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3 years ago

-2(x+5)^2=50 solve using square root

Mathematics

1 answer:

Ainat [17]3 years ago

8 0

Answer:

x = -5 + 5i, -5 - 5i

Step-by-step explanation:

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In physics, Boyle’s law states that if the temperature is constant, then the pressure, P, of a gas is inversely proportional to

VMariaS [17]

The constant of proportionality for this situation is 425

Step-by-step explanation:

When a quantity is inversely proportional with another quantity, then

the product of the two quantities is constant

1. If y is inversely proportional with x

2. Then y ∝ $\frac{1}{x}$

3. that mean y = $\frac{k}{x}$ where k is the constant of variation

4. Then xy = k

∵ In physics, Boyle’s law states that if the temperature is constant

∵ The pressure, P, of a gas is inversely proportional to the volume,

V, of the gas

∴ P ∝ $\frac{1}{V}$

∴ P = $\frac{k}{V}$

∵ The pressure of the gas in a cylinder is equal to 250 kilo pascals

∵ The volume of the container is 1.7 cubic meters

- Substitute these values in the rule of variation to find k

∴ 250 = $\frac{k}{1.7}$

- Multiply both sides by 1.7

∴ k = 425

The constant of proportionality for this situation is 425

Learn more:

You can learn more about proportion in brainly.com/question/10708697

#LearnwithBrainly

4 0

3 years ago

Which choice is the solution to the inequality below?<br> 2 x < 20

nasty-shy [4]

just divide 20 by coefficient of x

x < 20/2

x < 10

4 0

4 years ago

Find, corrrect to the nearest degree, the three angles of the triangle with the given vertices. D(0,1,1), E(-2,4,3), C(1,2,-1)

Sholpan [36]

Answer:

The three angles of the triangle given above are 23, 73 and 84 correct to the nearest degree. The concept of dot product under vectors was applied in solving this problem. The three positions forming the triangle were taken as positions vectors. The Dot product also known as scalar product is a very good way of finding the angle between two vectors. ( in this case the sides of the triangle given above). Below is a picture of the step by step procedure of the solution.

Step-by-step explanation:

The first thing to do is to treat the given positions in space as position vectors which gives us room to perform vector manipulations on them. Next we calculate the magnitude of the position vector which is the square root of the sun of the square of the positions of the vectors along the three respective axes). Then we calculate the dot product. After this is calculated the angle can then be found easily using formula for the dot product.

Thank you for reading this and I hope it is helpful to you.

4 0

4 years ago

How do you do 5÷465 in long division and 12÷924 and 3÷1107

horsena [70]

Answer:1st one 93 2nd 77 and 3rd 369

Step-by-step explanation:

6 0

3 years ago

Simplify the complex fraction if you can show me want to do that would be great

Arisa [49]

Answer:

A.) y-1/(y-2)(y-6)

Step-by-step explanation:

Factor:

y-1/(y+3)(y-2)/y-6/y+3

Multiply by reciprocal:

y-1/(y+3)(y-2) * y+3/y-6

(y+3)s cancel out

(y-1)/(y-6)(y-2)

5 0

3 years ago