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3 years ago

A xbox is marked down $75. If this is a 15% decrease, find the sale price?

Mathematics

1 answer:

nikklg [1K]3 years ago

4 0

9514 1404 393

Answer:

$425

Step-by-step explanation:

After the decrease, the sale price is 100% -15% = 85% of the original price. Of course, the markdown is 15% of the original price. Then the ratio of sale price to markdown is ...

(sale price)/(markdown) = (85%)/(15%)

sale price = markdown × 85/15 . . . . . multiply by markdown

sale price = $75 × 85/15 = $425

The sale price of the x-box is $425.

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Solve the inequaility - x/4 <2

IrinaK [193]

❄ Hi there,

let us start by considering this: What should we do to get x all by itself?

Since it's

divided by 4
multiplied by -1

we should

multiply (both sides) by 4
divide (both sides) by -1

So, let's start.

$\sf{\dfrac{-x}{4}\times4 < 2\times4}}$

$\sf{-x < -8}$

$\sf{x > 8}$

When we divide both sides of an inequality by a negative number, we do "the inequality flip" and flip the inequality sign.

❄

8 0

2 years ago

A fair die is rolled in a board game to determine how many spaces a player can move on their turn. It has one of the numbers 1,2

Jet001 [13]

Answer:

(a)6 (b)3 (c)0.5

Step-by-step explanation:

Given a fair die with the numbers 1,2,3,4,5, or 6 on each of its faces.

Event A is the event of rolling an even number

Event B is the event of rolling an odd number.

(a)The sample space for the outcomes in this experiment is {1,2,3,4,5,6}

There are 6 outcomes in the sample space.

n(S)=6

(b)

Event A is the event of rolling an even number

Sample space of A = {2,4,6}

There are 3 outcomes in event A.

n(A)=3

(c)The probability of event A

$P(A)=\dfrac{n(A)}{n(S)} =\dfrac{3}{6} =0.5$

P(A) =0.5 is the probability that you choose an even number.

6 0

3 years ago

What are the roots of the quadratic equation X² + 4X + 4. How many roots are there.

kogti [31]

If we set the equation equal to 0, we can factor it to find its roots:

x² + 4x + 4 = 0
(x + 2)(x + 2) = 0
x = -2

This graph has one root, a double root, at -2. This means that a single point, which must be the vertex of the parabola, touches the x-axis at (-2, 0)

3 0

4 years ago

Round these numbers to the nearest (I) 10 (ii) 100 (iii) 1000 (a) 948 (b) 1855 (c) 199 (d) 645 (e) 19897

makkiz [27]

A) 950, 900, 1000
b) 1860, 1900, 2000
c) 200, 200, 0
d) 650, 600, 1000
e) 19900, 19900, 20000

5 0

3 years ago

2(3x−5a)+9(2a−7b)+3(5a−2x)=0

alexdok [17]

Answer:

a=63b/23, b=23a/63

7 0

3 years ago