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Pavel [41]
3 years ago
9

6.

Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
4 0

Answer:

A. b2 – 4ac = 7

Step-by-step explanation:

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Which is a irrational number<br> A. 0.277277277.....<br> B.0.333....<br> C.0.7<br> D.3.14
Alecsey [184]
A) This is a repeating decimal which means it is possible to write it in the form p/q where p & q are integers and q is nonzero. So we can rule out choice A.

B) Similar to the answer choice above, we have another repeating decimal. So we can rule out choice B. 

C) This is a terminating decimal. It does not go on forever. We can write this as a fraction (0.7 = 7/10). So we can rule out choice C.

D) This is also terminating so it seems like your teacher made a typo. What I'm thinking is that the 3.14 was meant to be a decimal that goes on forever without a pattern. This is a well known number called pi. I'm assuming that's what your teacher was going for. 

So I'd go with choice D as the answer. 


5 0
3 years ago
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Will give brainliest
Ostrovityanka [42]

\displaystyle\\\sum_{n=1}^7(4n+2)

6 0
4 years ago
What is 780 in scientific notation?
Yuki888 [10]
Scientific notation is
x*10^y such that
1<u><</u>x<10

780=7.8 times 100=7.8 times 10^2

7.8*10^2
4 0
4 years ago
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Write an equivalent expression in standard form.<br><br> (2x + 5)(x + 1)
Mrac [35]
2x^2+7x+5

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3 years ago
A manufacturer of shipping boxes has a box shaped like a cube. The side length is (5a + 4b). What is the volume of the box in te
Flura [38]

The volume of the cube would be S^3, where S is the length of the side.


Volume = (5a + 4b)^3

Which becomes:

(5a+4b)(5a+4b)(5a+4b)  

Multiply the first two sets of parenthesis by each other:

(25a^2+40ab+16b^2)(5a+4b)  

Now multiply that by the 3rd set of parenthesis to get:

125a^3+300a^2b + 240ab^2 + b^3

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3 years ago
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