Answer:
15√20/6√125
=√20/√5
=2
Step-by-step explanation:
Answer: 5 s
Step-by-step explanation:
Given
Height of the rocket can be modelled as 
Rocket will land on earth when it's height becomes 0
Neglecting 0 value
Thus, rocket remains in air for 5 s.
Answer:
25 students had soup for lunch
Step-by-step explanation:
Sandwich : soup
Of all students who purchased lunch this Thursday, 30 chose a sandwich
Let x = number of students who choose soup
Sandwich : soup = 30 : x
If the ratio of students who chose a sandwich to all of those who chose soup was 6:5
Sandwich : soup = 6 : 5
how many of the students had soup for lunch?
Equate both ratios
Sandwich : soup
30 : x = 6 : 5
30 / x = 6 / 5
Cross product
30 * 5 = x * 6
150 = 6x
Divide both sides by 6
x = 150 / 6
= 25
x = number of students who choose soup = 25 students
Answer:
200cm³
Step-by-step explanation:
Volume=
so 10×10×6=600
600÷3=200
