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2 years ago

A PAIR OF JEANS MARKED AT R450 IS SOLD AT DISCOUNT OF 25%.

Mathematics

1 answer:

Stolb23 [73]2 years ago

4 0

Original price is the jeans = Rs450

Discount = 25%

Discount amount

= 25% of 450

= 25%(450)

= 25/100 × 450

= 25/10 × 45

= 5/2 × 45

= 225/2

= Rs112.5

Price after discount

= original price - discount amount

= 450 - 112.5

= Rs337.5

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marta [7]

$0 = - 4.9t {}^{2} + 27t + 2.4$
Convert decimals to fractions

$0 = - \frac{49}{10} t {}^{2} + 27t + \frac{12}{5}$
Multiply both sides by 10

$0 = - 49t {}^{2} + 270t + 24$
Move expression to the left.

$0 + 49t {}^{2} - 270t - 24 = 0$
Remove zero.

$49t {}^{2} - 270t - 24 = 0$ Solve the quadratic equation.

$t = \frac{ - ( - 270) + - \sqrt{( - 270) {}^{2} - 4 \times 49 \times ( - 24) } }{2 \times 49}$
Remove parenthesis and calculate.

$t = \frac{270 + - \sqrt{72900 + 4704} }{98}$
Add the numbers

$t = \frac{270 + - 77604}{98}$
Separate the solutions

$t = \frac{270 + \sqrt{77604} }{98} \\ t = \frac{270 - \sqrt{77604} }{98}$
The final solution are
$t1 = \frac{270 - \sqrt{77604} }{98} , t2 = \frac{270 + \sqrt{77604} }{98}$

7 0

3 years ago

I need help on this...

valentina_108 [34]

Can be number 1 or number 4 I am not sure but can be 4 but take your sedición

5 0

3 years ago

A quadratic equation is written in four equivalent forms below.

____ [38]

IV is the most useful (even though all will work)
To find the y-intercept, take x=0 and substitute it into the equations.

We can see that if x=0, you can very easily observe that option IV reduces to
y = 0 + 0 - 24 = -24.
Hence (0,-24) is the y-intercept

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3 years ago

2x+3y= -1<br> 3x+4y = -4

Mariana [72]

Answer:

Point Form- (-8,5)

Equation Form- x= -8, y= 5

Add the equations in order to solve for the first variable. Plug this value into the other equation in order to solve for the remaining variables.

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3 years ago

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ra1l [238]

Answer:

how do i say this uh...

Step-by-step explanation:

i wanna say 3 up and 4 across, then alighn. then 2 up and 1 across there.

6 0

2 years ago

A PAIR OF JEANS MARKED AT R450 IS SOLD AT DISCOUNT OF 25%.​

A PAIR OF JEANS MARKED AT R450 IS SOLD AT DISCOUNT OF 25%.