Answer:
.
Step-by-step explanation:
5x + 3y = 26 (times 6) 30x + 18y = 156
6x + 7y = 21 (times 5) 30x + 35y = 105
.
30x + 18y = 156
<u>30x + 35y = 105 </u> <u> </u>
-17y = 51
y = -3
.
Substitute the value of y to one of equations
6x + 7y = 21
6x + 7(-3) = 21
6x - 21 = 21
6x = 21 + 21
6x = 42
x = 7
Option C: is the surface area of the rectangular prism
Explanation:
The height of the rectangular prism is 5 cm
The width of the rectangular prism is 10 cm
The depth of the rectangular prism is 4 cm
We need to determine the surface area of the rectangular prism.
The surface area of the rectangular prism can be determined using the formula,
Substituting ,
and
in the formula, we get,
Multiplying the terms within the bracket, we have,
Adding all the values within the bracket, we get,
Multiplying, we have,
Thus, the surface area of the rectangular prism is
Hence, Option C is the correct answer.