Answer: 7.5 minutes (7 min 30 sec)
Step-by-step explanation: If it takes it 3 minutes to travel 2 km, it would take it 1.5 minutes to travel 1 km. So, 1.5 * 5 = 7.5, meaning it would take it 7.5 min to travel 5 km.
Answer:
56.57
Step-by-step explanation:
The formula for the circumference of a circle is C=2∏r, in which r=radius. To find the radius, then, we insert 18 in for the circumference. So 18=2∏r
Answer:
1. 36 rocks in total.
2. 15 purple rocks more than blue rocks
Step-by-step explanation:
1. Purple rocks are of all rocks, then the remainder is of all rocks.
2. Blue rocks are of the remainder, then blue rocks are
of all rocks.
3. Silver rocks are the rest, that is
of all rocks.
4. It is known that the number of silver rocks is 3, then if x is the number of all rocks, of x is 3:
Hannah has 36 rocks in total. 3 of them are silver, are blue and are purple. Then she has more purple rocks than blue.
Answer:
The second choice
Step-by-step explanation: