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3 years ago

3x² + 8x + 5 = 0 method of completing square.plz help me I have lots of assignment.

Mathematics

2 answers:

Alja [10]3 years ago

8 0

Answer:

the answer is (x+1)(3x-5)

erica [24]3 years ago

8 0

Answer:

X=-1,- $\frac{5}{3}$

Step-by-step explanation:

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The probability of it snowing on a given day is 41<br>What is the probability of it not snowing?

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3 years ago

Negative 5 1 half plus 7 3 over 4

erastovalidia [21]

Answer:

$2 \dfrac{1}{4}$

Step-by-step explanation:

$-5 \dfrac{1}{2} + 7 \dfrac{3}{4} =$

$= -5 \dfrac{2}{4} + 7 \dfrac{3}{4}$

$= 7 \dfrac{3}{4} - 5 \dfrac{2}{4}$

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3 years ago

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3 years ago

Need help with trigonometry

vovangra [49]

Answer:

$\sf \tan(A) & =\dfrac{9\sqrt{22}}{44}$

Step-by-step explanation:

If angle C is the right angle, then side c is the hypotenuse.

Use Pythagoras' Theorem $a^2+b^2=c^2$ to find the length of side a:

Given:

b = 2√22
c = 13

$\implies a^2+(2 \sqrt{22})^2=13^2$

$\implies a^2+88=169$

$\implies a^2=81$

$\implies a=\sqrt{81}$

$\implies a=9$

<u>Tan Trig Ratio</u>

$\sf \tan(\theta)=\dfrac{O}{A}$

where:

$\theta$ is the angle
O is the side opposite the angle
A is the side adjacent the angle

Given:

$\theta$ = A
O = side opposite angle A = a = 9
A = side adjacent angle A = b = 2√22

$\begin{aligned}\implies \sf \tan(A) & =\dfrac{9}{2\sqrt{22}}\\\\ & =\dfrac{9}{2\sqrt{22}} \times \dfrac{\sqrt{22}}{\sqrt{22}}\\\\ & = \dfrac{9\sqrt{22}}{44} \end{aligned}$

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2 years ago

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3x² + 8x + 5 = 0 method of completing square.plz help me I have lots of assignment.​

3x² + 8x + 5 = 0 method of completing square.plz help me I have lots of assignment.