Answer:
x=9
Step-by-step explanation:
since the location of 4x+2 and 7x-25 is across from each other that means that they are equal to each other so you have to set them equal to each other by doing 4x+2=7x-25 then you add like terms you add 25 and 2 together which gives you 27 and the equation will look like 4x+27=7x and then you subtract 4x from 7x which gives you 3x and u get the equation 27=3x now you divide 27 by 3 and get 9 so the equation will be x=9
36/2= 18 18x 3= 54
each Die has 18 possibles alone. Two dice has 36 possibles there for three dice has 54
Answer:
$ 584.89
Step-by-step explanation:
so each student is responsible for selling 12 necklaces...and there are 130 students....so thats (130 * 12) = 1560 necklaces
each necklace is 1.50....so thats (1560 * 1.50) = 2340
profit = revenue earned - expenses
profit = 2340 - 0.45 = 2339.55
1/4 of the profit goes to Puerto Rico
1/4 * 2339.55 = 2339.55/4 = 584.887 rounds to $ 584.89 <==
Answer:
D
Step-by-step explanation:
5n² - 8n - 21 → (5)(- 21) = -105 (find 2 numbers whose product is 105 and sum is -8)
= 5n² - 15n + 7n - 21
= 5n(n - 3) + 7(n - 3)
= (5n + 7)(n - 3)
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6n² + 53n - 79 → (6)( -79) = -474 (find 2 numbers whose product is -474 and sum is 53) DOES NOT EXIST! only factors are: (1, 474) (2, 237) (3, 158) (6, 79)
= Prime
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4n² - 25 (this is the difference of two squares)
= √(4n²) +/- √(25)
= 2n +/- 5
= (2n + 5)(2n - 5)
