Y=-x-2
y=3x+2
multiply the first equation by 3: 3y=-3x-6
add up this equation with equation 2: 4y=-4, y=-1
-1=3x+2, x=-1
so the solution point is (-1,-1)
Answer:
x=3
Step-by-step explanation:
First you need to find the variables then do the exponents. Now you can continue solving.
Answer:
900 and $250
Step-by-step explanation
Given data
Total cost of utilities per month =$1150
Let the cost of rent be x
And the cost of electricity be y
x+y=1150---------1
It costs $650 more for rent per month than for electricity
x=x+650-------2
From equation 1
x+x+650=1150
2x=1150-650
2X=$500
x=500/2
x=$250
Hence the cost of electricity is $250
And the cost of rent is $650+250
=$900
<span>To find the cost of one roll of
tape, we divide the given price by 2 because the given price is for
twice the number of rolls that we want.
$1.28/2 = $0.64
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To find the cost of two note pads, we first divide the given price by 3 because we want to know how much one note pad costs.
$0.87/3 = $0.29
Each note pad is 29 cents. Since we want to note pads, we double this amount.
$0.29*2 = $0.58
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One highlighter costs $1.59. We want two of them, so we double this amount.
$1.59*2 = $3.18
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We want two boxes of ink catridges, and we are told that two boxes cost $1.98.
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Let's total the amounts:
$0.64 + $0.58 + $3.18 + $1.98 = $6.38
We would pay $6.38 for these seven items.</span>
