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VLD [36.1K]
3 years ago
6

By decreasing each dimension by 1 unit​, the area of a rectangle decreased from 40 square feet​ (on the​ left) to 28 square feet

​ (on the​ right). Find the percent decrease in area.

Mathematics
1 answer:
BabaBlast [244]3 years ago
7 0
Attached a pic of the solution (s).

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A prism with a triangular base has a volume of 432 cubic feet. The height of the prism is 8
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Answer:

9 feet

Step-by-step explanation:

Given:

A prism with a triangular base has a volume of 432 cubic feet.

The height of the prism is 8.

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Question asked:

The height of the triangular base of the prism = ?

solution:

Volume of  triangular prism = Area of triangle \times height

432 = Area of triangle \times8

Dividing both side by 8

54 = Area of triangle

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Multiplying both side by 2

108 = 12 \times height

Dividing both side by 12

9 = height

Thus, height of the triangular base of the prism is 9

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2 years ago
How much profit will a store make on the sale of a flat screen TV that is marked up by 30% and then sold at a 20% discount if th
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The flat screen TV that is marked up by 30% and 20% discount had a profit of $60 after being sold.

The mark up percentage is given by:

Mark up percentage = (selling price - cost price)/cost price

Since the original price is $1500, hence:

30% = (selling price - 1500)/1500

0.3 = (selling price - 1500)/1500

(selling price - 1500) = 450

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It was again sold at a discount of 20%:

Final selling price= 1950 - 20% of 1950 = 1560

Profit = 1560 - 1500 = $60

Hence $60 profit was made by the store for the sale of a flat screen TV.

Find out more at: brainly.com/question/15699405

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2 years ago
A total of 40 people made cakes for a bake sale.  Each person made 3 cakes.  Ms. Sanchez
Elena L [17]
18 chocolate cakes were made. 40(3)= 120 cakes in total. 15%=.15 .15(120)= 18 
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3 years ago
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