The surface area of the rectangular prism will be 254 square inches. Then the correct option is D.
<h3>What is the surface area of the rectangular prism?</h3>
Let the prism with a length of L, a width of W, and a height of H. Then the surface area of the prism is given as
SA = 2(LW + WH + HL)
A rectangular prism with a length of 7 inches, a width of 9 inches, and a height of 4 inches.
Then the surface area of the rectangular prism will be
SA = 2 (7 x 9 + 9 x 4 + 4 x 7)
SA = 2 (63 + 36 + 28)
SA = 2 x 127
SA = 254 square inches
Then the correct option is D.
More about the surface area of the rectangular prism link is given below.
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Answer:
15 49-cent stamps
Step-by-step explanation:
We can solve this problem with the equations <em>0.49(x) + 0.21(y) = 9.45 </em>and <em>x - 5 = y</em>. Well, 0.49(15) + 0.21(10) = 9.45, so we know that there are 15 49-cent stamps and 10 21-cent stamps. The question is asking for the number of 49-cent stamps, so we can tell Travis bought 15 49-cent stamps.
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F = .7p
add the original discount of 50% to the additional of 20%. the total discount is 70%. multiply the 70% (.7 as a decimal) by the original price (p) to find the final price (f).
