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3 years ago

Andre types 208 words in 4 minutes. Noah types 342 words in 6 minutes. Who types faster?

Mathematics

1 answer:

Vesna [10]3 years ago

3 0

Answer:

Noah types faster

Step-by-step explanation:

Andre's typing speed per minute - 52 words per minute

$\frac{208}{4}$ = 52

Noah's typing speed per minute - 57 words per minute

$\frac{342}{6}$ = 57

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The grocery store has 2 1/3 times as many cashiers in late afternoon than in the morning. If there are 21 cashiers at 10:00 am,

Fantom [35]

Well 21 times 2 is 42 and 1/3 of 21 is 7 so 42+7 is 49. hope this is right

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2 years ago

Which is the following quotient 1/1+3 squared

likoan [24]

Answer:

Step-by-step explanation:

5 0

3 years ago

Rename 1/5 and 9/10 using the least common denominator

skad [1K]

Answer:

2/10

Step-by-step explanation:

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3 years ago

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nordsb [41]

Answer:

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Step-by-step explanation:

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3 years ago

An apartment complex has a floor plan with dimensions shown. To effectively air condition a room, 20 BTU’s are required for ever

kifflom [539]

12,900 BTU's are required to cool the room effectively.

Step-by-step explanation:

Step 1:

We must calculate the area of the entire shape to determine the minimum BTU's required to cool the room effectively.

It is made up of a semi-circle a rectangle, and a trapezoid.

Step 2:

The area of a semi-circle $=\frac{ \pi r^{2} }{2} .$

Here, the diameter is 20 feet so the radius is 10 feet.

The area of the semi-circle $=\frac{ \pi r^{2} }{2} =\frac{ (\pi) (10^{2}) }{2} = 157.079$ square feet.

The area of a rectangle $= (l)(w).$

The length of the rectangle is 22 feet and the width is 20 feet.

The area of a rectangle $= (l)(w) =(22)(20) = 440$ square feet.

The area of a trapezoid $=\frac{a+b}{2} (h).$

Here $a=12, b= 20, h= 3$ .

The area of a trapezoid $=\frac{12+20}{2} (3) = 48$ square feet.

Step 3:

The total area of the floor plan $=157.079+440+48 = 645.079$ square feet.

If 20 BTU's are required for a single square foot,

The number of BTU's for 645.079 square feet $= (645.079)(20)=12,901.58$ BTU's.

Rounding this off, we get 12,900 BTU's required to cool the room effectively.

7 0

3 years ago