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2 years ago

What are the solutions of 3x²-x+7=0?

Mathematics

2 answers:

photoshop1234 [79]2 years ago

7 0

Answer:

The answer is A.

Step-by-step explanation:

Aloiza [94]2 years ago

4 0

Answer:

Step-by-step explanation:

$3x^2-x+7=0$

Using the quadratic formula:

$x=\dfrac{1\pm \sqrt{1-84}}{6}=\dfrac{1\pmi\sqrt{83}}{6}$

Therefore, the correct answer is A. Hope this helps!

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In what ways does algebra act as a tool to improve communication? How does algebra affect how people can learn from each other?

Andreyy89

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2 years ago

Simplify 7 -(-4) + 3(-6).<br> 0-7<br> 07<br> -9<br> 9

Contact [7]

It’s -7
7-(-4) is 7+4, which is 11
3 times -6 is -18
11 + -18 is -7

6 0

3 years ago

Read 2 more answers

The Eiffel Tower in Paris, France. Lizbeth is 5.5 feet tall. She looks up at an angle of elevation of 72° to see the top from 31

garri49 [273]

Answer:

The height of the Eiffel Tower will be 318 feet.

Step-by-step explanation:

Please check the attached graph.

From the diagram, it is clear that Lizbeth is 5.5 ft tall, seeing the top from 318 feet away, making an angle of elevation to be 72⁰.

The diagram makes a right-angled triangle.

Given the angle = Ф = 72⁰

Adjacent = a = 5.5 ft

Opposite = b = 318 ft

Hypotenuse = the height of the Eiffel Tower = c ?

Pythagorean Theorem:

For a right-angled triangle, with sides 'a' and 'b', the hypotenuse 'c' is defined as:

$c=\sqrt{a^2+b^2}$

$a=5.5$

$b=318$

$c=\sqrt{5.5^2+318^2}$

$c=318$ feet

Therefore, the height of the Eiffel Tower will be 318 feet.

3 0

2 years ago

How you would solve this problem. 3n=15

Sergio [31]

Answer: n=5

Step-by-step explanation: You are solving for ‘n’ so you would want to get ‘n’ by itself on one side of the equation. The easiest way to do this would be to divide both sides by 3, which would make ‘3n’ turn to ‘n’ and 15 into 5.

4 0

2 years ago

I need help on everything please help me

Ksivusya [100]

I would think it would be b for task 3

3 0

2 years ago