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!
Answer:
v = 9
Step-by-step explanation:
Since the triangles are similar then corresponding angles are congruent
∠B and ∠Q are corresponding angles, hence
6v - 5 = 5v + 4 ( subtract 5v from both sides )
v - 5 = 4 ( add 5 to both sides )
v = 9
Answer: standard deviation = 8
This is because mu = 75 is the mean, which is at the very exact center of this distribution. One space to the right is 83, which is 83-75 = 8 units away from the center. This distance is exactly one standard deviation. We can say "83 is one standard deviation larger than 75".
Or you could note the distance from 67 to 75 is also 8, because 75-67 = 8. Each tickmark represents stepping one standard deviation in distance.
Answer:
4/100
Step-by-step explanation:
To solve, turn the percent to a decimal.
4% as a decimal is 0.04 or four one hunderdths.
that decimal is the same as four over one hunderd, or 4/100
