All angles in a triangle add up into 180. Therefore, if one of them is 90 (the right angle), and the other is 55, you can work out the last angle by doing 180 - 90 - 55 = a.
a = 35 degrees.
Angle b can be worked out by knowing the fact that a straight line has an angle of 180 degrees. We know that angle a is 35, so angle b will be 180 - a, so you do 180 - 35, which is 145 degrees.
b = 145 degrees.
Angle c is the same as angle a (they share a line), so it's 35 degrees too.
Think about it... If it gains 4 pounds in 16 years, how many does it grow in 1 year? :) See the relation? If not...
a) How would you express it growing per year? 4 pounds in 16 years... It must be 4/16!
b) To find the unit rate, the numerator MUST BE 1. What can you do to 4 to get to 1? You can divide by 4!
c) Of course, whatever you do to one side of the fraction, you HAVE to do to the other. That means you have to divide the 4 in the equation by 4 AND the 16 in the equation by 4. You should get 1/4, because 4/4 is 1 and 16/4 is 4.
d) Wow! That means your unit rate is 1 pound per 4 years, or 1/4!
TIP:
Try thinking of the division sign / as 'per'. Instead of the unit rate being thought of as 1/4, think of it as 1 per 4 years. :)
Answer: n = -6
Step-by-step explanation:
2(n+5) = -2
2n + 10 = -2
Now, subtract 10 from both sides.
2n + 10 - 10 = -2 - 10
2n = -12
Now, divide by 2 on both sides.
2n/2 = -12/2
n = -6
M=4a+2c
a=10
c=5
m=4*10+2*5=40+10=50
Answer: 50
