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aleksklad [387]
3 years ago
10

Which expression can be used to calculate the rate per second at which the machine launches the balls? (4,20) (8,40) (12,60) (16

,80)
Mathematics
2 answers:
masya89 [10]3 years ago
8 0
5 because 20 divided by 4 is 5, 40 divided by 8 is 5, 60 divided by 12 is 5 and 80 divided by 5 is 16.
larisa86 [58]3 years ago
4 0
Hello.

The expression can be found by using the slope formula. 

The expression used to calculate the rate per second at which the machine launches the ball is 40x. 
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A regular pentagon has an apothem measuring 20 cm and a perimeter of 145. 3 cm. A rectangular pentagon has an apothem measuring
Effectus [21]

The area of the pentagon is 1,453 squared centimeters.

Given information-

The length of the apothem of a regular pentagon is 20 cm.

The measure of the perimeter of a regular pentagon is 145.3 cm.

The length of the apothem of a rectangular pentagon is 20 cm.

The measure of the perimeter of a rectangular pentagon is 145.3 cm.

<h3>Pentagon-</h3>

Pentagon is the closed shaped polygon which has 5 sides. When these 5 sides are equal in length then the pentagon is called teh regular pentagon. When four of the sides of pentagon make a rectangle then the pentagon is called the rectangular pentagon.

<h3>Area of regular pentagon-</h3>

Area of regular pentagon is half of the product of its apothem and perimeter. It can be given as,

A=\dfrac{1}{2} \times 20\times 145.3\\A=1453

Thus the area of the pentagon is 1,453 squared centimeters.

Learn more about the regular pentagon here;

brainly.com/question/858867

4 0
3 years ago
Jake and vinny are at a pizzeria .They both order a whole pizza and eat part of it.jake has 2/4 of his pizza left and vinnny has
Sedaia [141]
3/5 = 12/20
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4 0
3 years ago
Figure ABCD is a parallelogram.
Aleonysh [2.5K]

Answer:

13.

Step-by-step explanation:

3 0
4 years ago
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For an integer x,x squared minus x will always produce an even value
yuradex [85]

Answer:

Step-by-step explanation:

Not exactly sure what your question is - I am assuming that it is something like:

Show/prove that for any integer x, x^2 - x is even.

Suppose that x is an even integer.  The product of an even integer and any other integer is always even (x = 2n, so x * y = 2 n * y which is even.  Therefore x^2 is even.  An even minus an even is even.  (The definition of an even number is that it is divisible by 2 or has a factor of 2.  So the difference of even numbers could be written as 2*( the difference of the two numbers divided by 2); therefore the difference is even)

Suppose that x is an odd integer.  The product of 2 odd numbers is odd - each odd number can be written as the sum of an even number and 1; multiplying the even parts with each other and 1 will produce even; multiplying the 1's will produce 1, so the product can be written as the sum of an even number and 1 - which is an odd number.  The difference between two odd numbers is even - the difference between the even parts is even (argument above), the difference between 1 and 1 is zero, so the result of the difference is even.

x^2 is therefore even if x is even and odd if x is odd; The difference x^2 - x is even by the arguments above.

5 0
3 years ago
Why do we simplify expressions?
grigory [225]

Answer:

Both versions of the expression equal the exact same amount;one is just much shorter.Simplifying algebraic expressions is the same idea,except you have variables in your expression.So,Basically you're turning a long expression into something you can easily make sense of

8 0
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