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3 years ago

What is the product 2x(x-4)

Mathematics

2 answers:

Vera_Pavlovna [14]3 years ago

7 0

Answer:

$2x^2-8x$

Step-by-step explanation:

The given expression is

$2x(x-4)$

We need to find the product of $2x(x-4)$ .

According to the distributive property, if a, b and c are three real numbers then

$a(b+c)=ab+ac$

Using distributive property the given expression can be written as

$2x(x)+2x(-4)$

$2x^2-8x$

Therefore, the product of 2x(x-4) is $2x^2-8x$ .

stealth61 [152]3 years ago

4 0

The answer is 2x^2-8x

^2 means to the power.

Hope this helps!! ;))
Have a grat day!! <3

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A bicycle shop is selling $500.00 bikes at 10% off. if the sales tax is 7% how much will the bike cost?

Vladimir [108]

The bike will cost $481.50
because
10% off of 500 is 50
so 500 - 50 = 450
Now include the sales tax which is
450 * 0.07 = 31.5
Now add the two totals to get
$481.50

4 0

3 years ago

Assume that the national credit card interest rate is 12.83 percent. A study of 62 college students finds that their average int

meriva

Answer:

b) 95 percent confidence interval for this single-sample t test

[11.64, 16.36]

Step-by-step explanation:

Explanation:-

Given data a study of 62 college students finds that their average interest rate is 14 percent with a standard deviation of 9.3 percent.

Sample size 'n' =62

sample mean x⁻ = 14

sample standard deviation 'S' = 9.3

95 percent confidence interval for this single-sample t test

The values are $(x^{-} - t_{0.05} \frac{S}{\sqrt{n} } ,x^{-}+t_{0.05}\frac{S}{\sqrt{n} })$ the 95 percent confidence interval for the population mean 'μ'

Degrees of freedom γ=n-1=62-1=61

t₀.₀₅ = 1.9996 at 61 degrees of freedom

$(14 - 1.9996\frac{9.3}{\sqrt{62} } ,14+1.9996\frac{9.3}{\sqrt{62} })$

(14-2.361 , 14 + 2.361)

[(11.64 , 16.36]

Conclusion:-

95 percent confidence interval for this single-sample t test

[11.64, 16.36]

6 0

3 years ago

Please help me asap impor

jeka57 [31]

I’m not sure sorry ☹️

5 0

3 years ago

2. Determine the volume of the figure. Round your answer to the nearest tenth of a cubic foot. three feet, ten feet, four feet,

guajiro [1.7K]

Volume=Length x Width x Height
It doesn't matter which one you multiply first; you will get the same answer.
The equation is 3 x 10 x 4
3 x 10 = 30
30 x 4 = 120
Make sure it's written as 120 feet^{3} [/tex].

3 0

3 years ago

HD Straight line graphs

Taya2010 [7]

Answer:

The equation of the sraight line 3x- y+ 6 =0

Step-by-step explanation:

Explanation:-

Given that the gradient of the function

|gradf| = 3 and point (-1,3)

Given that the slope of the line

m = 3

The equation of the straight line passing through the point(-1,3) and slope m =3

$y -y_{1} = m(x-x_{1} )$

y-3 = 3(x-(-1))

y-3 = 3x+3

3x +3-y+3=0

3x- y+ 6 =0

Final answer:-

The equation of the sraight line 3x- y+ 6 =0

5 0

3 years ago