
8 0

Answer:

a    

Step-by-step explanation:

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Identify each sequence as arithmetic or geometric. Explain your answer, and write an explicit formula for the
hammer [34]

Answer:

Arithmetic sequence

a_n=\frac{1}{2}-n for n\geq 1

Step-by-step explanation:

We are given that a sequence

-\frac{1}{2},-\frac{3}{2},-\frac{5}{2},-\frac{7}{2},...

We have to identify the sequence as arithmetic or geometric and write an explicit formula .

a_1=-\frac{1}{2}

a_2=-\frac{3}{2}

a_3=-\frac{5}{2}

a_4=-\frac{7}{2}

d_1=a_2-a_1=\frac{-3}{2}+\frac{1}{2}=-1

d_2=a_3-a_2=-\frac{5}{2}+\frac{3}{2}=-1

d_1=d_2=-1

When the difference of consecutive terms is constant then the sequence is an arithmetic.

Hence, the sequence is an arithmetic.

a_n=a+(n-1)d

a_n=-\frac{1}{2}+(n-1)(-1)=-\frac{1}{2}-n+1=\frac{1}{2}-n for n\geq 1

3 0
3 years ago
3x less than 2 times the sum of 2x and 1 is equal to the sum of 2 and 5​
AlexFokin [52]

Answer:

5

Step-by-step explanation:

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