Parallel lines s and t are cut by a transversal r. Parallel lines s and t are cut by transversal r. Clockwise from top left, the
angles formed with r and s are 1, 2, 3, 4; the angles formed with r and t are 5, 6, 7, 8. Which angles are corresponding angles? Angle3 and Angle7 Angle1 and Angle7 Angle4 and Angle6 Angle1 and Angle8
2 answers:
Answer:
Option A.
Step-by-step explanation:
Consider the below figure attached with this question.
Corresponding angles : If a transversal line intersect two parallel lines, then it makes 4 angles at each intersection point. The angles with same relative position at each intersection is know as corresponding angles.
From the clear figure it is clear that the pair of corresponding angles are:
Therefore, the correct option is A.
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Answer:
a). 59.049°C
b). 2.1179 seconds
Step-by-step explanation:
Expression representing the final temperature after decrease in temperature of the metal from 100°C to T°C is,
T =
where x = duration of cooling
a). Temperature when x = 5 seconds
T = 100(0.9)⁵
= 59.049
≈ 59.049°C
b). If the temperature of the metal decreases from 100°C to 80°C
Which means for T = 80°C we have to calculate the duration of cooling 'x' seconds
80 =
0.8 =
By taking log on both the sides
log(0.8) =log[]
-0.09691 = x[log(0.9)]
-0.09691 = -0.045757x
x =
x = 2.1179
x ≈ 2.1179 seconds