Answer:
x = ± 2
Step-by-step explanation:
Given
x² + 5 = 3x² - 3 ( subtract x² + 5 from both sides )
0 = 2x² - 8 ( add 8 to both sides )
8 = 2x² ( divide both sides by 2 )
4 = x² ( take the square root of both sides )
x = ±
= ± 2
Answer:
choice 2) area = 319.2 in²
Step-by-step explanation:
triangular ends = 6.9 x 8 = 55.2
sides = 3 x 8 x 11 = 264
264 + 55.2 = 319.2 in²
Answer:
7 oz, 13 sandwiches, 22.75 oz, and 30.33 oz.
Step-by-step explanation:
Answer:
Step-by-step explanation:
11C4 = 11! / (7!*4!) = 11 * 10 * 9 * 8 * 7!/ 7! * 4!
11C4 = 11*10 * 9 * 8 / 24
11C4 = 11*10 * 3
11C4 = 330
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You can't do the second one. Permutations and Combinations always give an answer greater than 1 and integers.