PLEASE HELP ME I DONT KNOW THE ANSWERR

Mathematics

2 answers:

Rom4ik [11]3 years ago

6 0

I can’t see the question bro

LiRa [457]3 years ago

6 0

Let u = x^(1/3)

Then,

u^2 - 6u - 27 = 0

(u-9)(u+3)=0
u = 9, u = -3

Substitute back

X^(1/3) = 9
(X^(1/3))^3 = 9^3
X = 729

And
X^(1/3) = -3
(X^(1/3))^3 = -3^3
X = -27

You might be interested in

288 Miles on 12 gallons of fuel; 240 miles on 10 gallons of fuel, are they Equivalent?

sweet-ann [11.9K]

288/12 = 24

240/10 = 24

Yes

8 0

4 years ago

Which number is the smallest? 4.4 ⋅ 10−5, 3.99 ⋅ 10−6, 2.6 ⋅ 102, 1.85 ⋅ 103

harina [27]

The answer is: [B]: " 3.99 * 10⁻⁶ " .
______________________________________________
Note:
______________________________________________
We are given the following answer choices, and we are asked which one is the "smallest number" :
_______________________________________________
[A]: 4.4 * 10⁻⁵
_________________________________________
[B]: 3.99 ⋅ 10⁻⁶
______________________
[C]: 2.6 ⋅ 10²
______________________
[D]:  1.85 ⋅ 10³
_______________________
         We can rule out answer choices: [C] and [D]; since these values, essentially "direct us" to move the decimal point FORWARD "2 places" and "3 places", respectively; whereas choices [A] and [B] essentially "direct us" to move the decimal point BACKWARD "5 places" and "6 places" respectively. Note that all values given in the answer choices are written in proper "scientific notation" —that is, beginning with a "single integer followed by (a) decimal point(s) and then additional digits (when needed).  So, the answer choice that essentially "directs us" to move the decimal point BACKWARD "6 places" —
___________________________________________________
             →   Answer choice: [B]:  " 3.99 * 10⁻⁶ " ;
______________________________________________
                  is the smallest value ; and as such, the correct answer.
________________________________________________________

7 0

3 years ago

Read 2 more answers

√2/k+√2=1/k-√2 leaving your answer in the form p+m√n

vesna_86 [32]

Answer: in decimal form=0.14644660

Step-by-step explanation:

4 0

3 years ago

What’s is Tan^-1(30/11)

nasty-shy [4]

Answer: