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Dmitriy789 [7]
2 years ago
15

What is the cube root of -0.216?​

Mathematics
1 answer:
timofeeve [1]2 years ago
6 0

Answer:

-0.6

Step-by-step explanation:

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PLEASE HELP!! THANK YOU!
Korvikt [17]
Answers A and C and correct for this equation. 
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3 years ago
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Help I’m very confused and was wondering if anyone is willing to help.
beks73 [17]

Answer:

57°

Step-by-step explanation:

LHS angle=RHS angle=57° (vert. opp angles)

5 0
3 years ago
The Johnson twins were born eleven years after their older sister. This​ year, the product of the three​ siblings' ages is exact
vodka [1.7K]
So there are 3 siblings: the first twin, the second twin, and their older sister.

Since the sister is older by 11 years, you can represent their relationship with the following equation;
age of twin = age of older sister - 11
t = s - 11

Representing this next part may be a little hard to show, but i'll do my best :)

Adding the ages together can be represented like this;
total age = t + t + s
If the product of their ages ( t * t * s ) is 1181 more than the sum, you can show it like this:
t * t * s = (t + t + s) + 1181
Now you substitute in (s - 11) for t because s = t - 11.
t * t * s = (t + t + s) + 1181\\
(s-11) * (s-11) * s = ((s-11) + (s-11) + s) + 1181\\
(s^{2}-22x+121)*s=s+s-11-11+1181\\
s^{3}-22s^{2}+121s-2s=1159\\
s^{3}-22s^{2}+118s-1159=0
Factor:
Since it's a third-degree equation, I just entered it into a polynomial solver in my calculator. There was only one factor listed, x = 19. Using (s - 19) = 0 as a factor, the equation becomes the following:
s^{3}-22s^{2}+118s-1159=0\\
(s-19)(s^{2}-3s+61)=0
Using the quadratic formula, you get:
s= \frac{-b(+-)\sqrt{b^{2}-4ac}}{2a}\\
s= \frac{-(-3)(+-)\sqrt{(-3)^{2}-4(1)(61)}}{2*1}\\
s= \frac{3(+-)\sqrt{(9)-244}}{2}\\
s= \frac{3(+-)\sqrt{-235}}{2}

Since you have a square root of a negative number, the answer will be imaginary. You cannot have an age that is imaginary, so the age of the older sister (s) is 19 years.

Because t = s - 11, that means that t = (19) - 11 = 8.
t is the age of the twins, so the twins are 8 years old.
8 0
3 years ago
How can you establish credit scores
zzz [600]
You'll need to start with a secured credit card
5 0
3 years ago
Read 2 more answers
solve this system of linear equations separate the x- and y- values with a comma 6x=-32-10y 11x=8-10y
Evgen [1.6K]
Hello :
<span>6x=-32-10y  ...(1)
11x=8-10y ....(2)
by (1) : x = -32/6 -(10/6)y  .....(*)
 x = -16/3-(5/3)y
subst in (2) : 11(</span>-16/3-(5/3)y)-10y  .......calculate y....then x by : (*)
5 0
3 years ago
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