Answer:
y = -3
x = 
Step-by-step explanation:
4(y +
) - 2y = 8 Distribute the 4. Multiply everything in the parentheses by 4
4y + 14 - 2y = 8 4
=
= 14 Combine the like terms 4y and -2y
2y + 14 = 8 Subtract 14 from both sides
2y = -6 Divide both sides by 2
y = -3
Plug -3 in for y in either original equation.
4x - 2y = 8
4x -2(-3) = 8
4x + 6 = 8 Subtract 6 from both sides
4x = 2 Divide both sides by 4
x =
= 
Check:
x = y + 
= -3+ 
=
+ 
= 
4x - 2y = 8
4(
) - 2(-3) = 8
2 + 6 = 8
8 = 8
Suppose the English could drill the Channel in 6.2 years, then they drill with speed
km per year, where L is the length of the English Channel. If the French could drill in 5.8 years, then their speed of drillling is
km per year.
Together their speed will be
.
If they drill together, they will spend
years.
Answer: it would have taken nearly 3 years.
Answer:
1.8
Step-by-step explanation:
there are 100 cementers in a meter, 1000 millimetres in a meter, 1000/100=10 ,so 18/10=1.8
Answer:
2 times 10 - 5 equals 15
Step-by-step explanation:
hope that helps