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
Greeley [361]
3 years ago
10

A student saves $3 dollars on August 1, $5 on August 2, $7 on August 3, and so on. How much will she save in August 20 ?

Mathematics
2 answers:
Delvig [45]3 years ago
5 0
Here is your answer

Money saved on each successive day is-

$3, &5, $7....

Clearly it forms an AP,

where

a1= 3

common difference, d= 2

n=20

So,

using formula

Tn= a1+(n-1)d

T20= 3+(20-1)2

= 3+ 19×2

= 3+ 38

=41

So, money saved on August 20= $41

Sum of money saved upto August 20 =
n/2 (a1+T20)
= 20/2 (3+41)
= 10× 44
= $440

HOPE IT IS USEFUL
Nookie1986 [14]3 years ago
4 0

$41. It increases by $2 each day. Formula 2n+1 :)

You might be interested in
How do you solve -7-x=24
Airida [17]

Answer:

-31

Step-by-step explanation:

you have to get the variable on one side alone. so you would add the -7 to the 24 then divide by -1 because you have a -x when adding the -7 to the 24

3 0
3 years ago
Which takes up a larger area: the flowers or the grass?
geniusboy [140]

Answer:

THE GRASS

Step-by-step explanation:

Because the grass takes up a larger area

7 0
2 years ago
Read 2 more answers
What is the product of (3y^-4)(2y^-4)?
borishaifa [10]
(x^a)(x^b)=x^(a+b)

(ab)(cd)=(a)(b)(c)(d)

x^-m=1/(x^m)


(3y^-4)(2y^-4)=
(3)(y^-4)(2)(y^-4)=
(6)(y^-8)=
6/(y^8)
4 0
3 years ago
Read 2 more answers
Which equation represents the graphed function ?
goldenfox [79]

Answer:

A

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 3) and (x₂, y₂ ) = (1, 1)

m = \frac{1-3}{1-0} = - 2

note the line crosses the y- axis at (0, 3) ⇒ c = 3

y = - 2x + 3  → A

8 0
3 years ago
Read 2 more answers
Which statements are true about a rectangular pyramid with a height of 9 centimeters and a base with the dimensions of 4
tigry1 [53]

Answer:

- The area of the base of the pyramid, B, is 24 cm

- A rectangular prism with the dimensions of 9 cm by 4 cm by 6 cm will have 3 times volume of this pyramid.

Step-by-step explanation:

Volume of a rectangular based pyramid = 1/3{Base area × Height}

Base Area = Length × Breadth

Volume = 1/3{(Length × Breadth) × Height}

Given a rectangular pyramid with a height of 9 centimeters and a base with the dimensions of 4

centimeters by 6 centimeters

Base Area = 4cm × 6cm

Base area = 24cm²

If Height =9cm

Volume of the pyramid = 1/3 × 24 × 9

Volume = 24 × 3

Volume of the pyramid = 72cm³

If the shape is a prism, the volume will be base area × height

= 24 × 9

= 216cm³

It can be seen that volume of rectangular prism = 3 × volume of rectangular pyramid.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Perform the indicated operation.<br><br> 15 - (-11)
    5·2 answers
  • 1. x/6 + 4 = 15
    6·1 answer
  • (3x^2+3)+(3x^2+x+4)?
    10·2 answers
  • What is the simplified form of the expression 2b^-6·b^12?
    13·1 answer
  • A plane leaves Texas. It arrives in London 10 hours later.what time did it leave Texas
    15·2 answers
  • Given that f(x) = x^2-3/2
    11·1 answer
  • A man invested 800.00in a bank at a simple interest rate of 5% per annum .Find his total amou year​
    9·1 answer
  • Sylvie needs $110 for a concert ticket. She already has $16 and she can earn the rest by working 10 hours at her job. If h repre
    10·1 answer
  • What is the solution to the system of equations?
    12·1 answer
  • Which is equivalent to 80 1/4?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!