Answer:
-a(a+4)/(16 - a²)
Step-by-step explanation:
a/(a - 4) Multiply by (a + 4)/(a + 4)
= a(a + 4)/[(a – 4)(a + 4)] Multiply the denominatorator terms
= a(a + 4)/(a² - 16) Multiply by -1/(-1)
= -a(a+4)/(-a² + 16) Reorder terms in denominator
= -a(a+4)/(16 - a²)
20 and 10, 20 is 2 times 10 and if you add them together its 30
Answer:
-6
Step-by-step explanation:
you have to look at the numbers next to it
1)Calculate the product:
21a + 10a - 3a
2)Collect like terms:
28a
Answer:
28a
Ok so 117.45 is total then u subtract 117.45 by 22.95 equals 94.5 and u divide by 3 so u get 31.5 and add the unit rate so the answer is $31.50
