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Stella [2.4K]
3 years ago
7

The diameter of a US penny is 3/4 inch. How many pennies would it take to make a row of 42 inches long?

Mathematics
1 answer:
Anon25 [30]3 years ago
7 0
For the penny question the answer is 56
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H^-2g for h=3 and g=27
Alexeev081 [22]
Plug h = 3 and g = 27 into the expression:

h^{-2}g=  \dfrac{g}{h^2} = \dfrac{27}{3^2} = \dfrac{27}{9} = 3
3 0
3 years ago
If 2x - 3y = 24 and 3x + 4y = 2, what is the value of x - y?
ruslelena [56]

Answer:

10

Step-by-step explanation:

<u><em>y = -4 </em></u>

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<em><u>x-y = 6-(-4) = 6+4 = 10</u></em>

<em><u /></em>

8 0
3 years ago
The area of the Everglades is about 1,900 square kilometers. What is the approximate size of the Everglades in acres?
Vera_Pavlovna [14]
America's Everglades<span> once covered almost 11,000 </span>square miles<span> of south Florida. ... half of the </span>1900<span>, the </span>Everglades<span> today is half the </span>size<span> it was a century ago. 
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8 0
3 years ago
The pentagonal prism has a perpendicular distance of 14 units between the bases. The volume of the prism is 840 cubic units. Wha
Leno4ka [110]

Answer:

Option 4. Perimeter = 30 units

Step-by-step explanation:

Since the volume of a pentagonal prism is 840 cubic units.

Perpendicular distance between the bases = 14 units

We know volume of a pentagonal prism = Area of base × distance between the bases

840 = Area × 14

Area = 840/14 = 60 square units

Now area of a pentagon

A=\frac{a^{2}}{4}\times\sqrt{5(5+2\sqrt{5})}

1.72a^{2}=60

a^{2}=\frac{60}{1.72}=34.90

a=\sqrt{34.9}=5.91

Therefore perimeter of the pentagon = 5×a = 5×5.91 = 29.54 ≈ 30 units

8 0
3 years ago
Kate baked a rectangular cake for a party she used 42 inches of frosting around the edges of the cake if the cake was 9 inches w
Leno4ka [110]
9 + 9 = 18
42 - 18 = 24
24 / 2 = 12
the length is 12 inches
7 0
3 years ago
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