3 years ago

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:

$h^{-2}g= \dfrac{g}{h^2} = \dfrac{27}{3^2} = \dfrac{27}{9} = 3$

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3 years ago

If 2x - 3y = 24 and 3x + 4y = 2, what is the value of x - y?

ruslelena [56]

Answer:

Step-by-step explanation:

y = -4

x = 6

x-y = 6-(-4) = 6+4 = 10

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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]

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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

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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