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LenaWriter [7]
3 years ago
8

Which expression is equivalent to21^3 sqrt15 - 9^3 sqrt 15 ?

Mathematics
1 answer:
fgiga [73]3 years ago
7 0

Answer:

D.12^3 sgrt 15

Sana makatulong

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Firlakuza [10]

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the answer is 92 rounded up

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Question 12 I mark as brainliest ​
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Answer: i think it’s A and D

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What is the area of a triangle whose vertices are R(−4,2) , S(1,2) , and T(−5,−4)?
olga_2 [115]

Fisrt is solve the distance of the segments using distance formula

Distance =sqroot[(x2−x1)^2+(y2−y1)^2]

So ditance of RS = 5

ST = 8.49

TR =6.08

The using herons formula

Area = sqrt ( s ( s-a) ( s-b) ( s-c) )

Where s s = 1/2 ( a + b + c )

And a, b , c are length of the sides

S = 9.785

Area = 14.99

5 0
3 years ago
Divide 36X cubed -96X squared +48X by 12 X
saul85 [17]

Answer:

The answer to your question is        3x³   - 8x      + 4

Step-by-step explanation:

Divide  36³ - 96x² + 48x by 12x

                                                             3x³   - 8x      + 4

                                                 12x   36x³  -  96x²  +  48x                

                                                        - 36x³

                                                             0     - 96x²

                                                                    + 96x²

                                                                         0      +  48x

                                                                                  -  48x

                                                                                        0

1st step. Divide 36x³ by 12 x = 3x², place the result above 36x³

2nd step. Multiply 3x³ by 12x, change the sign and place the result below 36x³.

3rd step. Add and place -96x² next to the result

4rd step. Divide -96x² by 12x, and place the result next to 3x³. Result = -8x

5th step. Multiply 12x by -8x, change signs and place the result below -96x².

6th step. Add +96x² and -96x².

7th step. Divide 48x by 12x, and place the result next to the previous result.

8th step. Multiply 4 by 12x, change signs and place the result below 48x.

9th step. Add the results.

10th step. the result is    3x³   - 8x      + 4

6 0
4 years ago
Encuentre el radio y el área de círculos cuya circunferencias tienen las siguientes medidas
Vadim26 [7]

Answer:

Los radios de los círculos son r_{1} \approx 9.995, r_{2} \approx 2.013, r_{3} \approx 7.592, respectivamente.

Las áreas de los círculos son A_{1} \approx 313.845, A_{2} \approx 12.730, A_{3} \approx 181.077, respectivamente.

Step-by-step explanation:

La circunferencia (s) se calcula mediante la siguiente fórmula:

s = 2\pi\cdot r (1)

Donde r es el radio del círculo.

Una vez hallado el radio, se determina el área de la figura geométrica (A) mediante la siguiente fórmula:

A = \pi\cdot r^{2} (2)

Si conocemos que las circunferencias son s_{1} = 62.8, s_{2} = 12.65 y s_{3} = 47.7, respectivamente:

1) Radios de los círculos

r_{1} = \frac{s_{1}}{2\pi}, r_{2} = \frac{s_{2}}{2\pi}, r_{3} = \frac{s_{3}}{2\pi}

r_{1} \approx 9.995, r_{2} \approx 2.013, r_{3} \approx 7.592

2) Áreas de los círculos

A_{1} = \pi\cdot r_{1}^{2}, A_{2} = \pi\cdot r_{2}^{2}, A_{3} = \pi\cdot r_{3}^{2}

A_{1} \approx 313.845, A_{2} \approx 12.730, A_{3} \approx 181.077

6 0
3 years ago
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