Answer:
Step-by-step explanation:
x = y/7
y-x = 18
y - y/7 = 18
(6/7)y = 18
y = 21
x = y/7 = 3
Answer:
-120 degrees.
Step-by-step explanation:
This triangle has a rotational symmetry of 3 (it repeats its orientation 3 times as it makes a complete circle around the center), so the angle of rotation is 360 / 3 = 120 degrees.
As the rotation is counter clockwise strictly speaking the answer is -120 degrees.
Answer:
$1,500
Step-by-step explanation:
A 2.5% increase in the $60,000 average family income would be required:
0.025 × $60,000 = $1,500
Your annual income would have to increase by $1,500.
To get to 20 minutes from 2 minutes you multiply by 10, do the same to the 30 problems to get 300. The answer is 300 problems in 20 minutes.
