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
taurus [48]
2 years ago
6

How much money did she have at first

Mathematics
1 answer:
romanna [79]2 years ago
7 0

Step-by-step explanation:

x = the total money she had first.

x - x×1/4 - (x - x×1/4)×1/2 = 15

you see, first we needed to deduct 1/4 of x from x. that left us with (x - x×1/4). and from that we need to deduct 1/2.

now, we can simplify :

(x - x×1/4) = (x×4/4 - x×1/4) = x×3/4

x×3/4 - x×3/4 × 1/2 = 15

x×3/4 - x×3/8 = 15

we multiply both sides by 8 (4 is a factor of 8, so this handled both fractions perfectly) :

x×3×2 - x×3 = 120

6x - 3x = 120

3x = 120

x = $40

she had $40 at the beginning.

You might be interested in
Divide fractions: 5/6 divided by 6/10 (leave as improper fraction if necessary)
tankabanditka [31]

Answer:

25/18

Step-by-step explanation:

5/6 / 6/10

K    C    F

5/6 * 10/6

50/36 = 25/18

5 0
3 years ago
Tim earns $31 after 2 hours, $46.5 after three hours, and $62 after four hours. Write an equation that represents the amount of
Kazeer [188]

Answer:

y = $15.5x

Step-by-step explanation:

Given that

Tim earns $31 after 2 hours

$46.5 earns after 3 hours,

And, $62 earns after four hours

So first determine the each hour earnings i.e.

= $31 ÷ 2

= $15.5

In two hours it would be $31 and so on

So here the equation would be

y = $15.5x

Here

y = money amount

x = number of hours

4 0
2 years ago
Help me answer this PLEASE !!
zloy xaker [14]

Answer:

1. A = 2184 yd. P = 212 yd.

Step-by-step explanation:

1. To find the perimeter of an object you need to do this formula: 2L * 2W which is 2 times the length times 2 times the width.

To find the Area you have to do this formula: H * W which means height times width.

2. They would need the area to fill the rectangle since you need to fill it and the area is the inside of the rectangle

3. She will need the perimeter since she is walking around the field and the perimeter is the outside (around) the shape.

7 0
3 years ago
A camera has a listed price of $760.95 before tax. If the sales tax rate is 7.25% , find the total cost of the camera with sales
Contact [7]

Answer:

After sales tax is applied, the camera will cost $816.12! The sales tax will be $55.17.

3 0
2 years ago
Three to the power of negative two
Yanka [14]

Answer:

1/9

Step-by-step explanation:

3^-2 = 1/3^2

1/3^2 = 1/9

4 0
3 years ago
Other questions:
  • What is the equation of the line that is parallel to the given line and passes
    8·1 answer
  • Mark recorded the growth of a plant over 8 weeks. The equation y=0.2x+2 represents the height y, in inches, after x weeks.
    8·1 answer
  • What is the result of subtracting the second equation from the first ? -3x+2y=7 -3x-2y=4
    7·1 answer
  • What is 100 * 31thank you
    13·2 answers
  • Could someone helppppp???
    8·2 answers
  • HELP ME PLEASEEEEEEEEE
    14·2 answers
  • Select the statement that describes the expression (one fourth x 8 + 3) ÷ 5.
    9·1 answer
  • Factor to solve <br> X^2-2x-15=0
    10·1 answer
  • The numbers of blocked intrusion attempts on each day during the first two weeks of
    9·2 answers
  • Solve the following system of equations algebraically:<br> x + 5y = -19<br> 3x - y=-9
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!