Answer:
2.04 seconds
Step-by-step explanation:
Falling objects near the surface of the earth have an acceleration of -9.81 m/s².
Acceleration is the change in velocity over change in time:
a = (v − v₀) / t
-9.81 = (-30.0 − (-10.0)) / t
-9.81 = -20.0 / t
t = 2.04
It takes 2.04 seconds.
29035 is a positive and -36198 is a negative
Answer:
3.6 is your Answer.
Step-by-step explanation:
In 7th grade:
red-hair students =58
another color hair students =609
In 8th grade:
red-hair students =60
Let's assume
another color hair students =x
now, we are given
The numbers of red-haired students in 8th grade are proportional to the numbers in 7th
so,

now, we can solve for x
we get

we get

so, students have another color hair in 8th grade is 630.........Answer
Answer:
X = 3
Step-by-step explanation:
Given the expression :7x - 3 = 18
To obtain the solution set ; we solve for X in the equation ;
7x - 3 = 18
Add 3 to both sides
7x - 3 + 3 = 18 + 3
7x = 21
Divide both sides by 7
7x / 7 = 21 / 7
x = 3
Hence, x = 3