Answer:
.
Step-by-step explanation:
2.
If angle A = 4x + 12 and x is given as 15 we can say that angle A is an acute triangle because its measure is less than 90° ➡ 4 × 15 + 12 = 72°
3.
if the angle BAM is a right triangle then
4x + 22 = 90 subtract 22 from the both sides
4x = 68 divide both sides by 4
x = 17
Answer:
D
Step-by-step explanation:
the reason why is because if you put 3 dollars in for the notebooks right you have 3x3=9 and that one pen will be 2 dollars. Now you have 3×2=6 and then the two notebooks will be 6 and you add that and get 12. Hope this helps
X= 5.1x+11.3
Explanation : combine like terms which is 5.1x and 3x and you get the answer D!