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2 years ago

The PS4 cost $650 when it first came out. Two years later it was only worth $250. By what percentage did the price decrease?

Mathematics

1 answer:

Alex777 [14]2 years ago

8 0

Answer:

It decreased by 61.5%

Step-by-step explanation:

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Brianna ate 3 bags of apple slices. If each bag contained 7 apple slices, which equation represents the total number of apple sl

Veronika [31]

D. This is the answer because 3 bags with 7 would be 3x7 and your answer would be 21

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1 year ago

a book normally costs $21.50. today it was on sale for 15.05. what percentage discount was offered during the sale?

faltersainse [42]

To find the discount %, we must use the equation below.

Discounted Price / Original Price = 1 - Discount %

15.05 / 21.5 = 1 - Discount %

Subtract 15.05 / 21.5 from both sides and add Discount % to both sides to get the following equation.

Discount % = 1 - 15.05 / 21.5 = 1 - 0.7 = 0.3 = 30% discounted

4 0

3 years ago

Solve this quadratic equation 5x^2+3x+4=25

VikaD [51]

Answer:

the answer is about 1.2

Step-by-step explanation:

3 0

3 years ago

The perimeter of a rectangular swimming pool is 414 meters. The length of the pool is 7 meters more than four times the width. F

PolarNik [594]

Answer:

Width = 40 meters

Length = 167 meters

Step-by-step explanation:

Let

Width of the pool = x meters

Then

Length of the pool = 4x + 7 meters

and

Perimeter $=2(x+4x+7)=2(5x+7)=10x+14$ meters

Hence,

$10x+14=414\\ \\10x=414-14\\ \\10x=400\\ \\x=40\ meters\\ \\4x+7=4\cdot 40+7=167\ meters$

5 0

2 years ago

Given that cot θ = 1/√5, what is the value of (sec²θ - cosec²θ)/(sec²θ + cosec²θ) ?

Bogdan [553]

Step-by-step explanation:

$\mathsf{Given :\;\dfrac{{sec}^2\theta - co{sec}^2\theta}{{sec}^2\theta + co{sec}^2\theta}}$

$\bigstar\;\;\textsf{We know that : \large\boxed{\mathsf{{sec}\theta = \dfrac{1}{cos\theta}}}}$

$\bigstar\;\;\textsf{We know that : \large\boxed{\mathsf{co{sec}\theta = \dfrac{1}{sin\theta}}}}$

$\mathsf{\implies \dfrac{\dfrac{1}{cos^2\theta} - \dfrac{1}{sin^2\theta}}{\dfrac{1}{cos^2\theta} + \dfrac{1}{sin^2\theta}}}$

$\mathsf{\implies \dfrac{\dfrac{sin^2\theta - cos^2\theta}{sin^2\theta.cos^2\theta}}{\dfrac{sin^2\theta + cos^2\theta}{sin^2\theta.cos^2\theta}}}$

$\mathsf{\implies \dfrac{sin^2\theta - cos^2\theta}{sin^2\theta + cos^2\theta}}$

Taking sin²θ common in both numerator & denominator, We get :

$\mathsf{\implies \dfrac{sin^2\theta\left(1 - \dfrac{cos^2\theta}{sin^2\theta}\right)}{sin^2\theta\left(1 + \dfrac{cos^2\theta}{sin^2\theta}\right)}}$