Answer:
x = -2, y = 2
Step-by-step explanation:
-7x + 7y = 28
7y = 28 + 7x
y = 4 + x ----(1)
-8x+4y=24 -----(2)
sub (1) into (2)
-8x+4(4+x)=24
-8x+16+4x = 24
-8x+4x = 24-16
-4x = 8
x = -2
sub x = -2 into (1)
y=4+(-2) = 2
The total cost of the item with sales tax will be $ 381.6.
<h3>What is Algebra?</h3>
The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
An item cost $360 before tax and the sale tax is 21.60.
Then the total cost of the item with sales tax will be
Total cost = 360 + 21.6
Total cost = $ 381.6
More about the Algebra link is given below.
brainly.com/question/953809
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Answer:
Step-by-step explanation:
Volume of a Rectangular Prism is :
For,
The Height of the rectangular prism is: 
Answer:
Do you know the answer I have the same question..?
Step-by-step explanation:
If you would like to solve (5d^2 + 4d - 3) - (3d^2 - 2d + 4), you can calculate this using the following steps:
(5d^2 + 4d - 3) - (3d^2 - 2d + 4) = 5d^2 + 4d - 3 - 3d^2 + 2d - 4 = 2d^2 + 6d - 7
The correct result would be <span>2d^2 + 6d - 7.</span>
