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Debora [2.8K]
3 years ago
6

Simplest form to write (2×6)³/²

Mathematics
1 answer:
dolphi86 [110]3 years ago
4 0

Answer: 24\sqrt{3}

Step-by-step explanation:

You need to remember that \sqrt[n]{a} can be written in the following for:

a^{\frac{1}{n}}

Knowing this and given the expression (2*6)^{\frac{3}{2}}, you need to  multiply the numbers inside the parentheses:

 (12)^{\frac{3}{2}}

Rewrite it in this form:

=\sqrt{12^3}==\sqrt{1,728}

Descompose 1,728 into its prime factors:

1,728=2*2*2*2*2*2*3*3*3=2^6*3^3

Applying the Product of power property, which states that:

(a^m)(a^n)=a^{(m+n)}

You can say that:

 =\sqrt{1,728}=\sqrt{2^6*3^2*3}

Simplifying, you get:

=2^3*3\sqrt{3}=24\sqrt{3}

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Aubrey is making cone-shaped hats for a birthday party. She mistakenly thinks that she will need about 104 square inches of pape
jenyasd209 [6]

Answer:

C. About 75 in²; Aubrey found the surface area of the cone and included the base.

Step-by-step explanation:

In the questions above we were given the following:

Cone with

Diameter(D) = 6 inches

Slant height (l) = 8 inches.

Aubrey made an error in her calculation.

She found the Total Surface area of the cone using the formula:

Total Surface Area of a cone = πrl + πr²

= πr(l + r)

The Total surface area of a cone is the calculated as Sum of the curved surface area of a cone and the base of the cone.

Where:

Curved surface area of the cone is calculated as = πrl

Base of a cone is calculated as = πr²

Where r = radius of the cone

l = slant height of the cone

In the question, we were given

slant height(l) = 8 inches.

radius = Diameter ÷ 2 = 6÷2 = 3 inches.

Using π = 3.14

Surface area = 3.14 × 3(8+3)

= 9.42 × 11

Surface area = 103.62 in²

Approximately to the nearest inch = 104 in² or 104 square inches.

But this answer is WRONG.

The RIGHT FORMULA Aubrey should have used is

Curved Surface Area or the Lateral Area of a Cone = πrL

slant height(l) = 8 inches.

radius = Diameter ÷ 2 = 6÷2 = 3 inches.

Using π = 3.14

Curved Surface Area of a Cone = πrL

= 3.14 × 3 inches × 8 inches

= 75.36 square inches or 75.36in²

Approximately to the nearest inch = 75 square inches or 75 in².

This is the correct answer.

The error Aubrey made was she calculated the Total surface area of the cone which includes the base of the cone instead of calculating the curved surface area of the cone only.

Hence, from the above calculation , we can see that Option C "About 75 in²; Aubrey found the surface area of the cone and included the base" is the correct option.

5 0
2 years ago
Students in a fitness class each completed a one-mile walk or run. The list shows the time it took each person to complete the m
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5 0
3 years ago
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What is the answer to this question
Ratling [72]
Hello!

As you cans see, the angle is a right angle, which measures 90°. One of the angles measure 35°

90 - 35 = 55

That means 5x = 55°

Divide both sides by 5

\frac{5x}{5} =  \frac{55}{5}

\framebox{x = 11 \°}
7 0
3 years ago
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Help please! need it asap
kap26 [50]

Answer:

AE = 19 and <EDC = 59

Step-by-step explanation:

i am almost positive that those are both right

7 0
3 years ago
Ahmad,Barry,andTara collected some seashells.Ahmad collected 1 over 6 of the seashells,Barry collected 1and 2 of thr seashell, a
VashaNatasha [74]
Ahmad = 1/6 
Barry = 1/2
Tara = 1 - 1/6 - 1/2 = 1/3

1/3 of the seashells = 76
3/3 of the seashells = 76 x 3
3/3 of the seashells = 228

----------------------------------------------------------------------------
Answer: They had 228 seashells altogether.
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4 0
3 years ago
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