There are 16 ways to arrange the row so that at least 3 girls always sit next to each other.
You can’t really find the sum unless there is number to plug in for the variables.
X² = hyp² - cat²
x² = 625 - 156.25
x² = 468.75
x ≈ 21,6
The two numbers are 31 and 35.
Step-by-step explanation:
Let,
one number = x
2nd number = y
According to statement;
x+y=66 Eqn 1
y=x+4 Eqn 2
Putting y=x+4 from Eqn 2 in Eqn 1;
The two numbers are 31 and 35.
Keywords: Linear equation, Addition
Learn more about linear equations at:
#LearnwithBrainly
<u>We are given:</u>
The function: y = -16t² + 64
where y is the height from ground, t seconds after falling
<u>Part A:</u>
when the droplet would hit the ground, it's height from the ground will be 0
replacing that in the given function:
0 = -16t² + 64
16t² = 64 [adding 16t² on both sides]
t² = 4 [dividing both sides by 16]
t = 2 seconds [taking square root of both sides]
<u>Part B:</u>
for second droplet,
height from ground = 16 feet
time taken = t seconds
acceleration due to gravity = 10 m/s²
initial velocity = 0 m/s
h = ut + (1/2)at² [second equation of motion]
16 = (0)(t) + (1/2)(10)(t²)
16 = 5t²
t² = 16/5
t = 1.8 seconds (approx)
Therefore, the second droplet takes the least amount time to hit the ground
