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Aliun [14]
4 years ago
11

HELPP!

Mathematics
2 answers:
Mashutka [201]4 years ago
4 0

Answer

when you place a source of signal at a focal point of an ellipse, the signal will be reflected to the other focal point position

When you place a source of rays as a signal at the focal point of a hyperbola, the ray will be reflected directly away from the other focal point

When you place a source of rays as a signal at one of the parabola focus, the ray will be reflected in lines that are parallel to the axis of the parabola.

Digiron [165]4 years ago
4 0

Explanation:

In each case, rays through one focus are reflected along a line through the other focus.

The second focus of a <em>parabola</em> is at infinity, so rays through the focus are reflected along parallel paths.

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3 years ago
What is the solution of y − 4x = 0 and 3x + 6y = 9?
Elden [556K]
You solve this by plugging one equation into the other. Usually you have to rewrite one equation to make this work. In this case I choose to rewrite y-4x=0 as y=4x.

After plugging it into the second, you get:

3x + 6*4x = 9 => 27x = 9 => x=1/3

Putting this solution back into y=4x gives us y=4/3
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3 years ago
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yarga [219]

Answer:

a) KJL = 76⁰

b) LKM = 76/2 = 38⁰

7 0
3 years ago
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Encik Zulhazim deposited RM8000 in a fixed deposit account at Bank T for 2 years with interest rate of 5% per annum. What is the
creativ13 [48]

Answer: $34.08

<u>Step-by-step explanation:</u>

\text{Compound Interest}:A=P\bigg(1+\dfrac{r}{n}\bigg)^{nt}\\\\\bullet A=\text{accrued amount (final balance)}\\\bullet P=\text{principal (amount invested)}\\\bullet r=\text{interest rate (convert percentage to a decimal)}\\\bullet n=\text{number of times compounded (in one year)}\\\bullet t=\text{time (number of years)}\\\\\\\underline{\text{Given:}}\\\bullet P=8000\\\bullet r=5\% (0.05)\\\bullet n=3\ \text{(every 4 months is 3 times per year)}\\\bullet t=2

A=8000\bigg(1+\dfrac{0.05}{3}\bigg)^{3(2)}\\\\\\A = \large\boxed{8834.08}

\text{Simple Interest}:A=P(1+rt)\\\\A=8000+8000[1+0.05(2)]\\\\A=\large\boxed{8800.00}

Difference = Compound Interest - Simple Interest

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4 0
3 years ago
6x^2 - 9x + 3<br> - (8x²+ 7x - 1)
Solnce55 [7]

Answer:

-2x² - 16x + 4

Step-by-step explanation:

Step 1: Write out expression

6x² - 9x + 3 - (8x² + 7x - 1)

Step 2: Distribute negative

6x² - 9x + 3 - 8x² - 7x + 1

Step 3: Combine like terms (x²)

-2x² - 9x + 3 - 7x + 1

Step 4: Combine like terms (x)

-2x² - 16x + 3 + 1

Step 5: Combine like terms (constants)

-2x² - 16x + 4

8 0
3 years ago
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