Answer:
n=-1
Step-by-step explanation:
-42-30n -2 = -4n-7-11
-44-30n=-4n-18
-26n=26
n=-1
Ok so 2cm on the blueprint is actually 7cm in real life
2:7=1:3.5
for every cm on the map, it is 3.5 times that in real life
so total legnths
17 times 3.5+18 times 3.5+18 times 3.5+19 times 3.5=
59.5+63+63+66.5=
252
answer is 252cm
Put the values of w = 12 and x = 1/2 to the expression 15 - 0.75w + 8x.
15 - 0.75(12) + 8(1/2) = 15 - 9 + 4 = 6 + 4 = 10
Answer:
x/9-8x+5x
Step-by-step explanation:
I can't help but to solve it:
x/9=9x
9x-8x+5x=6x
= 6x