Answer:
Option C. 
Step-by-step explanation:
we know that
The volume of the solid Eva created is equal to the volume of the triangular prism minus the volume of the rectangular prism notch
step 1
<em>Find the volume of the triangular prism</em>
The volume is equal to
where
B is the area of the triangular base
h is the height of the triangular prism
substitute
step 2
Find the volume of the rectangular prism notch
The volume is equal to
step 3
Find the volume of the solid Eva created
X = 1
y = -4
xy = (1)(-4) = -4
answer
C) -4
double check:
y - 4 = 4x + 3y = -(9-x)
-4 - 4 = 4(1) + 3(-4) = -(9 - 1)
- 8 = -8 = -8
The answer is true i had the same question
Answer:
1
Step-by-step explanation:
he cant earn 400 dollars because 8*40 is 320. if he cant work more than eight hours, theres no possible way he can earn 400 dollars ('least in a math equation).
Answer:
-21/5 or -4.2
Step-by-step explanation:
y = 2x + 6
3y - x + 3 = 0
Substitute the value for y from the first equation into the second equation. Solve for x.
3y - x + 3 = 0
3(2x + 6) - x + 3= 0
6x + 18 - x + 3 = 0
5x + 18 + 3 = 0
5x + 21 = 0
5x + 21 - 21 = 0 - 21
5x = -21
x = -21/5 or -4.2
