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Ad libitum [116K]
3 years ago
6

If y = 2x + 1 and x = 4, then y =

Mathematics
2 answers:
Alexeev081 [22]3 years ago
6 0

Answer:

9

Step-by-step explanation:

First, plug-in 4 for x to get the equation y = 2(4) + 1

Then using PEMDAS we multiply 2 and 4 to get 8 and then add the one to make y = 9

Ludmilka [50]3 years ago
4 0
Y = 2•4 + 1
y= 8+1
y= 9
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Reduce this algebraic fraction (x-y/x^2-1)(x-1/x^2-y^2)
Whitepunk [10]

Answer:

(\frac{1}{(x+1)(x+y)})

Step-by-step explanation:

The given algebraic fraction is;

(\frac{x-y}{x^2-1})(\frac{x-1}{x^2-y^2} )

We factor using difference of two squares.

(\frac{x-y}{x^2-1^2})(\frac{x-1}{x^2-y^2} )

(\frac{x-y}{(x+1)(x-1)})(\frac{x-1}{(x-y)(x+y)} )

Cancel out the common factors;

(\frac{1}{(x+1)(1)})(\frac{1}{(1)(x+y)} )

Simplify;

(\frac{1}{(x+1)(x+y)})

7 0
4 years ago
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In a bag, there are 5 cards numbered 1 to 5. Each time a card is randomly selected, it I'd replaced in the bag. What is the prob
sweet [91]

Out of 5 cards in the bag ...

-- There are 2 even numbers . . . 2 and 4 .

-- There are 3 odd numbers . . . 1, 3, and 5 .

So EITHER time, the probability of pulling an even number is  2/5 ,
and the probability of pulling an odd number is  3/5 .

The probability of pulling an even number the first time
AND an odd number the second time is

       (2/5) x (3/5)  =  6/25  =  <em>24%</em> .

 
3 0
3 years ago
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K + L + M equals L + M + K what property does this demonstrate
lutik1710 [3]
This demonstrates the commutative property because the commutative property is a property where you can switch up the numbers all you want and still get the same answer. This only works with addition and multiplication.
6 0
4 years ago
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Consider that point A is reflected across the y-axis. What is the distance between point A and the point of its reflection?
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Answer:

C

Step-by-step explanation:

Under a reflection in the y- axis

a point (x, y ) → (- x, y ), thus

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Since the point A and it's reflection lie on a horizontal line then

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7 0
3 years ago
The owner of a coffee shop chain creates a graph representing sales in thousands of dollars. She describes the characteristics
Ymorist [56]

Answer:

This is a curve linear would show the turning points clearly.

With bar graph we can also show changes but not turnng points a sthe description shows.

Step-by-step explanation:

In the context of curve fitting, a linear curve is a curve that has a linear dependence on the curve parameters. Examples of linear curves are: lines, polynomials, so where they increase the points can also show a line of fit where least amounts would stand out below the line of fit.

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4 years ago
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