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4 years ago

Find the surface area of the sphere.

Mathematics

2 answers:

crimeas [40]4 years ago

5 0

Answer:

256π sq. in.

Step-by-step explanation:

fenix001 [56]4 years ago

4 0

Answer:

804 in^2

Step-by-step explanation:

The surface area of a sphere is given by A = 4πr^2, where r is the radius of the sphere.

Here, A = 4π*8^2 in^2 (must use units of measurement)

=256π in^2, or approximately 804 in^2

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Simplify completely'''

r-ruslan [8.4K]

Answer:

$\displaystyle \frac{x + 2}{x - 1}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms/Coefficients
Factoring

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{7x^2 + 11x - 6}{7x^2 - 10x + 3}$

Step 2: Simplify

[Fraction] Factor numerator: $\displaystyle \frac{(x + 2)(7x - 3)}{7x^2 - 10x + 3}$
[Fraction] Factor denominator: $\displaystyle \frac{(x + 2)(7x - 3)}{(x - 1)(7x - 3)}$
[Fraction] Divide: $\displaystyle \frac{x + 2}{x - 1}$

6 0

3 years ago

Given the cosine equation y = 2cos(4x) - 1, What is the midline?

pogonyaev

Answer:

$y = 2 \cos(4x) - 1 \\ when \: y = 0 \\ \cos(4x) = \frac{1}{2} \\ 4x = 60 \\ x = 15 \\ when \: x = 0 \\ y = 2 - 1 = 1 \\ intercepts = > (15, \: 0) \: and \: (0, \: 1) \\ midpoints : ( \frac{15 + 0}{2} , \: \frac{0 + 1}{2} ) \\ = (7.5, \: 0.5) \\ gradient = \frac{1 - 0}{0 - 15} \\ = - \frac{1}{15} \\ y = mx + c \\ at \: (7.5, \: 0.5) \\ 0.5 = - \frac{1}{15} \times 7.5 + c \\ 0.5 = - 0.5 + c \\ c = 1 \\ \therefore \: y = - \frac{1}{15} x + 1 \\ = > 15y = - x + 15$

6 0

3 years ago

A number cube is rolled. Event A is rolling an even number, and event B is rolling a multiple of 3.

forsale [732]

Answer:

I will answer when you explain what you mean by sample space.

Step-by-step explanation:

please do not delete.

4 0

3 years ago

A sequence of transformations maps ∆ABC to ∆A′B′C′. The sequence of transformations that maps ∆ABC to ∆A′B′C′ is a reflection ac

quester [9]

The correct answer is " (1) Reflect ABC across the x-axis and call this new triangle A'B'C'. (2) Translate A'B'C' 2 units right and 6 units up so that its image is A''B''C''. "

It is assumed that the points are
A in ABC is (1,9), B in ABC is (3,12), and C in ABC is (4,4).

A'' in A''B''C'' is (3,-3), B'' in A''B''C'' is (5,-6), and C'' in A''B''C'' is (6,2).

Both triangles are congruent. Since they are congruent, there are no contractions nor dilations occured. After rotating clockwise, we get A"C"B". So we need to reflect it to get A"B"C"

8 0

4 years ago

Read 2 more answers

A cab charges the following fare for each trip.

trasher [3.6K]

Answer:

$9.78

Let's be honest, you only need an answer right?

6 0

3 years ago