Because both of the equations = s, we can set them equal to each other.
c + 7 = 2c - 13. Now we can solve for c. Once you have found c, you can substitute it back into either of the two original equations and solve for s.
Answer:
X= 2/5 y=-2
Step-by-step explanation:
5x + 2y = -2
3x - 5y = 11.2
Using the elimination method
Multiply equation 1 by 3
Multiply equation 2 by 5
15x + 6y = -6
15x - 25y = 56
Subtrat 3 from 4
-31y= 62
Divide both sides by -31
y= -2
To arrive at x, substitute y= -2 in equation 1
5x + 2y = -2
5x + 2(-2)= -2
5x -4 = -2
Collect like terms
5x= -2+4
5x= 2
Divide both sides by 5
x= 2/5
Answer:
300 square inches
Step-by-step explanation:
Given: Height of the pyramid is 9 inches and base area of the pyramid is 100 square inches
To find: volume of the pyramid
Solution:
A pyramid is a three geometrical shape that has a base and three or more triangular faces that meet at a point.
Height of the pyramid (h) = 9 inches
Base area of the pyramid (A) = 100 square inches
Volume of the pyramid =
Sales tax of $785 is $54.95.
Next you add that to the price of the dining set.
The cost of the dining set, after sales tax is $839.95
Hope this helps!