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2 years ago

Part One: Find SURFACE AREA. Show your calculations for each face.

Mathematics

1 answer:

erma4kov [3.2K]2 years ago

3 0

Answer:

Step-by-step explanation:

For Part A:

Surface Area = πr(r+ $\sqrt{h^{2} + r^{2} }$ )

Surface Area = π 3 ( 3 + $\sqrt{16 + 9}$ )

Surface Area = π * 3 (8)

Surface Area = π * 24

Surface Area =75.4

For Part B

V = πr^2 h/3

V = π * 9 * 4/3

v= 37.7

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What are the first five terms, a1, a2, a3, a4, a5 of the sequence defined by an= n^2-9/ n^3 and how can the sequence be describe

Valentin [98]

The first five terms of the sequence are -8, -5/8, 0, 5/64 and 16/125

<h3>Recursive form of a sequence</h3>

Given the nth term of a sequence expressed as:

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Determine the first five terms

If n = 1

a1 = 1^2-9/ 1^3

a1 = -8/1

a1 = -8

If n = 2

a2 = 2^2-9/ 2^3

a2 = -5/8

If n = 3

a3= 3^2-9/ 1^3

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If n = 4

a4 = 4^2-9/ 4^3

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If n = 5

a5 = 5^2-9/ 1^3

a5 = 25-9/5^3

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Hence the first five terms of the sequence are -8, -5/8, 0, 5/64 and 16/125

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2 years ago

Find the x will name brainlist

Alenkasestr [34]

$\huge \boxed{\mathbb{QUESTION} \downarrow}$

Find x.

$\large \boxed{\mathbb{ANSWER\: WITH\: EXPLANATION} \downarrow}$

To solve these type of problems you need to use the pythagoras theorem ⇨ Hypotenuse² = Base² + Altitude².

Here,

Altitude = 1.6 cm.
Base = 1.2 cm
Hypotenuse = x

Now, let's solve for x.

Hypotenuse² = Base² + Altitude²

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x = √4

x = 2.

So, the value of x is 2 cm.

Pythagoras theorem can be used only in the cases of right-angled triangles. Here, it's given that the triangle is right angled so we can use this theorem.
To solve the squares if decimals, take them as whole numbers & then just add the decimal points. For example, ⇨ for (1.2)², take it as 12² , then multiply 12 by 12, you'll get 144. Now, add the decimal place accordingly ⇨ 1.44 . So, (1.2)² = 1.44.

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Given:

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Find:

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