Answer:
C
Step-by-step explanation:
(2x-3)(4x+5)
=2x(4x+5)-3(4x+5)
=8x^2+10x-12x-15
=8x^2-2x-15
Answer:
6 kilometers
Step-by-step explanation:
It's a right there answer. I really don't understand what yoy are asking...
Answer:
30
Step-by-step explanation:
30 because 15/20=30/40
Try this option:
only the 1-st way, where 25x+40x=x(25+40)... =260.
Another way to calculate it is 25*4+40*4=100+160=260.
answer: way 1.
Step-by-step explanation:
Multiply the first equation by 7 and the second by 2
