Answer:
x = 13/8
y = -45/8
Step-by-step explanation:
9x + y = 9
3x + 3y = -12
Divide the second equation by 3
x+y = -4
Multiply this by -1
-x -y = 4
Add this to the first equation to eliminate y
9x + y = 9
-x -y = 4
-----------------
8x +0 = 13
Divide by 8
8x/8 = 13/8
x = 13/8
Now find y
x+y = -4
13/8 +y = -4
Subtract 13/8 from each side
13/8 -13/8 +y = -4-13/8
y = -32/8 - 13/8
y = -45/8
Answer:
$1350
Step-by-step explanation:
Percentage commision earned = 10%
Amount needed to pay for concert = $135
Hence, total sales for the week must be :
Let total sales = x
10% of total sales = $135
10/ 100 * x = $135
0.1x = $135
x = $135 / 0.1
x = $1350
Answer:
(x+7)(x-7)
Mark my answer as Brainlist.
Answer:
-42.86%
Step-by-step explanation:
Mathematically, the percentage change is;
(new value -old value)/old value * 100%
According to this question
new value = 63
old value = 90
Inputing these values we have ;
(63-90)/63 * 100
-27/63 * 100%
= -3/7 * 100% = -42.86 #
Answer:
ldadshsacbdsc
Step-by-step explanation:
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