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damaskus [11]
3 years ago
13

Evaluate the expression (- n) ^ (n + n) + n ^ (n - n) , when n = 2

Mathematics
1 answer:
sladkih [1.3K]3 years ago
5 0

Answer:

17

Step-by-step explanation:

Substitute the value of the variable and simplify.

(-(2))^{(2+2)} +2^{(2-2)}

-2x^{2+2} =2^{4} = 16

2^{2-2} =2^{0}

Anything raised to the power of 0 is one.

16 + 1 = 17

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What value of x will make this expression equal to 28.1? A) x=0 is the only value that will make the expression equal to 28.1 B)
Nikolay [14]

Answer:

Any value except -3.44 will make the equation equal to 28.1

Step-by-step explanation:

We are told to multiply the quotient of the fraction by 28.1 to make 28.1. So, it is obvious that the fraction has to simplified to a one. This is possible with any number as whatever the value of x, the numerator and denominator will be equal. But, in the case of -3.44, it will make 5e fraction 0/0, which is undefined and never equal to 1.

I hope this helps

5 0
3 years ago
An engineer is trying to design a runway for an airport. He knows that airplanes have the ability to accelerate at 3.3 m/s ^ 2 a
chubhunter [2.5K]

Answer:

The proposed 1600 meters runway length is not long enough

Step-by-step explanation:

The given parameters are;

The amount by which a plane can accelerate = 3.3 m/s²

The time it takes for a plane to lift off the ground = 35 seconds

The length of the runway on the blueprint = 1,600 meters

Therefore, from the equation of motion for distance traveled, s, acceleration, a, and time taken, t, we have;

s = u·t + 1/2·a·t²

Where;

u = The initial velocity

t = 35 seconds

a = 3.3 m/s²

Given that all planes will start motion from rest, we have;

u = 0 m/s

Therefore;

s = 0 × 35 + 1/2 × 3.3 × 35² = 2021.25 meters

Which indicates that the length of the runway a plane would need for take off should be at least 2021.25 meters long, therefore, the blueprint's 1600 meters runway length is not long enough.

7 0
3 years ago
What number is 25℅ of 60
9966 [12]
50% is 30, it’s half of 60. 25% is the same as dividing by 4, 60/4 is 15.
7 0
2 years ago
The answer and the step by step explanation pleasee
alexira [117]

Answer:

C

Step-by-step explanation:

Given

V = lwh ( isolate w by dividing both sides by lh )

\frac{V}{lh} = w → C

6 0
3 years ago
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weeeeeb [17]

Answer:

the top left

Step-by-step explanation:

7 0
3 years ago
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