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2 years ago

Please help I can't solve it.

Mathematics

2 answers:

Alisiya [41]2 years ago

6 0

Answer:

1. $2,400

2. $1,600

Step-by-step explanation:

[1] Retail price means we will take the 150% markup, but take off the 50% discount

-> $1,200 * 2 = $2,400

-> 50% is 1/2, so we can multiply it by 2 to solve for the price

[2] Now that we have $2,400, we want to see what the price was before the 150% markup.

-> 150% / 100 = 1.5

-> $2,400 / 1.5 = $1,600

-> We can divide the value by the markup percent (as a decimal) to find the original value

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

poizon [28]2 years ago

4 0

Answer:

1. 2400

2. 1600

Step-by-step explanation:

1200*2=2400

2400/1.5=1600

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A triangle has vertices at (-1,5), (4,2), and (0,0). What is the perimeter of the triangle

yan [13]

The perimeter of the triangle is 15.4 units.

Step-by-step explanation:

The triangle has vertices at (-1,5), (4,2), and (0,0).

To find the perimeter of the triangle, you need to find the distance of the three points which is the length of the three sides of the triangle.

Let us consider the points as A (-1,5) and B (4,2) and C (0,0).

The distance formula is given by :

⇒ $\sqrt{(x2-x1)^{2}+(y2-y1)^{2} }$

Distance of AB :

A (-1,5) ⇒ (x1,y1)

B (4,2) ⇒ (x2,y2)

⇒ $\sqrt{(4+1)^{2}+(2-5)^{2} }$

⇒ $\sqrt{5^{2}+-3^{2} }$

⇒ $\sqrt{25+9}$

⇒ $\sqrt{34}$

⇒ 5.8

∴ The length of the side AB of the triangle is 5.8 units.

Distance of BC :

B (4,2) ⇒ (x1,y1)

C (0,0) ⇒ (x2,y2)

⇒ $\sqrt{(0-4)^{2}+(0-2)^{2} }$

⇒ $\sqrt{16+4 }$

⇒ $\sqrt{20}$

⇒ 4.5

∴ The length of the side BC of the triangle is 4.5 units.

Distance of CA :

C (0,0) ⇒ (x1,y1)

A (-1,5) ⇒ (x2,y2)

⇒ $\sqrt{(-1-0)^{2}+(5-0)^{2} }$

⇒ $\sqrt{1+25}$

⇒ $\sqrt{26}$

⇒ 5.1

∴ The length of the side CA of the triangle is 5.1 units.

Now, the perimeter of the triangle is given by :

Perimeter = Sum of the lengths of all three sides of the triangle.

⇒ 5.8 + 4.5 + 5.1

⇒ 15.4 units.

∴ The perimeter of the triangle is 15.4 units.

4 0

3 years ago

Is 73 a prime number

lora16 [44]

Hi there,

73 indeed a prime number

A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is called a composite number!

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4 years ago

Solve using the elimination method<img src="https://tex.z-dn.net/?f=4x%2B5y%3D4%5C%5C8x%2B10y%3D8" id="TexFormula1" title="4x+5y

EastWind [94]

Answer:

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x = all real numbers

In set notation/interval notation;

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x∈(-∞,∞)

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1. Background information

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Add the first and second equations.

-8x - 10y = -8

+ ( 8x + 10y = 8 )

_____________

This means that y can be any real number, and hence x can be any real number.

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3 years ago

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3 years ago

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