3 years ago

If x^ 3 = -27, then what is x?

Mathematics

2 answers:

wariber [46]3 years ago

7 0

The cube root of -27 is -3

3√-27 = -3

You can check this by plugging your answer back it

X= -3

-3^3 = -27

LekaFEV [45]3 years ago

6 0

Take 3rd root of -27
that is -3

if you can't see it then
√-27=(√-1)(√27)=(-1)(3)=-3

You might be interested in

What is the derivative of y=3tan(x)y=3 tan (x) ?

maw [93]

$y=3tanx\\\\tanx=\frac{sinx}{cosx}\Rightarrow y=\frac{3sinx}{cosx}\\\\\\y'=\frac{(3sinx)'cosx-3sinx(cosx)'}{(cosx)^2}=\frac{3cosxcosx-3sinx(-sinx)}{cos^2x}=\frac{3cos^2x+3sin^2x}{cos^2x}\\\\=\frac{3(cos^2x+sin^2x)}{cos^2x}=\frac{3(1)}{cos^2x}=\frac{3}{cos^2x}\\\\-------------------\\\\sin^2x+cos^2x=1$

6 0

3 years ago

Read 2 more answers

What is the slope of (-15,5) and (15,20)

frutty [35]

The slope of this is 1/2.

8 0

3 years ago

Pls help me:) I rlly need it!

Alika [10]

Answer:

6 x 10^5

Step-by-step explanation:

800000 - 200000 = 600000

hope this helps!

6 0

3 years ago

Read 2 more answers

Pete saw that he was 200 yards from shore when he dove out of the boat. It took him 49 seconds to swim the first 50 yards. At th

Ivenika [448]

Answer:

147 seconds to get to the shore(after the 49 seconds)

Step-by-step explanation:

If Pete swam at a constant speed of 50 yards/49 seconds, you just have to multiply that by four, to get 200 yards. If you want the total time from his boat to shore, that is 196. If you want how much longer it would be, it would be 147 seconds

for minutes, just divide by 60

7 0

2 years ago

Find the discount to the nearest cent for: $50 shoes, 30% off.

Grace [21]

Answer:

https://www.calculatorsoup.com/calculators/financial/sale-price-calculator.php

Step-by-step explanation:

4 0

3 years ago