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3 years ago

If ~ p: 2 + 2 =4

Mathematics

2 answers:

Art [367]3 years ago

6 0

Answer:

A. $\displaystyle 2 \times 2 = 4$

Step-by-step explanation:

I could not make clarifications of what you are asking, but this is similar to $\displaystyle 2 + 2 = 4.$

I am joyous to assist you anytime.

vodka [1.7K]3 years ago

5 0

Answer:

Step-by-step explanation:

Just did the problem and got it right

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How to solve this? Is the question correct? ty :)

bezimeni [28]

Answer:

The proposition is true.

Step-by-step explanation:

Now we proceed to demostrate that expression given is true by algebraic means:

1) $\frac{x^{-1}+y^{-1}}{x^{-1}}+\frac{x^{-1}-y^{-1} }{y^{-1}}$ Given

2) $\frac{y^{-1}\cdot (x^{-1}+y^{-1})+x^{-1}\cdot (x^{-1}-y^{-1})}{x^{-1}\cdot y^{-1}}$ $\frac{a}{b} + \frac{c}{d} = \frac{a\cdot d+b\cdot c}{b\cdot d}$

3) $\frac{x^{-1}\cdot y^{-1}+y^{-2}+x^{-2}-x^{-1}\cdot y^{-1}}{x^{-1}\cdot y^{-1}}$ Distributive property/ $a^{b}\cdot a^{c} = a^{b+c}$

4) $\frac{x^{-2}+y^{-2}}{(x\cdot y)^{-1}}$ Commutative, associative and modulative properties/Existence of additive inverse/ $a^{b}\cdot c^{b} = (a\cdot c)^{b}$

5) $[(x\cdot y)^{-1}]^{-1}\cdot (x^{-2}+y^{-2})$ Commutative property/Definition of division

6) $(x\cdot y)\cdot (x^{-2}+y^{-2})$ $(x^{-1})^{-1}$

7) $x^{-1}\cdot y + x\cdot y^{-1}$ Distributive property/Associative property/ $a^{b}\cdot a^{c} = a^{b+c}$

8) $(x^{-1}\cdot y^{-1})\cdot y^{2} + (x^{-1}\cdot y^{-1})\cdot x^{2}$ Modulative property/Existence of additive inverse/ $a^{b}\cdot a^{c} = a^{b+c}$

9) $(x^{-1}\cdot y^{-1})\cdot (x^{2}+y^{2})$ Distributive property

10) $(x\cdot y)^{-1}\cdot (x^{2}+y^{2})$ $a^{b}\cdot c^{b} = (a\cdot c)^{b}$

11) $\frac{x^{2}+y^{2}}{x\cdot y}$ Commutative property/Definition of division/Result

4 0

3 years ago

Tina has a pet sitting business. She charges a flat service fee of $30, plus $15 per day for each animal. If one of her customer

Setler [38]

I think it’s A hope it’s right

5 0

3 years ago

Read 2 more answers

For every 10,000 gallons of pool water, there needs to be 1 gallon of liquid chlorine. Steve has a 55,000 gallon pool. How much

Rudik [331]

Answer:

5.5 Gallons

Step-by-step explanation:

6 0

3 years ago

GUYS HELP please i dont know what to answer

grandymaker [24]

Answer:

2nd one : y = -4/x

3rd one : y + x/2 = 9

4th one

5th one : y = x^2

6th : 5.8x - y = 2.3

Step-by-step explanation:

Not sure about these. You might want to wait for another person to answer

Have a nice day!

7 0

3 years ago

A carnival ride is in the shape of a wheel with a radius of 25 feet. The wheel has 20 cars attached to the center of the wheel.

Ad libitum [116K]

<h3>Answers:</h3>

Central angle = 18 degrees
Arc length = 7.85 feet approximately
Area of sector = 98.17 square feet approximately

All of these answers apply to just between two adjacent or neighboring cars. For the last two answers, I used the calculator's stored value of pi instead of something like pi = 3.14

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

Explanation:

A full circle is 360 degrees. Divide this into 20 equal pieces to get 360/20 = 18. Each little pie slice is 18 degrees. This is the central angle between any two adjacent or neighboring cars.

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

The circumference of the ferris wheel is 2*pi*r = 2*pi*25 = 50pi feet exactly. This is the total distance around the circle. We only want a small portion of that. Namely, we want the curved distance from one car to its neighbor. Go for the shortest distance possible.

The formula we'll use is

L = (x/360)*2*pi*r

note how 2*pi*r is the circumference of the circle, so we're taking a fractional portion (x/360) of this full circle perimeter to get the arc length L. The value of x is the central angle.

So,

L = (x/360)*2*pi*r

L = (18/360)*2*pi*25

L = (1/20)*50pi

L = (50/20)pi

L = 2.5pi

L = 7.85398163397449 feet

L = 7.85 feet approximately

I used my calculators stored version of pi, as opposed to something like pi = 3.14

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

The last part of this problem is finding the area of the sector between two neighboring cars. The full circle has area of pi*r^2 = pi*25^2 = 625pi square feet exactly.

We'll take a fraction of this, specifically 1/20 th of the area, to get the pie slice area we want

area of sector = (1/20)*(area of circle)

area of sector = (1/20)*625pi

area of sector = 31.25pi

area of sector = 98.174770424681 approximately

area of sector = 98.17 square feet approximately

7 0

4 years ago

Read 2 more answers