How to use discounts in our daily life?

Mathematics

2 answers:

Evgen [1.6K]3 years ago

8 0

Answer:

1.To calculate the discount, multiply the rate by the original price.

2.To calculate the sale price, subtract the discount from original price.

Hey mate hope its help you.....✨✨✨✨✨✨

Verdich [7]3 years ago

6 0

The basic way to calculate a discount is to multiply the original price by the decimal form of the percentage. To calculate the sale price of an item, subtract the discount from the original price. You can do this using a calculator, or you can round the price and estimate the discount in your head.

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Identify the phase shift of each function. Describe each phase shift ( use a phrase like 3 units to the left):

Temka [501]

ANSWER

Phase shift: 2 units right.

EXPLANATION

The given sine function is

$y = - \sin(x - 2)$

In mathematics, a horizontal shift may also be referred to as the phase shift.

This function is shifted to the right 2 units.

8 0

3 years ago

100 points!!! Pre calculus. I need helpppppppppp

Fantom [35]

Answer:

We have function,

$y = 3 - 6 \sin {}^{} (2x + \frac{\pi}{2} )$

Standard Form of Sinusoid is

$y = - 6 \sin(2x + \frac{\pi}{2} ) + 3$

Which corresponds to

$y = a \sin(b(x + c)) + d$

where a is the amplitude

2pi/b is the period

c is phase shift

d is vertical shift or midline.

In the equation equation, we must factor out 2 so we get

$y = - 6(2(x + \frac{\pi}{4} )) + 3$

Also remeber a and b is always positive

So now let answer the questions.

a. The period is

$\frac{2\pi}{ |b| }$

$\frac{2\pi}{ |2| } = \pi$

So the period is pi radians.

b. Amplitude is

$| - 6| = 6$

Amplitude is 6.

c. Domain of a sinusoid is all reals. Here that stays the same. Range of a sinusoid is [-a+c, a-c]. Put the least number first, and the greatest next.

So using that rule, our range is [6+3, -6+3]= [9,-3] So our range is [-3,9].

D. Plug in 0 for x.

$3 - 6 \sin((2(0) + \frac{\pi}{2} )$