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MariettaO [177]

3 years ago

7

laney pays $0.99 for each song she downloads from the internet. in total she paid $24.75 for songs from the internet. how many s

ongs did lane download

1 answer:

dangina [55]3 years ago

6 0

Laney would have downloaded 25 songs

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An arithmetic sequence has this recursive formula:

horsena [70]

Answer:

$\text{\bf{C.}}\quad a_n=4+(n-1)(-7)$

Step-by-step explanation:

An arithmetic sequence that is described by the explicit formula ...

$a_n=a_1+(n-1)d$

can also be described by the recursive formula ...

$\left \{\begin{array}{l}a_1=\text{(first term)}&a_n=a_{n-1}+d&\end{array}\right.$

Matching parts of the formulas, we see that a1 = 4, d = -7. Putting these values into the explicit formula gives ...

$a_n=4+(n-1)(-7)$

4 0

2 years ago

Annie has al metre piece of wire.

KIM [24]

Answer:

wire left for square = 100 - (14+14+4+4) cm

= (100 - 36) cm

= 64 cm

so

side of square = 64/4 = 16 cm

3 0

3 years ago

A square room has a floor area of 81 square meters. The height of the room is 5 meters. What is the area of one wall

VMariaS [17]

Area of a square is side length ^2

To find the length of the side of a square from the area, that’s the square root of the area:

Length of side = sqrt(81) = 9 meters

Area of wall = length of side x height:

Area of wall = 9 x 5 = 45 square meters

Answer: 45 square meters

4 0

2 years ago

Michelle bought a new table that cost $350. The sales tax is 7.5%, how much will the tax increase the cost of the table? *

MissTica

Answer:

$26.25

Step-by-step explanation:

multiply 350 by 0.075

3 0

3 years ago

A pebble falls off of a cliff at a height of

kirill115 [55]

Answer:12

Step-by-step explanation: just did the assignment

7 0

3 years ago