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Oduvanchick [21]
3 years ago
8

The radius of one sphere measures twice the length of another. The ratio of their surface areas is

Mathematics
2 answers:
Katena32 [7]3 years ago
6 0

Answer:

4:1

Step-by-step explanation:

Alex787 [66]3 years ago
4 0
4:1
Because the ratio of areas is the ratio of the radii (or diameters) squared.
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An artist wants to make alabaster pyramids using a block of alabaster with a volume of 576 cubic inches. She plans to make each
8_murik_8 [283]
Volume of pyramid:

V= \dfrac{1}{3} \cdot A \cdot H

A - base area
H - height

First count volume of one pyramid:

V=\dfrac{1}{3} \cdot 3 \cdot 4=4 [\hbox{inch}^3]

So by using 576 inch^3 you can make 576 : 4 = 144 pyramids
3 0
3 years ago
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How are operations with variables like operations with real numbers?
amid [387]

Answer:

The relation between inputs and outputs is given by an equation called the equation of function. Since the outputs are also real values, hence, reasoning by analogy, you may use the arithmetical operation between functions (addition, subtraction, multiplication, division) to produce new functions.

6 0
3 years ago
F(x) = 2x2 + 12x + 1<br> Determine the vertex
Gnom [1K]

Answer:

Step-by-step explanation:

The vertex would be the highest/lowest point so lets factor this first

when we factor we get

2(x^2+6x+8)

2(x+4) (x+2)

Using zero product property we find the 2 x values and x intercepts are

-4 and -2

the middle point of these points is -3

Substitute -3 for x and solve

2(-3+4) (-3+2)

2 * 1 *  -1

2*-1

-2

(-3,-2) is the vertex

5 0
3 years ago
How do you find the value of c that satisfy the equation:
victus00 [196]

Answer:

The value of c = -0.5∈ (-1,0)

Step-by-step explanation:

<u>Step(i)</u>:-

Given function f(x) = 4x² +4x -3 on the interval [-1 ,0]

<u> Mean Value theorem</u>

Let 'f' be continuous on [a ,b] and differentiable on (a ,b). The there exists a Point 'c' in (a ,b) such that

f^{l} (c)  = \frac{f(b) -f(a)}{b-a}

<u>Step(ii):</u>-

Given  f(x) = 4x² +4x -3 …(i)

Differentiating equation (i) with respective to 'x'

          f¹(x) = 4(2x) +4(1) = 8x+4

<u>Step(iii)</u>:-

By using mean value theorem

f^{l} (c)  = \frac{f(0) -f(-1)}{0-(-1)}

8c+4 = \frac{-3-(4(-1)^2+4(-1)-3)}{0-(-1)}

8c+4 = -3-(-3)

8c+4 = 0

8c = -4

c = \frac{-4}{8} = \frac{-1}{2} = -0.5

c ∈ (-1,0)

<u>Conclusion</u>:-

The value of c = -0.5∈ (-1,0)

         

<u></u>

8 0
3 years ago
Why is a system’s work output limited
OlgaM077 [116]
Sometimes system outputs are limited because the amount of the necessary information that is perceived in the system .
8 0
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