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3 years ago

The price of an item has been reduced by 30%. The original price was $61.

Mathematics

2 answers:

UNO [17]3 years ago

8 0

Answer:

Step-by-step explanation:

ser-zykov [4K]3 years ago

3 0

Answer:

$42.70

Step-by-step explanation:

61 x 31% is 18.3. so $61 - 18.3 =$42.70

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3 years ago

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3 years ago

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3 years ago

A soundproofing tile is made of 8 identical solid right pyramids with square bases. The length of the whole tile shown is x inch

mylen [45]

Answer:

Option B ⇒ Area of base of each pyramid :

$(\frac{x}{4})^2 in^2$

Option A ⇒ Volume of pyramid :

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Step-by-step explanation:

One side of tile consists of 4 pyramids and since length of whole tile is x,

So, the base length of each pyramid = $\frac{x}{4}$

⇒ Area of base of each pyramid = side²

⇒ Area =

$(\frac{x}{4})^2 in^2$

Volume of square based pyramid :

$=(Area of base )\cdot \frac{h}{3}\\=\frac{x^2}{3} cm^3$

For 1. The correct Option is B

For 2. The correct option is A

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3 years ago

Read 2 more answers