Solve for x !!!! Please help mee

Mathematics

1 answer:

Ludmilka [50]3 years ago

6 0

Answer:

I don't think this is right but is it 5?

Step-by-step explanation:

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LuckyWell [14K]

SAME QUESTION SOMEONE PLEASE ANSWER

3 0

3 years ago

(3x3 + 11x2 + 4x + 1)/ (x2 + x)

lions [1.4K]

If those are exponents, then...

3x^3 + 11x^2 + 4x + 1
----------------------------- Cancel out the 11x^2 with the x^2
x^2 + x

3x^3 + 10x^2 + 4x +1
----------------------------- Cancel out the x with the 4x
x

3x^3 + 10x^2 + 3x +1

6 0

3 years ago

Find the length of side AB Give answer to 3 significant figures

Rina8888 [55]

Answer:

AB = 8.857 cm

Step-by-step explanation:

Here, we are given a right angle $\triangle ABC$ in which we have the following things:

$\angle A = 90 ^\circ\\\angle C = 41 ^\circ\\\text{Side }BC = 13.5 cm$

Side BC is the hypotenuse here.

We have to find the side AB.

Trigonometric functions can be helpful to find the value of Side AB here.

Calculating $\angle B$ :

Sum of all the angles in $\triangle ABC$ is $180^\circ$ .

$\Rightarrow \angle A + \angle B + \angle C = 180^\circ\\\Rightarrow 90^\circ + \angle B + 41^\circ = 180^\circ\\\Rightarrow \angle B = 49^\circ$

We know that cosine of an angle is:

$cos \theta = \dfrac{\text{Base}}{\text{Hypotenuse}}\\\Rightarrow cos B = \dfrac{AB}{BC}\\\Rightarrow cos 49^\circ = \dfrac{AB}{13.5}\\\Rightarrow AB = 13.5 \times 0.656\\\Rightarrow AB = 8.857 cm$