Answer:
x^2 - 5
Step-by-step explanation:
x = -1, y = 1 - 5 = -4.
x = 0, y = 0-5 = -5.
x = 1, y = 1 - 5 = -4.
Answer:
tons of high steel and
tons of low steel
Step-by-step explanation:
Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.
In x tons of high grade steel there are
tons of iron
tons of magnese
In y tons of low grade steel there are
tons of iron
tons of magnese
NASA orders 500 tons of steel, so

and specifies that it must be in the proportion 80% iron and 20% magnese, so

From the first equation,

Substitute it into the second equation:

Answer:
a = -b + 10x + 9/ x
Step-by-step explanation:
5(2x+3)−6=ax+b
ax+b=10x+9
ax
+b+−b=10x+9+−b
ax=−b+10x+9
ax/x = -b+10x + 9 /x
hope this helpss!!
Answer:
2,4
Step-by-step explanation:
because i said so