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3 years ago

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:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Coordinates (x, y)

Step-by-step explanation:

Step 1: Define

Identify

Point (7, 0)

Equation y = x - 7

Step 2: Find

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

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

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Linear equations (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

4 years ago

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

Naddika [18.5K]

Answer:

400 mL

Step-by-step explanation:

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

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

30x = 20*600

x = 20*20

x = 400 mL

4 0

3 years ago

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jeka94

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4 0

3 years ago

What's the square root of 20 to the nearest tenth

denpristay [2]

The answer is 4.5. Hope this helps.

6 0

3 years ago

Read 2 more answers

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.

Probability = 4/52 = 1/13

There are 4 sevens

Probability = 4/51

Total probability = 1/13 x 4/51 = 4 / 663

4 0

4 years ago