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2 years ago

Hey can anyone please give me an explanation to the conic section rules like the circle and the ellipse, parabola and hyperbola

1 answer:

4 0

Post a specific question about the conic section. Your best bet is to search You Tube for video clips about the conic section.

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Determine whether y^2=−3x−2 is a function.

Paladinen [302]

Answer:

y=3x-2 is a function because it passes the vertical line test.

Step-by-step explanation:

4 0

2 years ago

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The is thinking of a number which he calls n. He finds 1/3 of the number and subtracts 5

Alona [7]

Answer:

I just did it its 1/3n - 5

Step-by-step explanation:

5 0

2 years ago

Choose the equations that are not linear equations. - x - y = 2, x^2 + y = 4, x/2 - y^3 = 1, x = 5

tekilochka [14]

Answer:

x^2 + y = 4
x/2 - y^3 = 1

Step-by-step explanation:

Any equation with a product of variables, or with a variable in an exponent or denominator, is <em>not a linear equation</em>. Here, "product of variables" includes powers and roots—any expression with an exponent other than 1, or a total of exponents other than 1.

7 0

2 years ago

Element X decays radioactively with a half-life of eight minutes. If there are 800 g of element X, how long, to the nearest 10th

Harman [31]

Answer: 41.5 min

Step-by-step explanation:

This problem can be solved with the Radioactive Half Life Formula:

$A=A_{o}.2^{\frac{-t}{h}}$ (1)

Where:

$A=22 g$ is the final amount of the radioactive element

$A_{o}=800 g$ is the initial amount of the radioactive element

$t$ is the time elapsed

$h=8 min$ is the half life of the radioactive element

So, we need to substitute the given values and find $t$ from (1):

$22 g=(800 g) 2^{\frac{-t}{8 min}}$ (2)

$\frac{22 g}{800 g}=2^{\frac{-t}{8 min}}$ (3)

$\frac{11}{400}=2^{\frac{-t}{8 min}}$ (4)

Applying natural logarithm in both sides:

$ln(\frac{11}{400})=ln(2^{\frac{-t}{8 min}})$ (5)

$-3.593=-\frac{t}{8 min}ln(2)$ (6)

Clearing $t$ :

$t=41.46 min \approx 41.5 min$ This is the time elapsed

7 0

2 years ago

What is .25 written in its simplest fraction form? A. 2/5 B. 4/1 C. 1/4 D. 100/25

Furkat [3]

0.25 = 25/100

to simplify 25/100, divide 25 from both the numerator and denominator.

25/25 = 1

100/25 = 4

1/4 is the simplest form

C. 1/4 is your answer

hope this helps

5 0

2 years ago

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