Question

sale on watches 10% off marked price + 20% off the discounted price what will a watch marked at $1,200.00cost?

Answer 1

$864

Explanation:

100-10 = 90/100= 0.9 (multiplier)

1200*0.9= 1080

100-20 = 80/100= 0.8 (2nd multiplier)

1080*0.8= 864

hope this helps

Answer 2

`</p><p>[tex] \large{\boxed{\sf Hypotenuse = 16.97\ cm }}`

Hypotenuse=16.97 cm

Explanation:

Here it is given that the area of a right isosceles ∆ is 72 cm² . Let us assume that each equal side is x . Therefore the height and the base of the ∆ will be same that is x .

p

Area =\dfrac{1}{2}(base)(height)\\\end{gathered}⟶Area=21(base)(height)

`72cm^2=(1)/(2)(x)(x)\\\end{gathered}`

⟶72cm2=21(x)(x)

144cm^2\\\end{gathered}⟶x2=144cm2

`=√(144cm^2)\\\end{gathered}⟶x=144cm2`

`\sf\qquad\longrightarrow \pink{x = 12cm }⟶x=12cm`

Hence we may find hypotenuse using Pythagoras Theorem as ,

`\sf\qquad\longrightarrow h =√( p^2+b^2)⟶h=p2+b2`

Here p = b = 12cm ,

`\begin{gathered}\sf\qquad\longrightarrow h =√( (12cm)^2+(12cm)^2)\\\end{gathered}`

⟶h=(12cm)2+(12cm)2

`=√(144cm^2+144cm^2)\\\end{gathered}`

⟶h=144cm2+144cm2

=\sqrt{288cm^2}\\\end{gathered}⟶h=288cm2

`\sf\qquad\longrightarrow \pink{ hypotenuse=`

16.97cm }⟶hypotenuse=16.97cm

Hence the hypotenuse is 16.97 cm .

[/tex]