Answer:4.898979486
Step-by-step explanation:
Answer: $95.7
Step-by-step explanation:
580 x 5.5% = 31.9 x 3 =95.7
$95.7
X = 3
y = -1
get the x or y by itself first (second eq. is easier)
So, x + 2y = 1
-2y -2y
Now we get:
x = -2y +1 Plug it into the other equation.
2x + 3y = 3
2(-2y +1) + 3y = 3
-4y + 2 + 3y = 3
-1y +2 = 3
+1y -3 -3 +1 y
y = -1 (plug into either eq to get x)
<span>x + 2y = 1
</span>x+2(-1) = 1
x-2=1
+2 +2
x = 3
his average test score would be 82
you add together all the test scores
90 + 76 + 84 + 66 + 96 + 89 + 73 =574
and then you divide that number by how many scores there were
574 ÷ 7 = 82
