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Marina86 [1]
2 years ago
6

Rewrite 3^-4 without negative exponents a. 81 b. -81 c. 1/81 d. -1/81

Mathematics
1 answer:
vodka [1.7K]2 years ago
7 0
<h3>Answer</h3>

1/81(C)

<h3>Step-by-step solution</h3>

(3)^4=81

if 3^-1=1/3

so, 3^-4=1/81(C)

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A sphere has a volume of Vequals=3600 in cubedin3. Find its surface area.
Mice21 [21]
\bf \textit{volume of a sphere}\\\\&#10;V=\cfrac{4}{3}\pi r^3\qquad &#10;\begin{cases}&#10;r=radius\\&#10;------\\&#10;V=3600&#10;\end{cases}\implies 3600=\cfrac{4}{3}\pi r^3&#10;\\\\\\&#10;3600=\cfrac{4\pi r^3}{3}\implies \sqrt[3]{\cfrac{3\cdot 3600}{4\pi }}=\boxed{r}\\\\&#10;-----------------------------\\\\&#10;\textit{surface area of a sphere}\\\\&#10;S=4\pi r^2\implies S=4\pi \left(\boxed{\sqrt[3]{\cfrac{3\cdot 3600}{4\pi }}}  \right)^2

simplify away
8 0
3 years ago
Help please!!!!!!!!!!!!!
KatRina [158]
Hello!

For this you can plug in the x values in the choices and see if you get the y value

y = -4^{3}  - (-4)

-4^3 is -64

when you subtract a negative you are just adding

-64 + 4 = 60

Then you do the second one

y =  -3^{3}  - (-3)

-3^3 is -27

-27 + 3 is -24

Then the third one

y =  -2^{3}  - (-2)

-2^3 is -8

-8 + 2 is -6

Then the last one

y =  -1^{3}  - (-1)

-1^3 is -1

-1 + 1 = 0

Since we did not get -2 the answer is D

Hope this Helps!
7 0
3 years ago
You roll two fair dice, one green and one red. (a) Are the outcomes on the dice independent? Yes No (b) Find P(1 on green die an
ASHA 777 [7]

Answer:

a

  Yes

b

 P(1 \& 5) = \frac{1}{36}

c

 P(5 \& 1) = \frac{1}{36}

d

 P(5 \& 1 | 1\& 5  ) = \frac{1}{18}

Step-by-step explanation:

From the question we are told that

     Two fair dice, one green and one red were rolled

Generally the  outcomes on the dice independent because the outcome on the first dice is not affected by the second die

Generally the  probability of getting a 1  on a dice rolled is  P(1) =  \frac{1}{6}

the  probability of getting a 5 on a dice rolled is  P(5) =  \frac{1}{6}

Generally the probability of P(1 on green die and 5 on red die) is mathematically represented as

         P(1 \& 5) = \frac{1}{6}  *\frac{1}{6}

         P(1 \& 5) = \frac{1}{36}

Generally the probability of P(5 on green die and 1 on red die) is mathematically represented as

          P(5 \& 1) = \frac{1}{6}  *\frac{1}{6}

         P(5 \& 1) = \frac{1}{36}

Generally the probability of P((1 on green die and 5 on red die) or (5 on green die and 1 on red die)) is mathematically represented as

          P(5 \& 1 | 1\& 5  ) = \frac{1}{36} + \frac{1}{36}

         P(5 \& 1 | 1\& 5  ) = \frac{1}{18}

8 0
3 years ago
Help with this thing ??
serious [3.7K]

Answer:

1/4

Step-by-step explanation:

I'm not sure if he wants the Dilution factor or the scale but anyway

CBA = 4 C'B'A'

Scale 1/4

5 0
3 years ago
Use the hundreds try to find a mystery number The number has 2 even digits the number in the tens place is greater than the numb
AlladinOne [14]

Answer:

84

Step-by-step explanation:

2 even numbers and its sum is 12: 4, 8 and 6, 6

tenth place > ones place   84

8 0
3 years ago
Read 2 more answers
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