Answer: 9 (2x + 1)
Step-by-step explanation: i hope i helped
Answer:
The sum of this entire line is 180, so to solve this we would subtract 20 from 180, which means x = 160.
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Solution :
It is given that Little Snail is going to visit one of his friend at the pond which is 3 miles away.
When the snail crawls 1/2 of a mile per day, it will take him, 
= 6 days to get to the next pond.
When the snail crawls 1/3 of a mile per day, it will take him, 
= 9 days to get to the next pond.
When the snail crawls 1/4 of a mile per day, it will take him, 
= 12 days to get to the next pond.
When the snail crawls 3/4 of a mile per day, it will take him, 
= 4 days to get to the next pond.
When the snail crawls 2/3 of a mile per day, it will take him, 
= 4.5 days to get to the next pond.
Answer:
Step-by-step explanation:
It’s (1,4)
If the triangles are similar then the angles in both are equal. Let's look at each set individually:
(1) Triangle 1: 25°, 35°
Triangle 2: 25°, 120°
Now it may be hard to tell if the triangles are similar at the moment so we must calculate the third angle in each triangle (The angles in a triangle add up to 180°, therefor the missing angle = 180 - (given angle 1 + given angle 2)
Triangle 1: 180 - (25 + 35) = 120°
Triangle 2: 180 - (25 + 120) = 35°
Now writing out the set of angles again we have:
Triangle 1: 25°, 35°, 120°
Triangle 2: 25°, 120°, 35°
So in fact Triangle 1 and 2 are similar.
Now we can repeat this process for (2) - (5):
(2) Triangle 1: 100°, 60°, 20°
Triangle 2: 100°, 20°, 60°
This pair is also similar
(3) Triangle 1: 90°, 45°, 45°
Triangle 2: 45°, 40°, 95°
This pair is not similar
(4) Triangle 1: 37°, 63°, 80°
Triangle 2: 63°, 107°, 10°
This pair is not similar
(5) Triangle 1: 90°, 20°, 70°
Triangle 2: 20°, 90°, 70°
This pair is similar
Therefor pairs (1), (2) and (5) are similar
