What type of charge does a proton in an atom hold

1 answer:

5 0

Proton—positive; electron—negative; neutron—no charge. The charge on the proton and electron are exactly the same size but opposite. The same number of protons and electrons exactly cancel one another in a neutral atom.

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please help! functions and relations. f(x)= square root of x-4. find the inverse of f(x) and it’s domain.

likoan [24]

ANSWER:

$\:D.\text{ }f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge-4$

STEP-BY-STEP EXPLANATION:

We have the following equation:

$f(x)=\sqrt{x}-4$

The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

$\begin{gathered} x=\sqrt{f^{-1}(x)}-4 \\ \\ \sqrt{f^{-1}(x)}=x+4 \\ \\ f^{-1}(x)=(x+4)^2 \end{gathered}$

The domain would be the range of the original equation, and it would be the range of values that f(x) could take, which was from -4 to positive infinity, that is, f(x) ≥ -4.

Therefore, the domain is x ≥ -4.

So the correct answer is D.

$\:f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge -4$

4 0

1 year ago

How many ways can the numbers 1-100 be arranged

ra1l [238]

Answer: 5 times

Step-by-step explanation:

6 0

3 years ago

John bought a new home in 2002. The value of the home increases 4% each year. If the price of the house is $375,000 in 2020, how

skad [1K]

Using the formula of P(1 + r)^n = x where p represents the initial value, r represents the rate and n represents the number of years and x is our final output. We want to find P so we have to make it the subject of the equation.

1 + 0.04 = 1.04
1.04^18 = 2.025816515
Then divide the total amount by this to get 185,110.5454
Therefore the answer is $185,110.55

Hope this helps! :)

4 0

3 years ago

Divide. −1/9÷3/4 −4/27 −1/12 1/12 4/27 PLZZZZ HELP FAST!

ivanzaharov [21]

$\frac{ - 1}{9} \div \frac{3}{4} \\ \\ \frac{ - 1}{9} \times \frac{4}{3} \\ \\ \frac{( - 1) \times 4}{9 \times 3} \\ \\ \frac{ - 4}{27}$