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3 years ago

What is the additive identity for rational numbers?

Mathematics

2 answers:

OverLord2011 [107]3 years ago

8 0

Answer:

questions:What is the additive identity for rational numbers?ans:0

Vanyuwa [196]3 years ago

4 0

Answer:

Step-by-step explanation:

The rational number 0 is the additive identity for rational numbers.

As,

If we add any rational number to zero we get that number itself.

E.g.

$0 + \frac{1}{2} = \frac{1}{2}$

and

$0 + ( - \frac{5}{6} ) = ( - \frac{5}{6} )$

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3 years ago

17(w-4) +3w -27 Helpppo

Simora [160]

Answer:

w = 19/4

Step-by-step explanation:

Solve for w:

-27 + 17 (w - 4) + 3 w = 0

17 (w - 4) = 17 w - 68:

17 w - 68 + 3 w - 27 = 0

Grouping like terms, 17 w + 3 w - 68 - 27 = (17 w + 3 w) + (-27 - 68):

(17 w + 3 w) + (-27 - 68) = 0

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20 w + (-27 - 68) = 0

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20 w + -95 = 0

Add 95 to both sides:

20 w + (95 - 95) = 95

95 - 95 = 0:

20 w = 95

Divide both sides of 20 w = 95 by 20:

(20 w)/20 = 95/20

20/20 = 1:

w = 95/20

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Answer: w = 19/4

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3 years ago

Find the area to the right of the z-score 1.39 and to the left of the z-score 1.53 under the standard normal curve.1.2 1.3 1.4 0

svetoff [14.1K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value is $P( 1.39 < z < 1.53 ) = 0.0193$

Step-by-step explanation:

From the question we are told to obtain the area to the of the z-score 1.39 and to the left of the z-score 1.53, this is mathematically represented as

$P( 1.39 < z < 1.53 ) = P( z < 1.53 ) - P( z < 1.39 )$