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
inessss [21]
3 years ago
11

If a person puts 1 cent in a piggy bank on the first day, 2 cents on the second day, 3 cents on the third day, and so forth, how

much money will be in the bank after 40 days? $8.20 $16.40 $0.40 $4.10
Mathematics
1 answer:
cluponka [151]3 years ago
4 0
This is an arithmetic sequence with the common difference being 1

and if u have 1 cent on day 1 and 2 cents on day 2....then on day 40, u would have 40 cents....but we need the sum of all the days..

the sum of an arithmetic sequence can be found using the formula :
sn = n(a1 + an) / 2
n = number of terms = 40
a1 = first term = 1
an = last term = 40

now we sub
s(40) = 40(1 + 40) / 2
s(40) = 40(41)/2
s(40) = 1640/2
s(40) = 820.....820 cents = $ 8.20 <== the sum
You might be interested in
Last year the math club had nine sixth grade students and 4 4th grade students what is the radio of 4th grade students to the to
slega [8]

Answer:

C. 4:13

Step-by-step explanation:

there are 4 students in the 4th grade and 4+9= 13 so it is 4:13

3 0
3 years ago
PLEASE HELP BEFORE MIDNIGHT 2/14/22
spayn [35]
The answer is 1 and 5
3 0
2 years ago
THIS IS FOR 60PTS A taxi company charges $3 per ride plus $1.50 for each mile traveled. Andrea wants to spend no more than $24 o
Nataly_w [17]

Answer:

$21/$1.50 per mile =14 miles. The units match $/($/mile), so division was the proper operation.

C

Step-by-step explanation:

Plz mark brainliest i need it

6 0
3 years ago
Read 2 more answers
Use the table below of the function f(x) = x4 − 2x3 to answer this question: What is the average rate of change from x = −1 to x
stealth61 [152]
F (1) - f (-1)  / 1- (-1) = -1 -3 / 1+1 = -4/2 = -2 

/ are fractions the equal signs should break them up, hope this helps.
3 0
3 years ago
Distinguish differences and similarities between slope intercept form and point slope form ohysics
Slav-nsk [51]

Differences:

point slope form of line:

(a) equation is (y-y_1)=m(x-x_1)

where m is slope and (x1,y1) is a point

(b)This equation of line can be determined when two points are given

(x1, y1) and (x2,y2)

slope intercept form of line:

(a) equation is y=mx+b

where m is a slope

b is y-intercept

(b)This equation of line can be determined when y-intercept and slope are given

Similarilties:

(a) both are equation of straight line

(b) slope is always constant in both


8 0
3 years ago
Other questions:
  • 1. round the result to 2 decimal places. -0.9x+2.8=4.1
    14·1 answer
  • The first three terms of a sequence are given. Round to the nearest thousandth (if
    15·1 answer
  • What is the sum of 3 x 10 6 and 3 x 10 6?
    9·1 answer
  • Can a object that measures 1.8 metres by 1.2 metres fit in a gap that measure 1 metre by 0.75 metres
    7·1 answer
  • What does it mean if the probability is 40% that a spinner will stop in a red section? Question 5 options: A. There is one chanc
    12·1 answer
  • One reason for standardizing random variables is to measure variables with:
    9·1 answer
  • I need the answer to this please thank you
    5·1 answer
  • What is the length of segment LM?
    6·1 answer
  • Please help if you know the pythagorean thereom
    14·2 answers
  • What is the volume of the triangular prism in the picture? <br> (sorry if the picture is blurry)
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!