Find the values for x and y
2 answers:
Both form straight angles, which are 180 degrees. x+4y+x+y=180 2x+5y=180 4x+y=180 Solve the second equation for y and substitute the variable. y= -4x+180 2x+5(-4x+180)=180 2x-20x+900=180 -18x= -720 x=40 Plug the x value in 4(40)+y= 180 160+y=180 y=20 Final answer: x=40, y=20
X+4y+x+y= 4x+y=180 simplify by adding like terms 2x+5y= 4x+y=180 Subtract y from each side 2x+4y=4x=180 Subtract 2x from each side 4y=2x=180 y=180/4=45 x=180/2=90
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12kilometers If 2cm=8km, 1cm=4km Multiply both by three and you get that 3cm=12km
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Find the range for the function k(n) = 2n2 when D = {–2, 1, 3}. R = {2, 8, 18} R = {2, 18, 36} R = {4, 12, 27} R = {4, 12, 16}
lianna [129]
K(n) = 2n^2.....where domain (n) = -2 k(-2) = 2(-2^2) = 2(4) = 8 k(n) = 2n^2.....where n = 1 k(1) = 2(1^2) = 2(1) = 2 k(n) = 2n^2...where n = 3 k(3) = 2(3^2) = 2(9) = 18 so ur range k(n) = { 2,8,18}
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