Answer:
137
Step-by-step explanation:
2(-9)^2+5(-9)+20
2(81)-45+20
162-45+20
117+20
137
3600 meters 60 seconds would be 1440 traveled
and 1440 + 1440 + 720= <u>3600</u>
Hope this helps :)
Answer:
area (A) =(9x+108)unit^2
perimeter (P) =(2x+42) units
Step-by-step explanation:
area(A) =length(l) × breadth(b)
perimeter(P) =2(l+ b) {which is sum of all sides}
so, l = 7+x+5 = (x+12) units and b = 9 units
now, A=(x+12) × 9 units^2
=(9×x + 12×9 ) units^2
Therefore,
A =(9x+108)unit^2
next, P=2{(x+12)+9}
=2(x+21)
Hence,
P=(2x+42) units
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:
Answer: A'(-3, 7), B'(3, 6), C'(-7, -2)
Step-by-step explanation:
Reflecting over y = x maps (x,y) onto (y,x).
