The answer is -4,7
The denominator can't equal zero. Factor the denominator:
x^2 - 3x - 28=
(X - 7)(x + 4); next set each set of parentheses equal to 0;
x - 7 = 0; so x=7 is one value
x + 4 = 0; so x=-4 is the other
Remember, x = 7 and x= -4 make the denominator zero, which is a "restriction" because you can't divide by zero.
Answer:
180°
Step-by-step explanation:
180
Answer:
$20 x 37.5 x 52, or $39,000
Step-by-step explanation:
Answer:64.52%
Step-by-step explanation:
Answer:
1.172 dollars per pound
Step-by-step explanation:
Given : A pet supply store sells a 20-pound bag of dog food $23.44.
To Find :Find the unit price.
Solution :
Cost of 20-pound bag of food = $23.44
So, Cost of 1-pound bag of food = 
= 
For unit price we should divide the cost by no. of pounds
So, the error is you have divided the no. of pounds by cost
Hence the unit price is 1.172 dollars per pound