Answer:
(12 + 3x)x
Step-by-step explanation:
(12 + 3)x = 12x + 3x = 15x
(12 + 3x)x = 12x + 3x²
15x
12x + 3x = 15x
They all equal 15x except for (12 + 3x)x
X always equals 90 in a rhombus and y is 47
She had 22 marbles and gave away, 4 to two people, so 4*2 = 8. 22-8=14. she has 14 marbles left.
Answer:
Step-by-step explanation:
Always True
Positive integers are rational numbers. Adding two rational numbers produces another rational number.