Answer:
y= -30
Step-by-step explanation:
THis is because you substitue 3 for X and then multiply -10 and 3 and a negative times a positive is a negative so -10 times 3 is -30
Answer:
x + y = 11
10x + 5y = 80
Step-by-step explanation:
5/8
You have to set the denominators equal to each other.
(1/4 = 2/8)
Answer:
Step-by-step explanation:
a^2+6^2 = 23^2
a^2 = 23^2 - 6^2
a^2 = 529 - 36
a^2 = 493
a = √493
a = 22,20
Answer:

Step-by-step explanation:
