Help, Fast!!! In class rn and need help!

Answer:

not a real number

Step-by-step explanation:

any negative number under a square root sign, except for 0, isn't real

On evaluating the given roots,

(a) [tex]$-(\sqrt[3]{8}) = -2$[/tex]

(b) [tex]$\sqrt[4]{-81}$[/tex] is not a real number

(a) [tex]$-(\sqrt[3]{8})$[/tex]:

The cube root of 8 is the number that, when raised to the power of 3, equals 8. In this case, the cube root of 8 is 2, because [tex]2^3 = 8[/tex].

Since we have a negative sign in front of the cube root, the result will be the negative value of the cube root of 8.

Therefore, [tex]$-(\sqrt[3]{8}) = -2$[/tex].

(b) [tex]$\sqrt[4]{-81}$[/tex]:

The fourth root of a number is the number that, when raised to the power of 4, equals the given number.

In this case, we are looking for the fourth root of -81.

However, the fourth root of a negative number is not a real number. This is because raising a positive number to an even power (in this case, 4) will always result in a positive value, and there is no real number that, when raised to the power of 4, gives a negative result.

Therefore, the fourth root of -81 is not a real number.

To know more about roots, refer here:

https://brainly.com/question/12105008

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Answer:

9 dollars per pound of salmon

Answer:

3 hours and 45 minutes i hope i helped you :)))

Step-by-step explanation:

Answer: £784.08

Step-by-step explanation:

First find 1% of 800, which is 800/100=£8

800-8= £792 after 1 year

find 1% of 792, which is 792/100=£7.92

792-7.92= £784.08

Answer:

[tex]\frac{4\pi (3)^{3} }{3}[/tex]

Step-by-step explanation:

Because radio=6/2=3 cm (half of diameter)

I hope this help you

It's very difficult to understand the chart.Can you please take a screenshot of the chart?

Answer:

see below

Step-by-step explanation:

2/5 + 1/3 + x = 1

Get a common denominator of 15

2/5 * 3/3 + 1/3 *5/5 +x = 1

6/15 + 5/15 +x = 1

11/15 + x = 1

Subtract 11/15 from each side

11/15 +x-11/15 =15/15-11/15

x = 4/15

Answer:

Approximately [tex]30\; \rm N[/tex] toward the center of the object.

Step-by-step explanation:

Look up the gravitational constant and the mass of the earth:

[tex]\begin{aligned}G &\approx 6.67 \times 10^{-11}\; \rm m^{3} \cdot kg^{-1} \cdot s^{-2} \\ &= 6.67 \times 10^{-11} \; \rm N \cdot m^{2} \cdot kg^{-2}\end{aligned}[/tex].

[tex]M \approx 5.97 \times 10^{24}\; \rm kg[/tex].

Convert the unit of distance to standard units:

[tex]\begin{aligned}r &= 25600\; \rm km \\ &= (25600 \times 10^{3})\; \rm m \\ &= 2.56 \times 10^{7}\; \rm m\end{aligned}[/tex].

Consider two spherical objects with mass [tex]m_{1}[/tex] and [tex]m_{2}[/tex]. Let [tex]r[/tex] denote the distance between the centers of the two objects. By Newton's Law of Universal Gravitation, the size of the gravitational force between these two objects would be:

[tex]\begin{aligned}F &= \frac{G \cdot m_{1} \cdot m_{2}}{r^{2}}\end{aligned}[/tex].

Thus, the size of the gravitational force between this object and the earth would be:

[tex]\begin{aligned}F &= \frac{G \cdot m \cdot M}{r^{2}} \\ &\approx \frac{1}{2.56\times 10^{7}\; \rm m} \\ &\quad \times 6.67 \times 10^{-11}\; \rm N \cdot m^{2}\cdot kg^{-2} \\ &\quad \times 50\; \rm kg \times 5.97 \times 10^{24}\; \rm kg \\ &\approx 30\; \rm N\end{aligned}[/tex].

Since gravitational force is attractive, the [tex]50\; \rm kg[/tex] object in this question would attract the earth through the gravitational force. Thus, this force would point towards the center of this [tex]50\; \rm kg\![/tex] object.

The answer could be 2 i don’t know really

Answer:

x = [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

The opposite sides of a rectangle are congruent , then

10x - 1 = 4x + 2 ( subtract 4x from both sides )

6x - 1 = 2 ( add 1 to both sides )

6x = 3 ( divide both sides by 6 )

x = [tex]\frac{3}{6}[/tex] = [tex]\frac{1}{2}[/tex] ( = 0.5 )

Answer:

I think C has the best buy

Answer:

b

Step-by-step explanation:

Answer:

1. 6+x, 2. 8 + 7x^2 - 2x + 5x^3, 3. 16x^3+11x^2-17x-12, 4. (x-2)(x+9), 5. 2x+3)(2x-3), 6. 2x(x+2)(x+5)

Step-by-step explanation:

Number 1

1. 2-3x+5+7+4x-8

2. 7-3x+7+4x-8

3. 14-3x+4x-8

4. 14+x-8

5. 6+x

Number 2

1. 8+3x^2+x -5x^3+4x^2-3x

2. 8+7x^2+x+5x^3-3x

3. 8+7x^2-2x+5x^3

Number 3

1.(simplify) 10x^3 + 5x^2 - 20x + 6x^2 + 3x - 12

2. 16x^3+5^2-20x+6^2+3x-12

3. 16x^3+11x^2-20x+3x-12

4. 16x^3+11x^2-17x-12

Number 4

(x-2)(x+9)

Number 5

(2x+3)(2x-3)

Number 6

2x(x^2+7x+10) or 2x(x+2)(x+5)

Answer:

A 4

Step-by-step explanation:

-1/-4 = 4

Answer:

9 i think

Step-by-step explanation:

Answer:

[tex] - 7 + 3x - 2(3x + 4) = 5(2x - 3) + 4(3x - 1) - 4 \\ - 7 + 3x - 6x - 8 = 10x - 15 + 12x - 4 - 4 \\ - 3x - 15 = 22x - 15 - 8 \\ 25x = 8 \\ x = \frac{8}{25} [/tex]

Answer: y=140!!!

:)

Hope you have a good one <3

Answer:

= 3

Step-by-step explanation:

Answer:

Part A: 6250

Part B: No

Step-by-step explanation:

Part B: When Time is  2 Hours, the cost is $30.

            30x3=90 < 100

         So the unlimited weekly pass is not cheaper

                  (Find the value of y by given x)

Answer:

B

Step-by-step explanation:

With answer B, x is marked 4 on the x-axis and because there was no given y-intercept, the line must be vertical.

Answer:

No, The domains of a same number are said twice.

Step-by-step explanation:

If it is the range (y) it doesn't matter twice or not.

Answer:

The given relation is not a function.

Step-by-step explanation:

Given the relation: {(3,2) (8,16) (13,8) (14,14) (20,5) (24,8) (27,2) (31,6) (31,3)}

A relation is any set of ordered pairs, which can be thought of as (input, output).

A function is a relation in which no two ordered pairs have the same first component (x-values or input) and different second components (y-values or output).

Another way to find out whether a relation or a set of given points represent a function through the Vertical Line Test.  If a vertical line intersects the graph in all places at exactly one point, then the relation is a function.

To use the vertical-line test, imagine dragging a ruler held vertically across the  graph from left to right. If the graph is that of a function, the edge of the ruler would hit the graph only once for every x -value. If you do this for the given set of points, every vertical line intersects the graph in at most one point, except for the x-value = 31, where the vertical line contains two points (in red dots) in it:  (31,6) and (31,3).  The given graph fails the Vertical Line Test, which means that it is not a function.

Attached is a screenshot of the graph where I performed the Vertical Line Test.  

Please mark my answers as the Brainliest if you find my explanation helpful :)

Answer:

She makes 30 portions.

Step-by-step explanation:

To find, you would multiply the amount of tuna you need by the number of onions nicole used.

6/5x2 = 12/5

12/5 ÷ 2/5 = 6

6x5 = 30

She makes 30 portions.

Answer:

the Answer is 433

Step-by-step explanation:

Answer:

433

Hopefully this is right

Answer:

the length of missing side is √115(ie.10.723)

Answer:

8

Step-by-step explanation:

If you're evaluating, then substitute x=2 into the equation.

That gets you 3(2)^2-4

Then do 2^2 and multiply by 3, that should get you 12

After that, subtract 4 from 12, which gets you 8

Answer:

D. 16

Step-by-step explanation:

1. Because these are vertical angles (opposite pair of angles that are formed by intersecting lines), these are congruent. That means (8x-8) = (7x+8).

2. (Solving)

Step 1: Subtract 7x from both sides.

Step 2: Add 8 to both sides.

Step 3: Check if solution is correct.

Therefore, the answer is D. 16.

Answer:

1

Step-by-step explanation:

that's the lowest number

Answer: The equation would be L = 85H + 60

Step-by-step explanation: