2 years ago

Solve x + 2∕5 = 1∕3 for x.

Mathematics

2 answers:

Naya [18.7K]2 years ago

8 0

Answer:

2.2360679775

I hope this helps

miv72 [106K]2 years ago

6 0

The answer: 11/15 or .7333333……

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How do you solve: f(x) = -x2e-x<br> +2xe-x , finding the zero's of f.

Maksim231197 [3]

Answer:

0 and 2

Step-by-step explanation:

$f(x) = -x^2e^{-x}+2xe^{-x}$

To find zeros set f(x)=0 and solve for x

$0 = -x^2e^{-x}+2xe^{-x}$

$0 = -e^{-x}(x^2-2x)$

now factor out x

$0 = -xe^{-x}(x-2)$

set each factor =0 and solve for x

$x=0$

$-e^{-x}=0$ no solution for x

$x-2=0, x=2$

zeros of f are 0 and 2

7 0

3 years ago

Please need help thank you

valentinak56 [21]

Might be 1? Because it is 100 each

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3 years ago

Show how to rewrite 1/5 with the denominator 10.

Gnoma [55]

Answer:

first blank: 2

second blank: 2

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2 years ago

Find all zeros of function and write the polynomial as a product of linear factorsX^3-x^2+9x-9

mart [117]

Answer:

$\large\boxed{x=1\ \vee\ x=-3i\ \vee\ x=3i}$

Step-by-step explanation:

$\text{The zeros:}\\\\x^3-x^2+9x-9=0\\\\x^2(x-1)+9(x-1)=0\\\\(x-1)(x^2+9)=0\iff x-1=0\ \vee\ x^2+9=0\\\\x-1=0\qquad\text{add 1 to both sides}\\x-1+1=0+1\\\boxed{x=1}\\\\x^2+9=0\qquad\text{subtract 9 from both sides}\\x^2=-9$

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3 years ago

When given an algebraic expression involving subtraction, why is it best to rewrite the expression using addition before identif

Ray Of Light [21]

Usually when you do expressions involving subtraction you can do Keep, Change ,Change
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It is best you rewrite the expression to addition because a lot of people don't do well with subtracting .

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2 years ago