Call the number : x
18 is 30% of x => x : 0.3 = 18
x : 3/10 = 18 => (10/3)x = 18
x = 18 : 10/3 = 54/10 = 27/5
Recheck : 27/5 :3/10 = 270/15 = 18
Answer:
12
Step-by-step explanation:
3x+7 = 12
Answer:
29°
Step-by-step explanation:
Angles 1 and 8 are alternate exterior angles where a transversal crosses parallel lines, so are congruent.
m∠1 = m∠8
3x+25 = 4x-17
42 = m . . . . . . . . add 17-3x
Then the measure of ∠1 is 3·42 +25 = 151 (degrees), and the measure of its supplement, ∠2 is ...
m∠2 = 180° -151° = 29°
Answer:
10. 12
Step-by-step explanation:
Number 10 is 12 but I don't understand number 11.
I hope this helps.
