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3 years ago

8

#5- [Multiple answer] Why would no ecosystem exist without energy conversion?

1 answer:

DaniilM [7]3 years ago

3 0

It would be about b and d i think

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What is the measure of angle C?

allsm [11]

You must use trig for this. If you are using a calculator make use it is first set in degrees!! To find C, you can use cosine, which is adjacent over hypotenuse.
You must use inverse cosine since the sides are given, not the angles.
cos∧-1(120/122)
You have inverse cosine which is cosine negative one and multiply it by adjacent over hypotenuse sides.
The answer is 10.3888 degrees.

8 0

4 years ago

Give an example of a rational number that is not an integer

Sedbober [7]

Answer:

I don't know

Step-by-step explanation:

my previous answer was wrong

6 0

3 years ago

Read 2 more answers

Solve for x using quadratic formula : <br>abx^2 + (b^2 - ac)x - bc = 0

LenaWriter [7]

<h3>Answer:</h3>

$\boxed{\sf x = \dfrac{c}{b} \quad or \quad \dfrac{-b}{a}}$

Explanation:

Given expression: (ab)x^2 + (b^2 - ac)x + (-bc) = 0

Here given:

a = ab

b = b² - ac

c = -bc

Apply quadratic formula:

$\sf x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{2a} \quad when \ ax^2 + bx + c = 0$

Insert values:

$\sf x = \dfrac{-(b^2 - ac) \pm \sqrt{(b^2 -ac)^2-4(ab)(-bc)} }{2(ab)}$

$\sf x = \dfrac{-b^2 + ac \pm \sqrt{\left(b^2-ac\right)^2+4abbc} }{2ab}$

$\sf x = \dfrac{-b^2 + ac \pm \sqrt{b^4+2b^2ac+a^2c^2} }{2ab}$

$\sf x = \dfrac{-b^2 + ac \pm \sqrt{\left(b^2+ac\right)^2} }{2ab}$

$\sf x = \dfrac{-b^2 + ac \pm( b^2+ac )}{2ab}$

$\sf x = \dfrac{-b^2 + ac +( b^2+ac )}{2ab} \quad or \quad \dfrac{-b^2 + ac -( b^2+ac )}{2ab}$

$\sf x = \dfrac{2ac}{2ab} \quad or \quad \dfrac{-2b^2}{2ab}$

$\sf x = \dfrac{c}{b} \quad or \quad \dfrac{-b}{a}$

4 0

2 years ago

Read 2 more answers

Evaluate P(7, 5). 2,520 42 35 5,040

natta225 [31]

<span>P(7, 5)
= 7 P 5
= 7! / (7 - 5)!
= 7! / 2!
= 5040 / 2
= 2520 </span>

4 0

4 years ago

Read 2 more answers

Lake Victoria hast the largest surface area of all lakes in Africa.Its surface area is 26,828 square miles.How much larger is th

Leni [432]

4,872 square miles. I believe lol

5 0

4 years ago