Answer:
56"
Step-by-step explanation:
2x + 7 = 3
2x = 3 - 7
2x = -5
x = -5/2
Answer:
2.45 × 
Step-by-step explanation:
using the rules of exponents
•
= 
•
= 
evaluating the numerator
(3.8 ×
)² = 3.8² ×
= 14.44 × 
R = 
=
× 
= 2.45 ×
← to 2 dec. places
Answer:
y = 53
Step-by-step explanation:
To get the answer, first put 19 in place of the x, and then times that iwth two, getting 38, you add that to 15. The answer is 53.