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
Goshia [24]
3 years ago
12

Marika is training for a track race. She starts by sprinting 100 yards. She gradually increases her distance, adding 4 yards a d

ay for 21 days. Which explicit formula models this situation? A. an = 100 + (n – 1)21 B. an = 21 + (n – 1)4 C. an = 100 + (n – 1)4 D. an = 4 + (n – 1)100
Mathematics
2 answers:
ratelena [41]3 years ago
7 0

Answer:

I think it's C

Step-by-step explanation:

I'm not 100% sure but thats what i would guess.

Alenkasestr [34]3 years ago
3 0

Answer:

C. a_n = 100 + (n - 1)4

Step-by-step explanation:

Given,

Initial distance Marika covered = 100 yards,

Also, She gradually increases her distance by 4 yards,

Thus, the difference between the distance of consecutive days is 4 yards,

So, there is an AP that shows the given situation,

Having first term, a = 100,

Common difference, d = 4,

Since, the explicit formula of an AP is,

a_n=a+(n-1)d

\implies a_n=100+(n-1)4

Which is the required formula.

Option 'C' is correct.

You might be interested in
If i round 4,180 to the nearest thousand what will it be
dybincka [34]
The answer would be 4,000

6 0
3 years ago
In a music competition, a participant has to score a total of at least 40 points in the first four rounds combined to move on to
MAXImum [283]
4+3p≥40
He needs to have 40 or more to get to the finals so 4+3p has to be 40 or more
7 0
3 years ago
Match the following items.
Margarita [4]

1. Commutative property of adfition

2. Multiplicative inverse

3. Associative property of addition

4. Distributive property

5. Additive identity

8 0
3 years ago
Read 2 more answers
10 points plz help thanks
ryzh [129]

Answer:

b

Step-by-step explanation:

3 0
3 years ago
Which is the smallest number? 3/4,1/5,10/23,2/31
bixtya [17]
A quick and easy way to do this particular question is to think all of these numbers are close to 1/2 except 2/31. So, the lowest is 2/31.

H O P E T H I S H E L P S!
4 0
3 years ago
Read 2 more answers
Other questions:
  • 4(2 - x) &gt; -2x - 3(4x + 1)<br>solve for x​
    14·1 answer
  • May has 31 days. How would the experimental probability be affected if someone mistakenly used 30 days to calculate the experime
    10·1 answer
  • How do I solve this problem
    5·1 answer
  • |x - 3| +8=3<br><br> Absolute value equations
    13·2 answers
  • A $22 item has been marked up 15%. What is the new price?
    5·2 answers
  • 6 less than r <br><br><br><br> Someone please help me with this
    10·1 answer
  • 4.
    15·2 answers
  • A university found that 30% of its students withdraw without completing the introductory statistics course. Assume that 20 stude
    10·1 answer
  • If a figure has a length of 12, a width of 5, and a height of 15, what is its volume? Include an expression.
    11·1 answer
  • !!!PLEASE HELP WILL GIVE BRAINLIEST EASY!!!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!