40+20=60
90-60=30
30 divided by 60=0.3333
33.33% makes up the last classroom
There's several rules you need to know. So it gave you 2 angles, 118 and 108.
One rule is that a straight line equals 180, so angle n must equal (180-118=62). Same goes for a, (180-108=72) It tells you with that little square that the angle up top equals 90 degrees. So, every angle near it that forms a straight line must be 90 because (180-90=90)
Another rule is that triangles add up to 180, since you know a is 72, and now you know that the angle above it is 90, you do 180-90-72=k. So, k=18 degrees. Since these are all parallel lines, g=j+h (another rule) Which is why you'd know c is 108 and g is 108. Angle below 108 must be 72. 108+72=180. There's another rule! A parallelogram must add up to 360. The diagonal angle from c is also 108 and e equal 72. Makes sense because they add up to 360 now. (If they're diagonal from each other they're equal if they're on parallel lines, and they are.)
Here's another one, c=m+n because it's a rule... We already knew b equals 108 so that's another way we would've figured m+n is 108. Due to the previously discussed rule, you know the angle under b is 72, so you know the angle under g is 72 (parallel lines...)
So essentially, all you have to do is know the rules to find these angles. Angles that form a straight line equal 180. A triangle equals 180. A parallelogram equals 360. If the lines are parallel, the angles corresponding to each other are the same angle. Angles formed on the parallel lines that make a parallelogram have equal angles diagonal from each other. The little box equals 90 degrees.
Oh, and n=p because they're on parallel lines. That might help. There's too much to type to you, so I hope that summary helped.
Answer:
Input: -7
Step-by-step explanation:
We need to make an equation before solving for x, the input.
Output of A: x × 5 - 4 = 5x - 4
Output of B: x × 3 + 8 = 3x + 8
You know that the output of A is three times the output of B:
5x - 4 = 3(3x + 8)
Now that we have an equation, we can work out the value of x.
5x - 4 = 9x + 24
Isolate like terms.
-24 - 4 = 9x - 5x
Evaluate.
4x = -28
Find x.
x = -28 ÷ 4
x = -7
Answer:
12
Step-by-step explanation:
6 ÷ 1/2 = 6 × 2 = 12
Answer:
1- 1+2+3+4+5 = 15
Step-by-step explanation: