The correct answer is C: 1/(x + 4)(x - 5)
Why? Well, let's first simplify x^2 - 3x - 10 and x^2 + x - 12; the two denominators. Each of these should become an (x +/- number), and to figure out the number, as well as whether it is positive or negative, we can do a simple trick
Look at the factors of the right number (In this case, -10 and -12)
-10 -12
1 * -10 1 * -12
-1 * 10 -1 * 12
-2 * 5 -2 * 6
2 * -5 2 * -6
-3 * 4
4 * -3
Now for part 2
Which of these pairs add up to the middle number? One of the pairs of -10 should make -3, and likewise, one of the pairs of -12 should make 1 (when x has no number in front of it you may safely assume it is 1).
2 - 5 = -3 and 4 - 3 = 1, so we now know that the 2 fraction equations simplified is
x + 2 / (x + 2)(x - 5) * x - 3/(x -3)(x + 4)
Notice anything repeating? As long as they are apart of the same fraction, we can cross out anything that has the same x - number. Crossing out both x + 2 and x - 3, we now simply have x - 5 * x + 4. Because we crossed out both numerators, the top numbers both become 1, thus giving our answer, C.
Answer:
15 sections
Step-by-step explanation:
90/6=15
Answer:
a) Job A.
Step-by-step explanation:
Time, t = 2000 hours per year
Job A:
Salary = $13 per hour
Job B:
Salary = $11 per hour
Healfh insurance = $3400 per year
= $3400/2000
= $ 1.7 per hour
B:. Mb = $11 × 2000 = $22000
Health insurance costs 3400$ per year so while we are working our job A we have: so $11.3 × 2000 = $22600. So on job A we earn $600 per year more than on job B.
Answer:
width is 4 meters
Step-by-step explanation:
A = l*w where l is length and w is width
28 = 7*w
Divide each side by 7
28/7 = 7w/7
4 =w
Answer:
Step-by-step explanation:
what is the amount for family c
