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raishagibson
22.06.2019 •
Mathematics
Mrs.baker paid 2.50 for 5 pounds of bananas. write an equation relating the cost c to the number of pounds p of bananas. how much would mrs. baker pay for 8 pounds of bananas
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Ответ:
Solution is x=4 and y=1.
Step-by-step explanation:
We are given with 4 x-5 y=11
And 8 x - 5 y =27
Let's solve them using elimination method.
Subtract the equations to get rid the 'y' terms. Or, multiply the second equation and add them together.
4 x -5 y =11
-8 x+5 y =-27
-4x =-16
Divide both sides by -4.
x =4.
Now, plug in x as 4 into any of the given equations to find the corresponding y.
4(4) -5 y =11
16 -5 y =11
Subtract both sides 16.
-5y =-5
Divide both sides by -5
y=1