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Ivenika [448]
3 years ago
9

Solve by the substitution method 2x + 9y=41 - 4x + y=13

Mathematics
1 answer:
melisa1 [442]3 years ago
6 0

Answer:

x=-2, y=5. (-2, 5).

Step-by-step explanation:

2x+9y=41

-4x+y=13

---------------

2(2x+9y)=2(41)

-4x+y=13

-----------------------

4x+18y=82

-4x+y=13

------------------

19y=95

y=95/19

y=5

2x+9(5)=41

2x+45=41

2x=41-45

2x=-4

x=-4/2=-2

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Suppose that the weight (in pounds) of an airplane is a linear function of the amount of fuel (in gallons) in its tank. When car
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Step-by-step explanation:

Suppose that the weight (in pounds) of an airplane is a linear function of the amount of fuel (in gallons) in its tank. When carrying 15 gallons of fuel, the airplane weighs 2187 pounds. When carrying 35 gallons of fuel, it weighs 2303 pounds. How much does the airplane weigh if it is carrying 50 gallons of fuel?

----

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----

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====================

6 0
3 years ago
Explain how you can use base ten blocks to find 2.16 divided by 6
Studentka2010 [4]
<span>How to use base 10 blocks in dividing 2.16 by 6
=> how many 6s are there in 2.16. Let’s try
let’s try the blocks of
=> 1 =  IIIIIIIIIIIIIIIII = 17 6s (16.666.. * 6)
=> 2 = approximately 33 6s (33.33… * 6)
=> .16 = 0.27 6s or 3
=> 33 + 3 = 36 6s in 2.16
=> 2.16 / 6 = 0.36
Thus, there are 36 6s in 2.16 numbers. </span>



6 0
4 years ago
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