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3 years ago

Which equations are equal to this equation Select all that apply. 1/4(8x+56)=20

Mathematics

1 answer:

Zanzabum3 years ago

4 0

A and d are the answers

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Find the area under the standard normal curve between z=0.45 and z=1.13

Law Incorporation [45]

Step-by-step explanation:

the answer is in the above image

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3 years ago

4. Sam Howard's bank charges a $1.23

Mamont248 [21]

The answer is D I know that because I do this all the time

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3 years ago

Use cross products to demonstrate whether the two ratios are equivalent in this problem: 4 over 6 times 14 over 21

ExtremeBDS [4]

4/6 = 14/21 When using cross product always multiply the left fractions numerator times the right side fractions denominator and the left side fractions denominator times the right side fractions numerator 4×21 = 6×14 84=84 They are equivalent because they both equal 84

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3 years ago

Help with num 9 please. thanks

Alik [6]

Answer:

See Below.

Step-by-step explanation:

We want to show that the function:

$f(x) = e^x - e^{-x}$

Increases for all values of <em>x</em>.

A function is increasing whenever its derivative is positive.

So, find the derivative of our function:

$\displaystyle f'(x) = \frac{d}{dx}\left[e^x - e^{-x}\right]$

Differentiate:

$\displaystyle f'(x) = e^x - (-e^{-x})$

Simplify:

$f'(x) = e^x+e^{-x}$

Since eˣ is always greater than zero and e⁻ˣ is also always greater than zero, f'(x) is always positive. Hence, the original function increases for all values of <em>x.</em>

8 0

3 years ago

Which of the ways of getting information listed below is an unblased sampling method

BigorU [14]

Answer:

hmmmm I don't know It really depends on the person who is writing it

Step-by-step explanation:

but if you really want to know most people have different ways of telling people how they got to their answer

4 0

3 years ago