3 questions i really need help
1.
(07.01)
Which of the values in the set {3, 4, 5, 6} is a solution to the equation 4x + 2 = 22? (4 points)
3
4
5
6
2.
(07.01)
Which of the values for x and y make the equation 3x + 4y + 6 = 26 true? (4 points)
x = 4, y = 2
x = 5, y = 6
x = 4, y = 3
x = 3, y = 5
3.
(07.01)
Which of the following sets shows all the numbers from the set {0, 0.5, 1, 2.5, 3} that make the inequality 2a + 3 ≥ 8 true? (4 points)
{2.5, 3}
{1, 2.5, 3}
{0, 0.5, 1}
{0.5, 1}
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OpenStudy (welshfella):
1
you can either solve the equation 4x + 2 = 22
or plug in the values 3,4, 5 and 6 in turn into the equation to see which one fits.
OpenStudy (acespeedfighter):
think its 4
OpenStudy (acespeedfighter):
i mean 6
OpenStudy (welshfella):
solving this is easy
4x + 2 = 22
subtract 2 from both sides
4x = 20
now divide both sides by 4
x = ?
OpenStudy (acespeedfighter):
so 5
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OpenStudy (welshfella):
right
OpenStudy (acespeedfighter):
ahh ok i see
OpenStudy (acespeedfighter):
thx for the help :D
OpenStudy (acespeedfighter):
(facepalm)
OpenStudy (acespeedfighter):
i forgot i had another question
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