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3 years ago

What is the surface area of the cube below ?

Mathematics

2 answers:

dusya [7]3 years ago

6 0

Answer:

Step-by-step explanation:

Since a cube has 6 sides, the surface area of a cube is 6 times the area of one of the sides. Therefore:

$SA=6\cdot 9^2=6\cdot 81= 486\text{ units}^2$

Hope this helps!

Andrei [34K]3 years ago

3 0

Answer:

486

Step-by-step explanation:

there are 6 sides in a cube

according to the picture, the length and width of each side is 9

multiply 9 by 9 for 1 side= 81

there are 6 sides

so multiply 81 by 6= 486

so your answer is b 486.

pls mark brainliest

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Let f(x) = x^2 + 6x.

rusak2 [61]

Answer:

(A) The slope of secant line is 18.

(B) The slope of secant line is h+16.

Step-by-step explanation:

(A)

The given function is

$f(x)=x^2+6x$

At x=3,

$f(3)=(3)^2+6(3)=27$

At x=9,

$f(9)=(9)^2+6(9)=135$

The secant line joining (3,27) and (9,135). So, the slope of secant line is

$m=\dfrac{y_2-y_1}{x_2-x_1}$

$m=\dfrac{135-27}{9-3}=18$

The slope of secant line is 18.

(B)

The given function is

$f(x)=x^2+6x$

At x=5,

$f(5)=(5)^2+6(5)=55$

At x=5+h,

$f(5+h)=(5+h)^2+6(5+h)=h^2 + 16 h + 55$

The secant line joining (5,55) and $(5+h,h^2 + 16 h + 55)$ . So, the slope of secant line is

$m=\dfrac{h^2 + 16 h + 55-55}{5+h-5}$

$m=\dfrac{h^2 + 16 h }{h}$

$m=h+16$

The slope of secant line is h+16.

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4 years ago

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Step-by-step explanation:

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3 years ago

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pickupchik [31]

Answer:

$256cm^2$

Step-by-step explanation:

Calculate the area of the two triangles first: 6 * 16 = 96

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3 years ago

What is the slope of the following graph? (write your answer as a fraction unless divided by 1. Do not use spaces in your answer

alexira [117]

The slope of the graph is 4/5

<h3>How to determine the slope</h3>

Using the formula

Slope = Δ y-axis / Δ x- axis

y2 = -4

y1 = 0

x2 = -5

x1 = 0

Slope = $\frac{y2 - y1}{x2 - x1}$

Substitute the values into the formula

<em>Slope = </em> $\frac{-4 - 0}{- 5 - 0}$

Slope = $\frac{-4}{-5}$

Slope = $\frac{4}{5}$

Therefore, the slope of the graph is 4/5

Learn more about slope here:

brainly.com/question/3493733

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