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GrogVix [38]
3 years ago
6

Steps to solve1/2 / 2/-5 + (-1/4)​

Mathematics
2 answers:
NARA [144]3 years ago
7 0

Answer:

-3/2

Step-by-step explanation:

this is a answer first u dived then plus

murzikaleks [220]3 years ago
7 0

Answer:

  -3/2

Step-by-step explanation:

(1/2)/(2/-5) +(-1/4) = (1/2)·(-5/2) -(1/4) . . . . invert the denominator and multiply

  = -5/4 -1/4 = -6/4 . . . . . . . . . . . . . . . . . .add the two terms

  = -3/2 . . . . . reduce the fraction

_____

<em>Comment on fraction division</em>

There are two ways to divide fractions. In the end, they amount to the same thing.

<u>One</u>: multiply by the inverse of the denominator:

  (a/b) / (c/d) = (a/b)·(d/c) = (ad)/(bc)

<u>Two</u>: adjust the denominators to be the same, then use the ratio of numerators:

  (a/b) / (c/b) = a/c

__

Here, we could rewrite the fractions as ...

  (5/10) / (-4/10) = -5/4 . . . . using method two

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Answer:

Factoring

Step-by-step explanation:

x^2-5x+6=0

x^2-2x-3x+6=0

x(x-2)-3(x-2)

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2 years ago
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Vinil7 [7]
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2 years ago
What is the converse of the following conditional statement? If x = –10, then x2 = 100
tangare [24]
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8 0
3 years ago
Which expression shows 12 more than the quotient of 63 and 9.
Black_prince [1.1K]
Hello!

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Hope this helps!
5 0
3 years ago
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A small motorboat travels 12mph in still water. It takes 2 hours longer to travel 46 miles going upstream than it does going dow
Natasha_Volkova [10]

Using the relation between velocity, distance and time, it is found that the rate of the current is of 3.33 mph.

<h3>What is the relation between velocity, distance and time?</h3>

Velocity is distance divided by time, hence:

v = d/t

A small motorboat travels 12mph in still water. With the current, upstream, 46 miles are traveled in t hours, hence:

12 + r = 46/t

r = 46/t - 12

Downstream, the time is of t + 2 hours, hence:

12 - r = 46/(t + 2)

r = 12 - 46/(t + 2)

Hence, equaling the values for r:

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Using a quadratic equation calculator, the solution is t = 3. Hence the rate is found as follows:

r = 46/t - 12 = 46/3 - 12 = 3.33 mph.

More can be learned about the relation between velocity, distance and time at brainly.com/question/28155966

#SPJ1

4 0
2 years ago
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