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3 years ago

13

Is my answer correct???

1 answer:

Lorico [155]3 years ago

8 0

Answer:

yes you did do it right thanks for askings bye bye now

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Is √20 a rational or irrational number ?explain how you know

Nadusha1986 [10]

The square root of 20 is irrational.
42 is 16, less than 20 and 52 is 25, more than 20.

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3 years ago

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Divide: (5 + 4i) / (-3 – 2i)

Phantasy [73]

Answer:

<h2>-23/13 - 2/13i</h2>

Step-by-step explanation:

$\frac{5+4i}{-3-2i}\\\\\mathrm{Apply\:complex\:arithmetic\:rule}:\\\\\quad \frac{a+bi}{c+di}\:=\:\frac{\left(c-di\right)\left(a+bi\right)}{\left(c-di\right)\left(c+di\right)}\:=\:\frac{\left(ac+bd\right)+\left(bc-ad\right)i}{c^2+d^2}\\\\a=5,\:b=4,\:c=-3,\:d=-2\\\\=\frac{\left(5\left(-3\right)+4\left(-2\right)\right)+\left(4\left(-3\right)-5\left(-2\right)\right)i}{\left(-3\right)^2+\left(-2\right)^2}\\\\Refine\\=\frac{-23-2i}{13}\\\\$

$\mathrm{Rewrite\:}\frac{-23-2i}{13}\mathrm{\:in\:standard\:complex\:form:\:}-\frac{23}{13}-\frac{2}{13}i\\$

8 0

3 years ago

What is the distance between the coordinates C(-5,-3) D(-4,-2) rounded to the nearest tenth if necessary.

vodomira [7]

I got 1.4 for this one..............

6 0

4 years ago

PLEASE HELP WILL GIVE BRAINLY AND 5.0 RATING

gavmur [86]

Answer:

the distance is 12.6

Step-by-step explanation:

By plugging the x and y values of each coordinate into the distance formula, we get the answer

3 0

3 years ago

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Mary says the pen for her horse is an acute right triangle. Is this possible? EXPLAIN!!!

exis [7]

we know that

An <u>acute triangle</u> is a triangle with all three angles acute (less than $90\°$ ).

An <u>obtuse triangle</u> is one with one obtuse angle (greater than $90\°$ ) and two acute angles.

A <u>right triangle</u> is one with one right angle (angle equal to $90\°$ ) and two acute angles.

therefore

The answer is

Is not possible

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3 years ago

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