D. 25in
EXPLANATION: 1:4 * 5= 1:20in
1:5 * 5= 1:25in
490J
Step-by-step explanation:
Given parameters:
Mass of rock = 5kg
Height of hill = 10m
Unknown:
Potential energy at the hilltop = ?
Solution:
Potential energy is the energy at rest of a body. it is given as:
P.E = mgh
m is the mass of the body
g is the acceleration due to gravity = 9.8m/s²
h is the height of the hilltop
P.E = 5 x 10 x 9.8 = 490J
Learn more:
Potential energy brainly.com/question/10770261
#learnwithBrainly
Since we know that all angles in a triangle add up to , we can solve for and substitute it back into to find .
Remove the parentheses and combine like terms.
Add to both sides of the equation.
Divide both sides of the equation by .
Now that we have the value of , we can substitute it back into to find .
V=3/2.
I hope this helps. :)
Answer:
y = -5x + 9
Step-by-step explanation:
Slope-intercept form of an equation is:
y = mx + b
Since they gave you the slope and y-intercept, it is kind of a fill-in-the-blank problem. Nothing to calculate!
Fill in the slope for the m. Fill in the y-intercept for the b.
y = -5x + 9