Answer:
2n - 3
Step-by-step explanation:
twice means multiply by 2
decreased by 3 means subtract 3
"a number" n
"twice a number" 2n
"twice a number decreased by 3" 2n - 3
Answer:
<h3>
She reaches her maximum height after 0.25 seconds</h3>
Step-by-step explanation:
The question is not properly structured and the equation is also incorrect. Here is the correct question.
You and some friends went to a haunted house on Halloween. The mummy scared one friend so much that she jumped into the air! The equation h= -4t²+ 2t models her jump where h is her jumps height in feet t seconds after the mummy scares her. When did she reach her maximum.
Give the equation h= -4t²+ 2t that models my friend jump where h is her jumps height in feet t seconds, At maximum height, her velocity will be zero i.e
Vmax = 0m/s
Velocity is the rate of change in distance of a body i.e V = dh/dt
Given h= -4t²+ 2t
V = dh/dt = -8t+2
Since v = 0m/s
0 = -8t+2
-8t = -2
t = -2/-8
t = 0.25 secs
She reaches her maximum height after 0.25 seconds
First p=23 and because if u do the math right that is what u should get
Answer:
The values of x are:
Step-by-step explanation:
Given the expression
Expand (x - 2)² = x² -4x + 4
Expand: -6(x - 2) = -6x + 12
simplifying
Factor x² -10x + 21: (x - 3) (x - 7)
Using the zero factor principle
if ab=0, then a=0 or b=0 (or both a=0 and b=0)
solving x - 3 = 0
x - 3 = 0
Adding 3 to both sides
simplify
x = 3
solving x - 7 = 0
x - 7 = 0
Adding 7 to both sides
Simplify
x = 7
Therefore, the values of x are:
1 nanometer = 1 * 10^9 meters
so 1 nanometer = 1 * 10^7 centimeters
375 nanometers = 3,75 * 10^5 centimeters