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Anna11 [10]
3 years ago
15

Work out the area of a rectangle with base, b = 20mm and perimeter, P = 42mm.

Mathematics
2 answers:
polet [3.4K]3 years ago
6 0

Answer:

Let the length of the rectangle be 'l'

We have,

Perimeter of rectangle, P = 42mm.

or, 2(l+b) = 42\\or, l +b = \frac{42}{2} = 21\\or, l + 20 = 21\\or, l = 1mm\\

Area of rectangle = lb = 1(20) = 20mm^{2}

Zarrin [17]3 years ago
3 0

Answer:

20mm

Step-by-step explanation:

base=20mm

base x 2 because there are two long lines

20 x 2 = 40

42-40=2

amount needed on either side to balance

height=1mm

20 x 1 = 20mm

area = 20mm

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We have been given that Pepper Jackie purchased 3.5 pounds of jelly beans for $1.19 per pound.

Let us find how much Pepper Jackie spent on purchasing jelly beans by multiplying 3.5 by 1.19.

\text{Amount spent by Pepper Jackie on jelly beans}=3.5\times 1.19

\text{Amount spent by Pepper Jackie on jelly beans}=4.165

Upon rounding our final answer to nearest cent we will get,

\text{Amount spent by Pepper Jackie on jelly beans}=4.165\approx4.17

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3 years ago
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The manufacturer of a laser printer reports the mean number of pages a cartridge will print before it needs replacing is 12,200.
Svetllana [295]

Answer:

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Step-by-step explanation:

Let x = number of pages ;

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2.33 * 820 = x - 12200

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How do you graph equations?
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A washer and a dryer cost $928 combined. The washer costs $78 more than the dryer. What is the cost of the dryer?
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Answer:

Step-by-step explanation:

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A recipe for snicker doodle cookies calls for 1 part cinnamon for every 3 parts sugars. How many tablespoons of cinnamon would y
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Answer:

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4 0
3 years ago
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