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DaniilM [7]
3 years ago
12

Which shows a difference of squares?

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
6 0

Answer:

The equations shows a difference of squares are:

<u>10y²- 4x²</u>   $   <u>6y²- x²</u>

Step-by-step explanation:

the difference of two squares is a squared number subtracted from another squared number, it has the general from Ax² - By²

We will check the options to find which shows a difference of squares.

1) 10y²- 4x²

The expression is similar to the general form, so the equation represents a difference of squares.

It can be factored as (√10 y + 2x )( √10 y - 2x)

2) 6y²- x²

The expression is similar to the general form, so the equation represents a difference of squares.

It can be factored as (√6y + x )( √6y - x)

3) 8x²−40x+25

The expression is not similar to the general form, so the equation does not represent a difference of squares.

4) 64x²-48x+9

The expression is not similar to the general form, so the equation does not represent a difference of squares.

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Find the critical value zα/2 that corresponds to a 98% confidence level.
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A critical value is the point on the scale of the test statistic (z test in this case) outside which we reject the null hypothesis, and is taken from the level of significance of the test. The critical values can be obtained from the standard distribution tables for z and for this case, it is equivalent to:

critical value zα/2 at 98% confidence level = 2.326

Answer: 2.326

<span> </span>

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3 years ago
the value of y varies directly proportional to the value of x. When x = 50, the value of y= 2500. What is the value of y, when x
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Answer:

The required value of y is 4800

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3 years ago
Use the substitution method to solve the system of equations 5x-2y=9 3x+4y=-5
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(1,-2)

Step-by-step explanation:

x= 1

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2 years ago
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Svetllana [295]
I wish I could help but but I can't I'm dumb as a box of rocks
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3 years ago
Read 2 more answers
elie is now 4 times as old as her son. in 5 years time shes going to be 3 times as old as her son. how old is ellies son now?
tigry1 [53]

Answer:

Her son is 10 years old.

Step-by-step explanation:

Let son be x

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3 years ago
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