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4 years ago

What is the value of a(8) the surface area of a sphere with a radius of 8 units

Mathematics

1 answer:

Alexxx [7]4 years ago

4 0

$A(r)+4\pi r^2\\\\r=8\\\\substitute:\\\\A(8)=4\pi\cdot8^2=4\pi\cdot64=256\pi\\\\Answer:\ D.\ 256\pi$

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Find the product<br> a4(3a2 - 2a + 1)

gulaghasi [49]

Answer:

16a^2 + 4a or 4a(4a+1)

Step-by-step explanation:

Use the distributive property (or FOIL).

First, the 3a2 becomes 6a.

6a x 4a = 24a^2

4a x -2a = 8a^2

4a x 1 = 4a

Simplify.

24a^2 - 8a^2 + 4a

=16a^2 + 4a

Other options:

=16a^2 + 4a

=4a(4a+1)

Hope this helped.

5 0

3 years ago

How to factor z²-4z+4

allochka39001 [22]

$\implies {\blue {\boxed {\boxed {\purple {\sf { \: ({ \: z - 2 \: })^{2} \: }}}}}}$

$\large\mathfrak{{\pmb{\underline{\orange{Step-by-step\:explanation}}{\orange{:}}}}}$

${z}^{2} - 4z + 4$

$= {z}^{2} - 2z - 2z + 4$

Taking " $z$ " as common from first two terms and " $2$ " from last two terms, we have

$= z \: ( \: z - 2 \: ) - 2 \: ( \: z - 2 \: )$

Taking the factor $(z-2)$ as common,

$= ( \: z - 2 \: )( \: z - 2 \: )$

$= {( \: z - 2 \: )}^{1 + 1}$

$= ({ \: z - 2 \: })^{2}$

$\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35❦}}}}}$

8 0

3 years ago

(4x3 + 3x2 - 30x - 10) ÷ (x -3)

pogonyaev

(12x+6x-30x-10)/(x-3)=
=(-12x-10)/(x-3)
=-12x*+36- 10x+30=
=-22x+56

5 0

3 years ago

Helppp - find the area of each figure & round to the nearest tenth

Karo-lina-s [1.5K]

Answer:

112 ft

Step-by-step explanation:

9) Here, we are finding the area of a triangle. The equation for area is:

$A = \frac{1}{2} *b*h$

Where A is area, b is the base, and h is height.

$A = \frac{1}{2} * 16 * 14$

$A = 112$

5 0

2 years ago

If you are good at data and graphs, pls help me! Use the screenshot below!

svlad2 [7]

Answer:

400

Step-by-step explanation:

5 0

3 years ago