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
quester [9]
3 years ago
12

Five sisters - Alexandra, Emily, Lisa, Martha, and Laura decide to purchase a big screen TV as a birthday gift for their mother.

- Martha agrees to pay 20% of the cost -Emily gives $75 -Alexandra pays 25% of the cost -Laura gives $75 - Lisa contributes one-half of the cost. What is the total cost of the big screen Tv? What amount will each sister pay?
Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
8 0

Answer:

  • Total cost: $3000
  • Martha: $600
  • Emily: $75
  • Alexandra: $750
  • Laura: $75
  • Lisa: $1500

Step-by-step explanation:

The percentages add to 95%, so the dollar amounts (total $150) comprise 5% of the cost. Then the total cost is ...

  total cost × 5% = $150

  total cost = $150/0.05 = $3000

And the percentages are ...

  20% × $3000 = $600 (Martha's share)

  25% × $3000 = $750 (Alexandra's share)

  50% × $3000 = $1500 (Lisa's share)

_____

<em>Check</em>

$600 + 75 + 750 + 75 + 1500 = $3000 . . . as it should

You might be interested in
Please help me its about solving system by substitution
Andrew [12]

Answer:

(-3, 4)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

<u>Algebra I</u>

  • Terms/Coefficients
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = -x + 1

2x + 3y = 6

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

  1. Substitute in <em>y</em>:                    2x + 3(-x + 1) = 6
  2. Distribute 3:                         2x - 3x + 3 = 6
  3. Combine like terms:           -x + 3 = 6
  4. Isolate <em>x</em> terms:                   -x = 3
  5. Isolate <em>x</em>:                              x = -3

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define equation:                     y = -x + 1
  2. Substitute in <em>x</em>:                        y = -(-3) + 1
  3. Simplify:                                   y = 3 + 1
  4. Add:                                         y = 4
6 0
3 years ago
J(2x+9) m(6x-1)<br> i don’t get this at all
kherson [118]

Answer:

omg that one is hard but it is 18j-6m

4 0
3 years ago
Write the equation of the line that has a slope of -4 and goes through (3,-3)
Sindrei [870]
The functional equation of the line is f (x)=a*x+b
you have already a: -4 -->f (x)=-4 x+b
Now you can use the point (3;-3)
3 is the x-coordinate and -3 the f (x)-coordinate
--> -3 = -4*(3) + b Now you can solve it
-3 = -12+b (+12)
b = 9
ANSWER: f (x) = -4x + 9
3 0
3 years ago
If the Federal Reserve lowers the federal funds rate, what will happen to bank savings accounts? (4 points)
mariarad [96]
The interest rate offered would decrease. The federal reserve sets the rates to help prevent inflation, deflation etc
8 0
3 years ago
Select all that apply. Which lines have a slope of -2? Line a line b line c line d
katrin2010 [14]

Do you have a photo of the options?

8 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me on #18, don't know how to do the question.
    12·1 answer
  • Find the value for x? X-5+5x-12=25
    12·1 answer
  • 1=5 2=25 3=325 4=4325 6=?
    11·1 answer
  • Graph each absolute value function. State the domain, range, and y-intercept.
    11·1 answer
  • Amia went to a flower farm and picked f flowers. When
    11·1 answer
  • What is seven over twenty one take away one over twenty one in its simplest form
    5·1 answer
  • Give the correct answer<br>Solve all questions to get brainliest
    9·1 answer
  • Brenda has 14 fewer apps than Caleb. If Caleb deleted 5 apps, then he would have twice as many as Brenda. How many apps do Brend
    8·1 answer
  • A binomial probability experiment is conducted with the given parameters. compute the probability of x successes in the n indepe
    9·1 answer
  • The pentagons ABCDE and JKLMN are similarFind the length x of MN.MADM27183827K
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!