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muminat
3 years ago
10

Plz help me answer this

Mathematics
1 answer:
VMariaS [17]3 years ago
8 0

Answer:

(0, 4)

x = 0

y = 4

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

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

12x - 5y = -20

y = x + 4

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

<em>Substitution</em>

  1. Substitute in <em>y</em>:                              12x - 5(x + 4) = -20
  2. Distribute -5:                                  12x - 5x - 20 = -20
  3. Combine like terms:                     7x - 20 = -20
  4. Isolate <em>x</em> term:                               7x = 0
  5. Isolate <em>x</em>:                                        x = 0

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

  1. Define original equation:                    y = x + 4
  2. Substitute in <em>x</em>:                                     y = 0 + 4
  3. Add:                                                      y = 4
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Step-by-step explanation:

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Abcd is a parallelogram. Photo provided
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8 0
3 years ago
What value should be added to the expression to create a perfect square? x^2 - 20x
boyakko [2]
To complete the square:
we take the coefficient ox "x" (which in this problem is -20)
we divide it by 2
square that number
then add it to both sides of the equation

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then we add 100 to both sides of the equation:
x^2 -20x
x^2 -20x +100 = 100
******************************************************
To get the roots of the equation, we take the square root of both sides:
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(x-10) = square root (10)
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4 0
3 years ago
4. A credit card company applies a 6% fee on all transactions under $10. You purchased coffee for $4.80. What fee amount will be
Akimi4 [234]

Answer:

The fee amount applied to my bill will be $0.288 or 28.8 cents.

Step-by-step explanation:

The coffee cost under $10; therefore, a 6% fee will be applied.

6% of $4.8 is

\dfrac{6\%}{100\%}  * \$ 4.80

0.06*\$4.80 = \$0.288.

Thus, the fee amount applied to my bill will be $0.288 or 28.8 cents.

6 0
4 years ago
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