PLEASE HELP Simplify the expression x^2 + 3x - 28/ x^2 - 7x + 12 Show your work.

1 answer:

7 0

$\frac{{x}^{2} + 3x - 28}{ {x}^{2} - 7x + 12} \: \: can \: be \: simplfied \: to \: \\ \\ \frac{(x + 7)(x - 4)}{(x - 3)( x - 4)}$
Cancel out the ones alike
$\frac{ x + 7}{x - 3} \: is \: your \: final \: answer$

You might be interested in

Please help me with number 4 thank you so much!

olga_2 [115]

Answer:

the product is equal to the number. When a positive whole number is multiplied by a fraction greater than 1. When a positive whole number is multiplied by a fraction between 0 and 1, the product is less than the whole number.

Step-by-step explanation:

7 0

2 years ago

A compact disc is designed to last an average of 4 years with a standard deviation of 0.9 years. What is the probability that a

jarptica [38.1K]

3 is 1.0 below the mean. That is 1.0 / 0.9, or 1.1111... standard deviations below the mean.
So look up z < -1.11 on your graphing calculator.
It should be around 0.1335 or 13.35%

4 0

2 years ago

Write the equation x² + 6x + y² – 8y = 19 in standard form.

kirza4 [7]

Answer:

Formula used :

x²+2xy+y² = (x+y)²
x²-2xy+y² = (x-y)²

$→{x}^{2} + 6x + {y}^{2} - 8y = 19 \\ ({x}^{2} + 2.3.x + {3}^{2} ) +({y}^{2} - 2.4.y + {4}^{2} ) = 19 + {3}^{2} + {4}^{2} \\ {(x + 3)}^{2} + {(y - 4)}^{2} = 19 + 9 + 16 \\ \boxed{ {(x + 3)}^{2} + {(y - 4)}^{2} = 44}✓$