2x+4y=450
2x=450-4y
x=450-4y÷2----- equation 1
4x+2y=420
4x=420-2y
x=420-2y÷4----- equation 2
putting the value of x in equation 1
x=450-4y÷2
420-2y÷4=450-4y÷2
2(420-2y)=4(450-4y)
840-4y=1800-16y
840-1800=-16y-4y
-960= -12y
y=80
putting the value of y in equation1
2x+4y=450
2x+4×80=450
2x+320=450
2x=450-320
2x=130
x=130÷2
x=65
<h2> the value of x is 65 and y is 80</h2>
Answer in fraction form is exactly 2/27
Answer in decimal form is approximately 0.07407
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Explanation:
4 people play both,9 play flat flute only, 12 play piano only.
So 4+9+12 = 13+12 = 25 people play one instrument only or they play both.
We have 27 people total meaning that 27-25 = 2 play neither instrument.
Divide the values 2 and 27 to get
2/27 = 0.07407
this value is approximate (rounded to five decimal places)
Answer:
one qt is 2 pints
Step-by-step explanation:
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It is 4 if you see in the bottom part the line stops at -4 that's why hope it helps
