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cluponka [151]
3 years ago
5

Systems of equations y=2x+3 y=-x-9

Mathematics
2 answers:
Anni [7]3 years ago
8 0

Answer:

(-4,-5)

Step-by-step explanation:

y=2x+3\\y=-x-9=>Multiply(2)=>2y=-2x-18\\\\Add\\3y = -15=>y =-5\\\\Substitute\\x=-y-9=>x=-4

Jobisdone [24]3 years ago
3 0

Answer:

vhguh

Step-by-step explanation:

cfyyghuijofdrr5xtu

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The sum of two numbers is 44 and the difference is 14. What are the numbers?
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Hope it may help u

Step-by-step explanation:

The sum of two numbers is 44 and their difference is 14. What are the two numbers? Let's start by calling the two numbers we are looking for x and y.

The sum of x and y is 44. In other words, x plus y equals 44 and can be written as equation A:

x + y = 44

The difference between x and y is 14. In other words, x minus y equals 14 and can be written as equation B:

x - y = 14

Now solve equation B for x to get the revised equation B:

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Now we know y is 15. Which means that we can substitute y for 15 in equation A and solve for x:

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Sum: 29 + 15 = 44

Difference: 29 - 15 = 14

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Unit rate is for 1 x value, so 1 napkin for 0,6 cents.

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