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mixer [17]
3 years ago
8

B. Write the following in exponential notation.then identity the base and the exponent.

Mathematics
1 answer:
Alchen [17]3 years ago
8 0

Answer:

1. 8^5, base is 8 and exponent is 5

2. (-1)^7, the base is -1 and the exponent is 7

3. -2 * a^3, the base is a and the exponent is 3

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Help this is due tomorrow please! Carter has 88 feet of fencing to enclose a dog pen in his yard. He is trying to decide whether
svet-max [94.6K]
<h3>Answer:</h3>

The circle makes the larger area

The difference in the two areas is roughly 132.2479 square feet.

=================================================

Explanation:

If Carter decides to go for a circle, then 88 is the circumference, which is the distance around the circle (aka perimeter of the circle).

Use this to find the radius needed

C = 2*pi*r

r = C/(2pi)

r = 88/(2pi)

r = 44/pi

I'll leave it in exact form rather than approximate it.

Once we know the radius, we can find the area of the circle.

A = pi*r^2

A = pi(44/pi)^2

A = pi*(1936/(pi^2))

A = 1936/pi

A = 616.247939651819 approximately

I used my calculator's stored version of pi to compute the area in the final step.

We'll be comparing this number later, so hold onto it for now.

-------------------------------------

If Carter instead decides for a square, then 88 is the perimeter since it's the amount of fencing he has to work with.

Divide it into 4 pieces to find the length of each side of the square (all sides are equal in a square)

88/4 = 22

Each side is 22 feet

The area of this square is (22)^2 = 22*22 = 484 square feet

--------------------------------------

Summary:

  • If Carter goes for a circular enclosure, then he gets roughly 616.2479 square feet.
  • The square enclosure only gets him exactly 484 square feet.

The circle wins in terms of larger area.

The difference being roughly 616.2479  - 484 = 132.2479 square feet.

3 0
3 years ago
Question 5: prove that it’s =0
mamaluj [8]

Answer:

Proof in explanation.

Step-by-step explanation:

I'm going to attempt this by squeeze theorem.

We know that \cos(\frac{2}{x}) is a variable number between -1 and 1 (inclusive).

This means that -1 \le \cos(\frac{2}{x}) \le 1.

x^4 \ge 0 for all value x. So if we multiply all sides of our inequality by this, it will not effect the direction of the inequalities.

-x^4 \le x^4 \cos(\frac{2}{x}) \le x^4

By squeeze theorem, if  -x^4 \le x^4 \cos(\frac{2}{x}) \le x^4

and \lim_{x \rightarrow 0}-x^4=\lim_{x \rightarrow 0}x^4=L, then we can also conclude that \im_{x \rightarrow} x^4\cos(\frac{2}{x})=L.

So we can actually evaluate the "if" limits pretty easily since both are continuous  and exist at x=0.

\lim_{x \rightarrow 0}x^4=0^4=0

\lim_{x \rightarrow 0}-x^4=-0^4=-0=0.

We can finally conclude that \lim_{\rightarrow 0}x^4\cos(\frac{2}{x})=0 by squeeze theorem.

Some people call this sandwich theorem.

6 0
3 years ago
I NEED HELP PLEASE IM BEGGING YOU !!!!!!!!!!!!
Sever21 [200]
Answer: 1: 30 degrees
5 0
3 years ago
THE SUM OF 2 NUMBERS IS 40. ONE NUMBER IS 36 MORE THAN THE OTHER.
melisa1 [442]
X - first number
x + 36 - second number

x + (x + 36) = 40
2x + 36 = 40    <em>|subtract 36 from both sides</em>
2x = 4  <em>    |divide both sides by 2</em>

<u /><u>x = 2</u>

x + 36 = 2 + 36 =<u> 38</u>

<em><u>Answer: 2 and 38.</u></em>
4 0
3 years ago
Increase the sum of 6 3/4 and 2 2/7 by 3 1/2. what is the result?
shusha [124]

Answer:

the answer is 12 i think thank me later explain to me if my answer is wrong

3 0
3 years ago
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