Answer:
Hence, they are equivalent.
Answer:
1.76
Step-by-step explanation:
3.9-7.4x=-4.5x+9
-2.9x=5.1
x=1.758 or 1.76
I hope this helps, if not i'm sorry.
Answer:
-13a^2 + 170ab - 13b^2.
Step-by-step explanation:
1. 36(a+b)^2 - 49(a-b)^2
This is the difference of 2 squares: a^2 - b^2 = (a + b)(a - b).
36(a+b)^2 - 49(a-b)^2
= (6(a + b) + 7(a - b))( 6(a + b) - 7(a - b))
= (6a + 7a + 6b - 7b)( 6a - 7a + 6b + 7b)
= (13a - b)(-a + 13b)
If you require the expansion of this it is:
-13a^2 + 170ab - 13b^2.
Answer:
Causation
Step-by-step explanation:
Studying better prepares you for a test, getting you better grades.
Answer:
1100 characters
Step-by-step explanation:
275 characters : 5 minutes
? characters : 20 minutes
5 x 4 = 20 minutes
275 x 4 = 1100 characters
