Step-by-step explanation:
a)

b)

Answer:

Step-by-step explanation:
To find
, we need to eliminate
in this system of equations:
(1)
(2)
From (1) and (2):


Then, we equalize both expressions and solve for
:




Answer:
73 and -23 hope this helped hon :)
Step-by-step explanation:
y=-8x+9
plug in -8
y=-8(-8)+9
y=64+9
y=73
y=-8x+9
plug in 4
y=-8(4)+9
y=-32+9
y=-23
Answer:
yes.
Step-by-step explanation:
For the bottom, to find the top side of the triangle, 10-4, as seen from the top and bottom sides of the rectangle. So 6.
To find the left side of triangle, subtract 12 from 8. 12 from the left and 8 from the rectangle. This gives you 4.
Now that we have 6 and 4, we can find the area:
A= ab/2
A= (6*4)/2
A=24/2
A=12 mm^2