Evaluate when x = 3 and y = 4. 1/3x -8y
1 answer:
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Answer:
x = 72 , y = 108
Step-by-step explanation:
2x and are adjacent angles on a straight line and sum to 180° , that is
2x + = 180 ( multiply through by 2 to clear the fraction )
4x + x = 360
5x = 360 ( divide both sides by 5 )
x = 72
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=
= 36
and
are vertically opposite and are congruent , then
= 36 ( multiply both sides by 3 )
y = 108
Answer:
a) x = 260
b) g = 218
c) z = 30
d) h = 5
Step-by-step explanation:
a)
Predict a number; let's say x = 225
Too low; try with a higher number; let's say x = 270
Too high, we're closer.
x = 260
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b)
let's say g = 230
Too high. Try g = 221
We're almost there. Let's try with g = 218
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c)
Let's try with z = 15
Too low; try a higher number. z = 30
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d)
Let's try with h = 6
Too high; let's try with h = 5