Answer:
y = - 5x + 3
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
y = - 5x - 1 is in this form
with slope m = - 5
• Parallel lines have equal slopes
The only equation from the list with m = - 5 is
y = - 5x + 3
The area of a circle is πr².
First we will solve for r, radius, and then double it to find the diameter.
153.86 = (3.14)(r)²
49 = r²
√49 = r
7 = r
Now the diameter:
7*2 = 14
So the diameter is 14 units.
Hope this helps :)
Answer:
2.106 m/sec
Step-by-step explanation:
An astronaut drops a feather on the moon and it took 1.3 seconds to reach the surface.
Now, it is given that, the free-fall acceleration on the moon is 1.62 m per sec².
There is a relation for moving body under acceleration due to gravity that,
v = u+ gt .......(1), where, v and u are the final and initial velocities of the falling body under acceleration due to gravity g and t is the time of travel.
Therefore, in our case, u =0 as there is free fall, g =1.62 m/sec² and t= 1.3 secs.
Hence, the velocity of the feather just before hitting the lunar surface(v) will be given by v = 0+ 1.62 ×1.3 =2.106 m/sec.
{Using the formula (1)} (Answer)