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3 years ago

Use the grouping method to factor x^3+x^2+5x+5

Mathematics

2 answers:

Marianna [84]3 years ago

6 0

Answer: MARK BRAINLIEST

23x

Step-by-step explanation:

x^3+x^2+5x+5 = 23x

Amiraneli [1.4K]3 years ago

4 0

Answer:

The answer would be

Step-by-step explanation:

(x-1)(x^2+5)

I hope this helps

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What number must be added to the expression for it to equal zero? (–6.89 + 14.52) + (–14.52)

kobusy [5.1K]

Answer:

The number to be added is 6.89

Step-by-step explanation:

Here, we want to know what number must be added to the expression to make it equal to zero.

Let the number be x

Thus;

-6.89 + 14.52 -14.52 + x = 0

-6.89 + x = 0

x = 6.89

6 0

3 years ago

Need help fast plz for my pre calc exam

bezimeni [28]

Answer:

<em>h = 8.54 units</em>

Step-by-step explanation:

<u>The Law of Cosines </u>

It relates the length of the sides of a triangle with one of its internal angles.

Let a,b, and c be the length of the sides of a given triangle, and x the included angle between sides a and b, then the following relation applies:

$c^2=a^2+b^2-2ab\cos x$

Since we know the values of all three side lengths, we solve the equation for x:

$\displaystyle \cos x=\frac{a^2+b^2-c^2}{2ab}$

For the triangle ABC in the image, a=10, b=15, c=13, thus:

$\displaystyle \cos A=\frac{10^2+15^2-13^2}{2*10*15}$

$\displaystyle \cos A=\frac{156}{300}$

$\displaystyle \cos A=0.52$

Thus, A = 58.67°

For the right triangle of height h and hypotenuse 10, we use the sine ratio:

$\displaystyle \sin 58.67^\circ=\frac{h}{10}$

Solving for h:

$h = 10\sin 58.67^\circ$

h = 8.54 units

6 0

3 years ago

Quiz

ivanzaharov [21]

Answer: Its A, Your Welcome.

Step-by-step explanation:

4 0

3 years ago

From point a travel 12 km south and 10 km west then travel 5 km north how far r u from point a

maks197457 [2]

Answer:17

Step-by-step explanation:

8 0

3 years ago

Compared to others, which one of the following is not robust to outliers? a) Mean b) Median c) Mode d) 50th percentile

tatyana61 [14]

Answer:

The mean.

Step-by-step explanation:

The mean is not robust.

The presence of an outlier greatly affects the value of a mean.

An example will illustrate this.

Find the mean of the numbers 2 3 5 6 34.

34 is an outlier. The mean = (2+3+5+6+34) / 5 = 10.

Now if we replace the outlier with a number closer to the others:

Say we have 2 3 5 6 8 :

The mean = (2+3+5+6+8) / 5 = 4.8 which is a much truer measure of centrality than 10.

3 0

3 years ago