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Firlakuza [10]
3 years ago
5

What is the answer to this problem and how do you solve the problem? 2x^-2 y^-3/(3a^-4)

Mathematics
1 answer:
Damm [24]3 years ago
3 0
Well first do you parentheses and the multiply all of your exponets 
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Calculate the surface area of a hockey puck with a height of 1 in. and a diameter of 3 in
uysha [10]

Answer:

23.56

Step-by-step explanation:

2(\pi r^{2}) + 2\pirh

2(\pi 1.5^{2})+ 2\pi(1.5)(1)

23.56

6 0
3 years ago
Select the correct answer from each drop-down menu.
RSB [31]

Evidence are simply facts to support a claim, while counterexamples are instances to show the contradictions in a claim

<em>The question is incomplete, as the required drop-down menus are missing. So, I will give a general explanation</em>

<em />

To show that a statement is true, you need evidence.

Take for instance:

\mathbf{if\ a^2 = 4,\ then\ a = 2}

The evidence that the above proof is true is by taking the <em>squares of both sides of </em>\mathbf{a = 2}

\mathbf{a^2 = 2^2}

\mathbf{a^2 = 4}

However, a counterexample does not need a proof per se.

What a counterexample needs is just an instance or example, to show that:

\mathbf{if\ a^2 = 4,\ then\ a \ne 2}

An instance to prove that: \mathbf{if\ a^2 = 4,\ then\ a = 2} is false is:

\mathbf{a = -2}

Hence, the complete statement could be:

<em>In a direct proof, evidence is used to support a proof . On the other hand, a counterexample is a single example that shows that a proof is false.</em>

<em />

Read more about evidence and counterexample at:

brainly.com/question/88496

5 0
2 years ago
Need help asp please I ready
Natalka [10]

Answer:

-4m-3

Step-by-step explanation:

-0.25 times 16 is the same thing as dividing 16 by -4. 16m divided by -4 is -4m

-0.25 times 12 is the same thing as dividing 12 by -4. 12 divided by -4 is -3

3 0
3 years ago
Read 2 more answers
shown. A 12 foot ladder is leaning against a house to form angle x. The distance between the house and the bottom of the ladder
Natalija [7]

Answer:

Part A

71°

Part B

The ladder is been used safely

Step-by-step explanation:

Part A

We solve the above question using Trigonometric function of Cosine

cos x = Adjacent/Hypotenuse

Adjacent = The distance between the house and the bottom of the ladder = 4 feet

Hypotenuse = Length of the ladder = 12 feet

x = Angle

Hence:

cos x = 4/12

cos x = 1/3

x = arc cos (1/3)

x = 70.528779366°

Approximately to the nearest degree

= 71°

Part B

According to the manufacturer, if the angle the ladder forms with the ground, x, is between 70° and 75°, then it meets safety standards. Is this ladder being used safely?

Angle x = 71°

Therefore, the ladder is been used safely

4 0
2 years ago
A,B, and C are collinear, and B is between A and C. The ratio of AB to BC is 1:1
Readme [11.4K]

Answer:

Therefore the coordinates of C is

C(4,9).

Step-by-step explanation:

Given:

Point A , B , and C are Collinear.

i.e A-B-C is a Straight Line

AB : BC = 1 : 1

i.e B is the Mid Point of AC.

And Point A , B and C lie on the Same Line

point A( x₁ , y₁) ≡ ( 0 ,-9)

point B( x , y) ≡ (2 , 0)

To Find:

point C( x₂ , y₂) ≡ ?

Solution:

B is the Mid Point of AC. Hence by Mid point Formula,

Mid\ point(AC)=(\dfrac{x_{1}+x_{2} }{2}, \dfrac{y_{1}+y_{2} }{2})

Substituting the values we get

B(2,0)=(\dfrac{0+x_{2} }{2}, \dfrac{-9+y_{2} }{2})

Substituting x and y value we get

2=\dfrac{0+x_{2} }{2}\\and\\0=\dfrac{-9+y_{2} }{2}

x_{2}=4\\and\\y_{2}=9

Therefore the coordinates of C is

C(4,9).

7 0
3 years ago
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