For 3 you have to subtract 72 on both sides
+72 -2X=54
-72 -72
72-72 cancels out and then subtract the 54 from -72 the answer for that then should be divided by -2
and then X= (the answer)
and the -72 goes under 54 not -2x
Answer:
0.42347247428
Step-by-step explanation:
my calcuator
7/16.52
Answer:
8 yards
Step-by-step explanation:
8 yards
on first down it was first and 10 but gained 7
on second down it was second and 3 but lost 15
third down would be 3rd and 18
15-7=8
Step-by-step explanation:
f(x) =14x+4
h(x)=7x
f(x)-h(x)=14x+4-7x
=7x+4
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Answer:
Step-by-step explanation:
All the masses here are based on the main mass of the sand. So we will call sand "x". If there is two times as much cement as sand, then cement is 2x; if there is three times as much stone as sand, then stone is 3x. All of these added together equal a mass of 600 kg:
x + 2x + 3x = 600 so
6x = 600 and
x = 100 kg
There are 100 kg of sand. That means that there is 200 kg of cement and 300 kg of stone
