Answer:
10a: △ABC is an Equilateral triangle with all acute angles.
10b: △BCD is A scalene triangle with all acute angles.
10c: △BDE is An Isosceles triangle with one obtuse angle.
Step-by-step explanation:
10) Looking at the diagram at the bottom left;
- △ABC has 3 equal internal angles and as such, it means it will have 3 equal angles.
Thus, we can classify it as; Equilateral triangle with all acute angles.
- △BCD has 3 unequal angles. Thus, it's 3 sides are not equal. Also all the angles are less than 90°.
We can classify it as;
A scalene triangle with all acute angles
- △BDE has 2 equal angles and one angle greater than 90°. This means it has 2 equal sides.
Thus, we can classify it as;
- An Isosceles triangle with one obtuse angle.
Answer:
16 hours
Step-by-step explanation:
velocity = distance / time => distance = velocity * time;
distance = 80 m/s * 12 hours
newVelocity = 60 m/s;
newVelocity = distance / newTime => newTime = distance / newVelocity = 80 m/s * 12 hours / (60 m/s) = (8/6) * 12 hours = 16 hours
Answer: 868 miles
Step-by-step explanation:
Given: The scale from a map to actual distance is 2.5 cm to 620 miles.
i.e. 1 cm on map = 
If the distance on the map between Chicago and Boston is about 3.5 cm.
Then, the actual distance between them = 
Hence, the approximate distance between Chicago and Boston = 868 miles.
Answer:
The answer is x = 5 square root of 27
Step-by-step explanation:
3x^5 = 81
3x^5 / 3 = 81 / 3
x^5 = 27
So the answer is x = 5 square root of 27
