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attashe74 [19]
3 years ago
9

What is the value of the expression x + (–y) when x = –3.8 and y = 1.7?

Mathematics
2 answers:
Sphinxa [80]3 years ago
7 0
-3.8 + (-1.7) =   -3.8 - 1.7 

-5.5     the answer is D 
topjm [15]3 years ago
7 0
D. -5.5

x + (-y)
(-3.8) + (-1.7)
= -5.5

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First, you multiply 1.2 to 4 to get 4.8. Then, since the 4 wasn't 4 but 0.4, you have to divide 4.8 by 10 to get 0.48. Finally, since -1.2 is negative, you put a negative sign in front of 0.48 to get -0.48.

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After two consecutive years of 5% rates of return, what rate of return in the third year will produce a cumulative gain of 16%?
murzikaleks [220]

Using decimal multipliers, it is found that a rate of return of 5.2% in the third year will produce a cumulative gain of 16%.

The <u>decimal multiplier</u> for a increase of a% is given by:

M = \frac{100 + a}{100}

In this problem, two increases of 5%, thus:

M = \frac{100 + 5}{100} = 1.05

Another of x, that we want to find, and the result is a increase of 16%, thus:

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The three increases(5%, 5% and x%) result in a increase of 16%, thus:

1.05(1.05)(x) = 1.16

x = \frac{1.16}{(1.05)^2}

x = 1.052

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A rate of return of 5.2% in the third year will produce a cumulative gain of 16%.

A similar problem is given at brainly.com/question/21806362

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