Note how angle GFE forms a right angle, which is 90 degrees.
Since the line cuts that angle into two smaller angles, intuitively, these angles add up to 90 degrees.
So, we can say that 2x + 3x = 90 (angle sum of right angle)
5x = 90
x = 18 degrees
Use the pythagorean therom. 12 squared + 3 squared = x squared
So the answer is 12.4 feet
Answer:
B) 4y - 2 - 3y = 6
Step-by-step explanation:
x = 4y - 2 Substitute this into the second solution
x - 3y = 6
4y - 2 - 3y = 6
HOW TO WORK OUT
cross multiply so $24 is 80% because it was 20% discounted so..
24 = 80%
? = 100%
24 x 100 = 2400
2400 divided by 80 = 30
$30 was the original price
HOW TO CHECK
20% of $30
again you cross multiply so..
$30 = 100%
? = 20%
30 x 20 = 600
600 divided by 100 = 6
$30 - $6 = $24 which was the discounted pricw