C!
parallel line: m1 x m2 = -1
-3 x 1/3 = -1
Since the surface area of a prism is
A = 2lw + 2lh + 2wh
then the surface of the 1/3 scale key chain will be:
A = 2( l / 3 )( w / 3 ) + 2 ( l / 3 )( h / 3 ) + 2( w / 3 )( h / 3)
A = (2/9) ( lw ) + ( 2 / 9 ) ( lh ) + ( 2/9 ) ( wh)
A = ( 1 / 9 ) ( lw + 2lh + 2wh)
so the ratio <span>of the key chain to the book is 1/9</span>
Answer:
Step-by-step explanation:
A
Answer:
The speed of the truck is 42 mph
Step-by-step explanation:
we know that
The speed is equal to divide the distance by the time
Let
s -----> the speed in miles per hour
d ----> the distance in miles
t ----> the time in hours
step 1
Find out the distance traveled by the car at 7:00 P.M
we have
substitute the values
step 2
Find out the speed of the truck
we know that
At 7:00 P.M the distance is equal to
substitute
Answer:
Step-by-step explanation:
Given
See attachment
Solving (a):
To solve for , we make use of:
The relationship between both angles is that they are complementary angles
Make the subject
Substitute for
Solving (b):
To solve for , we make use of:
The relationship between both angles is that they are complementary angles
Solving (c):
To solve for , we make use of:
The relationship between both angles is that they are alternate exterior angles.
So: