3 years ago

Solve the equation.

Mathematics

1 answer:

ra1l [238]3 years ago

3 0

Answer:

hhhhh

Step-by-step explanation:

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$21 times .06 = $1.26 in taxes and $21 times .15 = $3.15 in tip so you add $21+ 1.26 + 3.15 = $25.41

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Of 136 people visiting an art gallery, 17 bought paintings. What percent of the visitors bought a painting? Answer for crown :)

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12.5%

Step-by-step explanation:

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Example 2

Arada [10]

Answer:

y=x-2

Step-by-step explanation:

If you have drawn the graph of $y = x^2 - 3x + 1$ .

To determine the equation of the line which should be drawn to solve the equation: x² - 4x +3=0

Simply carry out the subtraction: $x^2 - 3x + 1 -(x^2 - 4x +3)$

$\implies x^2 -3x + 1-x^2 + 4x -3 \\= x^2 - x^2+ 4x - 3x-3 + 1\\=x-2$

The equation of the line which should be drawn is: y=x-2

What this means is simply:

$y = x^2 - 3x + 1$ and $y=x-2,$ then:\\x^2 - 3x + 1=x-2\\x^2 - 3x + 1-x+2=0\\x^2 - 4x + 3=0$

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3 years ago

Evaluate the expression when a = - 4.2 and b = - 3.9 . - 7b + 2a

Delicious77 [7]

Answer:

-35.7

Step-by-step explanation:

1. Plug in a and b to the equation:

7(-3.9)+2(-4.2)

2. Evaluate: -35.7

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3 years ago

A.) 5/4 B.) 1/2 C.) -5 D.) 3

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Answer: A

Step-by-step explanation:

4y=5x-16

divide each side by 4

y=5/4x-4

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