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r-ruslan [8.4K]
3 years ago
8

I need some one to help me!! Is (7, 0) a solution to the equation y = x − 7?

Mathematics
1 answer:
Marianna [84]3 years ago
3 0

Answer:

Yes

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<u> </u>

Coordinates (x, y)

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

Point (7, 0)

Equation y = x - 7

<u>Step 2: Find</u>

  1. Substitute in point [Equation]:                                                                         0 = 7 - 7
  2. Subtract:                                                                                                            0 = 0

Since 0 = 0 is true, then it would be a solution to the equation.

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Linear equations <br><br> (7,1) and (x,4); m=3/4
Julli [10]

Answer:

x = 11

Step-by-step explanation:

Slope(m) is given by:

m = change in y ÷ change in x

3/4 = (4 - 1) ÷ (x - 7)

\frac{3}{4} = \frac{3}{x - 7}

Cross multiplying gives:

3x - 21 = 12

3x = 33 , x = 33/3 = 11

6 0
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What quantity of a 50% acid solution must be mixed with a 20% solution to produce 600 mL of a 45% solution?
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Answer:

400 mL

Step-by-step explanation:

0.50x + 0.20(600-x) = 0.40*600

50x + 20*600 - 20x = 40*600

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x = 20*20

x = 400 mL

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3 years ago
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What's the square root of 20 to the nearest tenth
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Let two cards be dealt successively, without replacement, from a standard 52-card deck. Find the probability of the event. The f
ICE Princess25 [194]

Answer: 4 / 663

Step-by-step explanation:

There are 4 queens in a deck of 52 cards.

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