Answer:
<A = <B
=> 8x - 8 = 5x + 25
<=> 3x = 33
<=> x = 11
with x = 11 => mB = 5.11 + 25 = 55 + 25 = 80⁰
Answer:
20 I'm pretty sure it's right but if not sorry
Step-by-step explanation:
80x.2=16
16÷.8= 20
A. 18+2 = 20 abs 18-2= 17
Similarities: same atomic number
Differences: they have a different number of neutrons
Answer:
30.25 & 33.25
Step-by-step explanation:
x² + 11x + (5.5)² = 3+ (5.5)²
x² + 11x + 30.25 = 33.25
