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Ulleksa [173]
3 years ago
9

Can you please do 41 ,42 , 44 and 45

Mathematics
1 answer:
patriot [66]3 years ago
5 0

Answer:

41. 1/144

42. 6

44. C

45. D

Step-by-step explanation:

41. Chance of rolling one twelve is 1/12. Then, the chance of rolling 2 is 1/12*1/12 = 1/44

42. Since there are 25 students in the class, the middle value, 13, will be the median. The 13th number is a 6, therefore, the median is a 6.

44. We know that this is a triangle because 50+50+80=180 (triangle sum theorem). Since this works, by the principles of simular triangles, we can have infinite number the triangles which warrants the solution of more than 1.

45. x is negative so it is less than 0. However, y is greater than OR equal to 0. This means we can have two solutions. z is negative or z is 0.

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2 years ago
How can I factorise (2x cubed - 5x + 3) ?
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therefore\\x=\frac{-2\pm\sqrt{2^2-4(2)(-3)}}{2(2)}=\frac{-2\pm\sqrt{4+24}}{4}=\frac{-2\pm\sqrt{28}}{4}=\frac{-2\pm\sqrt{4\cdot7}}{4}=\frac{-2\pm2\sqrt7}{4}\\\\=\frac{-1\pm\sqrt7}{2}\\\\so,\ the\ answer:\\\\(x-1)\cdot2\left(x-\frac{-1-\sqrt7}{2}\right)\left(x-\frac{-1+\sqrt7}{2}\right)\\\\=\boxed{(x-1)(2x+1+\sqrt7)\left(x+\frac{1-\sqrt7}{2}\right)}=\boxed{\frac{1}{2}(x-1)(2x+1+\sqrt7)(2x+1-\sqrt7)}
7 0
3 years ago
Read 2 more answers
Can someone please help me on this problem
Dafna1 [17]

Answer:

Step-by-step explanation:

Perimeter is all sides added together.

l is length, w is width, and P is perimeter.

2l + 2w = P\\2(5x) + 2(x - 3) = 42\\10x + 2x - 6 = 42\\12x - 6 = 42\\12x = 48\\x = 4

5 0
4 years ago
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What is 7 and a half hours + 6 and 3/4 hours + 7 and 1/3 hours ?
Korolek [52]
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convert bottom nubmer to same (12)
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3/4 times 3/3=9/12
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answer is 21 and 7/12 hour or 21.58 hour or 21 hour and 35 minutes
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3 years ago
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