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3 years ago

Expand & simplify: (x - 1 )(x - 1)

Mathematics

2 answers:

andrey2020 [161]3 years ago

5 0

Answer:

x^2 -2x+1

Step-by-step explanation:

(x - 1 )(x - 1)

FOIL

first: x*x = x^2

Outer: -1x

inner: -1x

Last: -1*-1 = 1

Add these together

x^2 -1x-1x+1

x^2 -2x+1

bearhunter [10]3 years ago

5 0

Answer:

x² - 2x +1

Step-by-step explanation:

(x - 1) (x - 1)

x(x - 1) - 1(x - 1)

x² - x - x + 1

x² -2x + 1

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Suppose I collected a sample and calculated the sample proportion. If I construct a 90% confidence interval for the population p

Daniel [21]

Answer:

Step-by-step explanation:

If you construct a 90% confidence interval for the population proportion and a 95% confidence interval for the population proportion, the 95% confidence will have a wider interval. This is because a higher confidence interval will provide more possible values from which the true value will be determined. Therefore, If you want more confidence that an interval contains the true parameter, then the intervals will be wider.

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3 years ago

Please Help:

scoundrel [369]

If we multiply and then divide the number by the same thing,
we won't change its value.

Take the number: 58,000,000,000

Divide it by 10¹⁰ : 5.8

Multiply it by 10¹⁰ : 5.8 x 10¹⁰

They want a single digit, so we'll round the 5.8
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3 years ago

Given the function f(x) = -0.5|2x + 2| + 1, for what<br> values of x is f(x) = 6?

Licemer1 [7]

Answer:

<em>No values of x can make f(x)=6</em>

Step-by-step explanation:

Equation with Absolute Value

The absolute value of a number is always positive. That condition must be met when solving equations. Any condition that goes against the rule, must be discarded and not part of the solution.

The function provided in the question is:

$f(x) = -0.5|2x + 2| + 1$

We need to find the value(s) of x that make:

f(x)=6

It needs to solve the equation:

$-0.5|2x + 2| + 1=6$

Subtracting 1:

$-0.5|2x + 2| =6-1=5$

Dividing by -0.5:

$|2x + 2| =5/(-0.5)=-10$

We reach to this equation to solve:

$|2x + 2| =-10$

As stated above, the absolute value is always positive, and the equation forces the absolute value to be negative. There is no possible value of x that makes the absolute value negative, thus:

No values of x can make f(x)=6

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3 years ago

The number line represents values for x. Which inequality BEST describes the included values? A) x < −4 B) x > −4 C) x ≤ −

NeX [460]

Answer:

x ≥ −4

The line is shaded to the right of −4 where the values are greater. The closed circle indicates that −4 is include

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2 years ago

Read 2 more answers

The side lengths of a triangle are given by the expressions 5x+3,5x+5,and3x-2.write and simplify a linear expression for the per

serg [7]

The perimeter of the triangle is: 13x+6

Step-by-step explanation:

The perimeter is the length of the outer boundary of any closed geometrical shape.

So,

Given

$Side\ 1 = s_1 = 5x+3\\Side\ 2 = s_2 = 5x+5\\Side\ 3 = s_3 = 3x-2$

The perimeter will be:

$P = s_1+s_2+s_3\\= (5x+3)+(5x+5)+(3x-2)\\=5x+5x+3x+3+5-2\\=13x+6$

The perimeter of the triangle is: 13x+6

Keywords: Perimeter, geometry

Learn more about perimeter at:

#LearnwithBrainly

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3 years ago