1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kvv77 [185]
3 years ago
11

Grace loves to download new music. She originally had 47 songs but plans to purchase 3 new songs each week. She wants to know ho

w many songs she will have after 104 weeks. Which equation should she use?
(A) a104 = 104 + 3(47 - 1)
(B) a104 = 104 + 3(47 + 1)
(C) a104 = 47 + 3(104 - 1)
(D) a104 = 47 + 3(104 + 1)
Mathematics
2 answers:
Leokris [45]3 years ago
6 0

Answer:

Hence, the equation that represents the number of songs she will have after 104 weeks is:

a_{104}=47+(104-1)\times 3

Step-by-step explanation:

It is given that:

originally had 47 songs but plans to purchase 3 new songs each week. She wants to know how many songs she will have after 104 weeks.

Based on the data we see that:

Initial number of songs she has:

a_1=47

The number of songs she will have after second week is:

a_2=47+3=47+3\times (2-1)

After Third week:

a_3=47+3+3\\\\a_2=47+3\times (3-1)

and so on:

After 104 weeks she will have:

a_{104}=47+(104-1)\times 3

Hence, option: C is the correct answer.

( This could also be seen as it form an arithmetic progression with initial term as a=47 and common difference i.e. d=3

Hence, the nth term is given by:

a_n=a+(n-1)\times d

)

Elis [28]3 years ago
5 0

Answer:

(C) a_1_0_4 = 47 + 3(104 - 1)

You might be interested in
Which of the following is a unit rate?
ruslelena [56]
The answer is math+math=math
3 0
3 years ago
Read 2 more answers
Help!! I have this for a test and im very confused
skad [1K]

Answer:

check this out

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
It would mean a lot.
LUCKY_DIMON [66]
First, subtract y2 - y1 to find the vertical distance. Then, subtract x2 - x1 to find the horizontal distance.

Formula to find distance given two points.

Square root (X2 - X1)^2 + (Y2 - Y1)^2

Xa Ya Xb Yb
A = (3, -4) B = (-1, 3)

Xa goes into X2 and Xb goes into X1

(3 - (-1))^2

Ya goes into Y2 and Yb goes into Y1

(-4 - 3)^2

Square root (3 - (-1))^2 + (-4 - 3)^2

Square root (4)^2 + (-7)^2

Square root 16 + 49

Square root 65

= 8.06

The error was Drako had (3 - 4)^2 when it should have been (3 - (-4))^2 because a positive is subtracting a negative.
6 0
3 years ago
Solve the for the inequality ​
Naddika [18.5K]

Answer:

k ≥ -18

Step-by-step explanation:

-8\leq \frac{2}{5}(k-2)\\\\-8(5)\leq (5)\frac{2}{5}(k-2)\\\\-40\leq 2(k-2)\\\\\frac{-40}{2}\leq \frac{2(k-2)}{2}\\\\-20\leq k-2\\\\-20+2\leq k-2+2\\\\-18\leq k

5 0
3 years ago
Read 2 more answers
Jason walks a round-trip of 0.85 mile to school every day. How many miles will he walk in 4.5 days?
Volgvan

Answer:

4.5 x 0.85 = 3.825

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Part a give the number of total electron groups, the number of bonding groups, and the number of lone pairs for the geometry dep
    14·1 answer
  • What is an acute angle?
    7·2 answers
  • Find the sum of 12a + 7b, −6a − 9, and 14a − 12b.
    8·2 answers
  • Solve: 4x - 3 = x + 9
    15·2 answers
  • Need help asap!-----------------------------------------------------------------------------------------------------------------
    6·1 answer
  • SOME BODY PLEEEASE HELP ME WITH THESE I need these completed by tonight PLLEEASEE7. Find the measures of the following to the
    10·1 answer
  • Patti drives a car for 224 miles in 4 hours what is her constant speed
    7·2 answers
  • Given m||n, find the value of x.<br><br> (7%-10)<br> (6X-5)
    14·1 answer
  • A group of friends wants to go to the amusement park. They have no more than $ 100 to spend on parking and admission. Parking is
    14·1 answer
  • HELP DUE IN 10 MINS!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!