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Tems11 [23]
2 years ago
8

Can you find the cube root of a negative number? If so, it is positive or negative? Explain your reasoning.

Mathematics
1 answer:
Aleks04 [339]2 years ago
6 0
It will always be negative, because negative times negative times negative is positive.  for example,  -1 x -1 x -1 = 1 x -1  = -1
So when finding cube root you find the number which can multiply itself three times to get the number.
Cube root of -8 is -2
because -2 x -2 x -2
             =4 x -2
             =-8
Thus all cube root of negative numbers are negative because negative times  negative times negative is negative. 
              
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Simplify the rational expressions. State any excluded values. X^2-4/2-x
tatiyna

Answer:

-x-2;  x\neq2

Step-by-step explanation:

\frac{x^2-4}{2-x}-->

\frac{(x-2)(x+2)}{(2-x)} -->

-(x+2); x CAN'T equal 2, because the denominator of the original fraction would be 0, which would make the term undefined.

4 0
3 years ago
At 9 o’clock in the morning, the temperature was 29 Fahrenheit it dropped 5 Fahrenheit each hour what was the temperature at 4 o
suter [353]

Answer:

-6 degrees fahrenheit

Step-by-step explanation:

7×5=35

29-35=-6

4 0
3 years ago
Helppppp pleaseee????
Novosadov [1.4K]

Answer:

Lower quartile 3, median 5, Upper quartile 7

Step-by-step explanation:

First divide the data in half  1 3 4  and 6 7 7

The median is the middle between 4 and 6, so it is 5.

The lower quartile is the median in the lower half, 3

The upper quartile is the median in the upper half, 7

7 0
2 years ago
How do you find the area of a right triangle if you only have the base
valentina_108 [34]

Step-by-step explanation:

You can find the area of a right triangle the same as you would any other triangle by using the following formula:

A = (1/2)bh, where A is the area of the triangle, b is the length of the base and h is the height of the triangle; However, with a right triangle, it's much more convenient in finding its area if we utilize the lengths of the two legs (the two sides that are shorter than the longest side, the hypotenuse and that are perpendicular to each other and thus form the right angle of the right triangle), that is, since the two legs of a right triangle are perpendicular to each other, when we treat one leg as the base, then, consequently, we can automatically treat the length of the other leg as the height, and if we initially know the lengths of both legs, then we can then just plug this information directly into the area formula for a triangle to find the area A of the right triangle.

For example: Find the area of a right triangle whose legs have lengths of 3 in. and 4 in.

Make the 4 in. leg the base. Since the two legs of a right triangle are perpendicular to each other, then the length of the other leg is automatically the height of the triangle; therefore, plugging this information into the formula for the area of a triangle, we have:

A = (1/2)bh

= (1/2)(4 in.)(3 in.)

= (1/2)(12 in.²)

A = 6 in.² (note: in.² means square inches)

8 0
3 years ago
There are 18 boys in a class there are w fewer boys than girls how many students are there in the class
Pachacha [2.7K]
The Number of boys in the class is: 18

 Let's call "g" to the number of girls in the class.

 The problem says that there is "w" fewer boys than girls, so we have:

 g-w=18

 Then, the number of girls in the class  is:

 g=18+w

 Let's call "x" to the total number of studens in the class:

 x=g+18

 When we substitute g=18+w  into x=g+18, we obtain:

 x= (18+w)+18

 The total number of studens in the class is:

 x=w+36
6 0
3 years ago
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