Answer:
choice 6) 2
Step-by-step explanation:
Answer:
Step-by-step explanation:
If the rate is x, then the rate of the return is x+25. In both trips, he has 40 miles to travel, therefore, it will take 40/x hours in the first trip and 40/x+25 for the return. As a consecuence
Also,
This means that if he starts at 30 miles per hour, it will take a bit more than 1 hour to be there: 1 hour and 20 minutes in the first trip, and a bit more than 40 minutes (40/55 hours) in the return.
The angle that defines the arc is 1.57 radians or 90°.
<h3 /><h3>How to get the angle of the arc?</h3>
For a circle of radius R, the length of an arc defined by an angle θ in radians is given by:
L = θ*R.
Here we know that the radius is R = 7cm, and the length of the arc is 10.99 cm. Replacing these in the above equation:
10.99 cm = θ*7cm
θ = (10.99 cm/7 cm) = 1.57
Then the angle is 1.57 radians. Remember that:
3.14 radians = 180°
Then:
θ = (1.57/3.14)*180° = 90°
If you want to learn more about arcs:
brainly.com/question/2005046
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Answer:
x=20
Step-by-step explanation:
20+12=32
Answer:
5. 27
6. 37
7. 57
8. 1
Step-by-step explanation:
the angles all add up to 180
5. 100 + 53 = 153
180 - 153 = 27
6. 99 + 44 = 143
180 - 143 = 37
7. 61 + 62 = 123
180 - 123 = 57
8. 89 + 90 = 179
180 - 179 = 1
