<span>2x+y=8
2x+x-7=8
3x=15
x=5
y=5-7
y=-2</span>
The surface area of the triangular prism is of 140 cm².
<h3>What is the surface area of a prism?</h3>
It is the sum of the areas of all faces of a prism. In this problem, the prism has these following faces:
- One rectangle of dimensions 8 cm and 6 + 4 + 5 = 15 cm.
- Two right triangles with sides 4 cm and 5 cm.
For a rectangle, the area is given by the multiplication of the dimensions, hence:
Ar = 8 x 15 = 120 cm²
For each right triangle, the area is given by half the multiplication of the sides, hence:
At = 2 x 0.5 x 4 x 5 = 20 cm².
Then the surface area of the prism is:
S = 120 cm² + 20 cm² = 140 cm².
More can be learned about surface area at brainly.com/question/28123954
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Answer:
Length × Width is correct answer
The correct answer is B. -75 and 75.
Absolute value means the positive value of a number. Absolute value of -75 is 75. Absolute value of 75 is 75.
75 + 75 = 150.
(-3, 1.5)....simply add the x coordinates together, divide them by two, and then do the same for the y coordinates.
