Answer:
4
Step-by-step explanation:
72-36=36
36÷9=4.........
Suppose that Eldi has x years old now :
x + 4 = 3 × ( x - 10 )
x + 4 = 3x - 30
Add both sides 30
x + 4 + 30 = 3x - 30 + 30
x + 34 = 3x
Subtract both sides x
x - x + 34 = 3x - x
34 = 2x
2x = 34
Divide both sides by 2
2x ÷ 2 =34 ÷ 2
x = 17
_____________________________
Thus Eldi is 17 .
Answer:
D. 43°
Step-by-step explanation:
interior angle to 90°=90°
interior angle to 133°=47°
p=180°-47°-90°=43°
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It's true, assuming that angles 1 and 2 are are at the intersection of line t and l/m