2 years ago

Can someone help me:(

Mathematics

2 answers:

Luba_88 [7]2 years ago

5 0

It’s 4000 and 1200 + 1200

Lelechka [254]2 years ago

3 0

So sorry idek algebra 1

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F(x) = 5x3 - 5x2 – 3x + 4; f(-3)

nirvana33 [79]

Answer:

$1725x4-3x+4-3x+4-3$

Step-by-step explanation:

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2 years ago

The perimeter of a rectangle is 234 cm. If the width is 51 cm,what is the length?

Reil [10]

The length will be 66 cm

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2 years ago

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I need help by tomorrow I need to know the answer but right now would be helpful

Ad libitum [116K]

The answer is 12 letter C

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Define a function f on a set of real numbers as follows: f(x) = 3x − 1 x , for each real number x ≠ 0 Prove that f is one-to-one

dalvyx [7]

Answer with Step-by-step explanation:

We are given that

$f(x)=\frac{3x-1}{x}$

For each real number $x\neq 0$

To prove that f is one -to-one.

Proof:Let $x_1$ and $x_2$ be any nonzero real numbers such that

$f(x_1)=f(x_2)$

By using the definition of f to rewrite the left hand side of this equation

$f(x_1)=\frac{3x_1-1}{x_1}$

Then, by using the definition of f to rewrite the right hand side of this equation of $f(x_1)=f(x_2)$

$f(x_2)=\frac{3x_2-1}{x_2}$

Equating the expression then we get

$\frac{3x_1-1}{x_1}=\frac{3x_2-1}{x_2}$

$3x_1x_2-x_2=3x_2x_1-x_1$

$3x_1x_2-3x_1x_2+x_1=x_2$

$x_1=x_2$

Therefore, f is one-to-one.

6 0

2 years ago

Convert to scientific notation: 0.0509.

fomenos

Answer:

5.09 × 10^-2

Step-by-step explanation:

You have to take the number go to the decimal and move it until you get to the first number and in this case, it is 5 put the decimal there. To write it you have to count the number of times you moved the decimal. when doing this it will always be a number times 10^ the number you moved the decimal.

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2 years ago