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3 years ago

What's 8subtract 2 over 3

Mathematics

1 answer:

torisob [31]3 years ago

3 0

To subtract fractions, find the LCD and then combine.
Exact form:
22/3

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A right cone has radius 9cm and slant height 12cm. The radius and slant height are both multiplied by 2/3. Which of the followin

Olegator [25]

Answer:

<em>The surface area is multiplied by 4/9.</em>

Step-by-step explanation:

<u>Surface Area of a Cone</u>

Being r the radius and l the slant height of a cone, then its surface area is

$SA=\pi r^2+\pi r l$

Now let's think both the radius and the slant height are multiplied by the same factor k, i.e.

r'=kr

l'=kl

The new surface area is

$SA'=\pi r'^2+\pi r' l'=\pi (kr)^2+\pi \cdot kr\cdot kl=k^2\pi r^2+k^2\pi rl$

$SA'=k^2(\pi r^2+\pi rl)=k^2\cdot SA$

The new surface area is the $k ^2$ times original SA. Since k=2/3, then

$SA'=4/9\ SA$

The surface area is multiplied by 4/9.

6 0

3 years ago

Subtract and simplify 3g-1/9-g+1/6

zlopas [31]

Final Answer: 2g + 1/18

3g - 1g - 1/9 + 1/6
2g - 1/9 + 1/6

- 1 × 2 -2
------- -------
9 × 2 18

+ 1 × 3 3
------- -------
6 × 3 18
__________________
- 2 + 3 1
------------- = -----------
18 18

5 0

2 years ago

PLS HELP ASAP

ivanzaharov [21]

Answer:

hope it helps

.........

7 0

2 years ago

What is X^2-9=0 I really need the answers

777dan777 [17]

Answer:

X^2-9=0 is x2 = 9

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Match each pair of polynomials to their sum.

lara [203]

Answers:

(12x^2 + 3x + 6) + (-7x^2 – 4x – 2) = 5x^2 - x + 4

(2x2 – x) + (-x – 2x2 – 2) = -2x - 2

(x3 + x2 + 2) + (x2 – 2 – x3) = 2x^2

(x2 + x) + (x2 + 8x – 2) = 2x^2 + 9x - 2

3 0

3 years ago