The perimeter means you add up all the sides
so you do
(12b-8) + (12b-8) + (9b+8)
now you just add the like terms
12b+12b+9b = 33b
-8+-8+8= -8
so the perimeter is 33b-8
It would take both Hannah and destiny 28 hours to paint the room together
Answer:
Her wage increased by $2 an hour
Step-by-step explanation:
Numerator , denominator, mixed fractions, proper fractions
Answer:
Brass + Brass = Woodwind
Brass + Woodwind = 150
Brass = 50, Woodwind = 100
Step-by-step explanation:
Hi there!
The two addition equations would be:
Brass + Brass = Woodwind
(As there are twice as many woodwind as brass)
AND
Brass + Woodwind = 150
(As there are 150 of those instruments in total)
These two equations fully describe this situation, and you can use them to solve the problem using substitution as well.
Since Woodwind = Brass + Brass, then:
Brass + Woodwind =150
Can also be written as:
Brass + (Brass+Brass) = 150
Now we can solve by combining all the like terms which gives us:
3*Brass = 150
Brass = 150/3
Brass = 50 meaning that Woodwind = 100, as 50+50=100.
Hope this helped!