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AnnyKZ [126]
3 years ago
5

Instructions:Select the correct answer.

Mathematics
2 answers:
wel3 years ago
8 0
The correct answer is A here is the math
12+ (3/4x) = 393/4x = 39 -12(4/3)(3/4) = 27 (4/3)x = 36
Luba_88 [7]3 years ago
3 0

Answer: The things that we know in this problem are:

"the number of postcards is 12 more than 3/4 of the number of stamps"

This means that if P is the number of postcards, and S the number of stamps, then:

P - (3/4)S = 12

And we also know that P = 39

39 - (3/4)S = 12

(3/4)S =39 - 12 = 27

S = (4/3)*27 = 36

So he has 36 stamps.

then the correct answer is A.

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Could use some help with these. They r confusing!!
Gala2k [10]

Step-by-step explanation:

The top part is a cone.  It's volume is:

V = ⅓ π r² h

where r is the radius (half the diameter) and h is the height.

The bottom part is a cylinder.  It's volume is:

V = π r² h

where r is the radius (half the diameter) and h is the height.

The radius of the cone is 36/2 = 18 ft, and the height is 12 ft.  So the volume is:

V = ⅓ π (18 ft)² (12 ft)

V = 4,071.5 ft³

The radius of the cylinder is 36/2 = 18 ft, and the height is 39 ft.  So the volume is:

V = π (18 ft)² (39 ft)

V = 39,697.2 ft³

Therefore, the total volume is:

4,071.5 ft³ + 39,697.2 ft³ ≈ 43,769 ft³

4 0
2 years ago
Heather is a cashier. She can ring up 12 customers in 9 minutes.At this rate, how many minutes does it take her to ring up 4 cus
masya89 [10]

12 customers = 9 mins

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4 customers = 3/4 x 4 = 3 mins

Answer: 3 mins

4 0
3 years ago
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faust18 [17]

Answer:

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Step-by-step explanation:

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MA_775_DIABLO [31]
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The height of a clocktower is 44 meters. Max, who is standing near the clocktower, casts a 7 meter shadow and is 2 meters tall.
anyanavicka [17]

Answer:

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