Hi there! The answer is 5.
As you mentioned in the question, the amount of chores Janie does is represented by c.
When we know this we can set up an expression which represents the total amount of money Janie earns.
She always receives $3.
She also receives
$2 × the amount of chores
$2 × c = 2c
The expression which represents Janie's total earnings is 3 + 2c.
Now we can start solving.
Subtract 3 from both sides.
Divide both sides by 2.
Hence, Janie must do 5 chores to earn enough money to buy a CD.
For this question you must know about 45 45 90 triangles and 30 60 90 triangles and their special properties first you have to find the hypotenuse of the 45 45 90 triangles which is always square root of two times a leg in this case 10. so now you have 10squareroot2 the longer leg is sqare root 3 times the shorter leg in a 30 60 90 triangle
x=10squareroot6
and y is 2 2 times larger than the shorter side
y=20squareroot3
Let "a", "b" and "с" be sides of the triangle ("с" is the longest side). The triangle will be:
right if a² + b² = c²
аcute if a² + b² > c²
obtuse if a² + b² < c²
We have a=32.18, b=40 and c=53.02
a² + b² = 32.18² + 40² = 1035.5524 + 1600 = 2635.5524
and
c² = 53.02² = 2811.1204
2635.5524 < 2811.1204 ⇒ obtuse triangle
Here is your answer:
2×2=4
3×2=6
+
5×1=5
6×1=6
4+5=9
9÷3=3
6÷3=2
Your answer is...
=3/2
To find the reference angle for 144 you subtract 144 from 180 and that how you get your answer
180-144= 36*