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3 years ago

Use the properties of operations to write an expression equivalent to: 4x + 1/2 + 2x - 3

Mathematics

2 answers:

Amanda [17]3 years ago

5 0

6x* 1/2-3 (means multiply)

NikAS [45]3 years ago

4 0

Answer:

6x * 1/2 - 3 (* means multiplying)

Step-by-step explanation:

In this problem, you are using communitive property and so you are just changing the problem to an equal situation.

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sue charges a flat rate of $5 to plant flowers, and an additional $2 per hour, h, for each hour she works. This is best represen

zloy xaker [14]

5+2h i think this is how it would be represented

3 0

3 years ago

Tritium is a radioactive isotope of hydrogen that decays by about 5% per year. A large bottle of water that contained 450,000 tr

Basile [38]

Using an exponential function, it is found that the bottle contains 255,960 atoms of tritium after 11 years.

<h3>What is an exponential function?</h3>

A decaying exponential function is modeled by:

$A(t) = A(0)(1 - r)^t$

In which:

A(0) is the initial value.

r is the decay rate, as a decimal.

In this problem:

The bottle initially contained 450,000 tritium atoms, hence A(0) = 450000.

The amount decays by about 5% per year, hence r = 0.05.

Thus, the equation is given by:

$A(t) = A(0)(1 - r)^t$

$A(t) = 450000(1 - 0.05)^t$

$A(t) = 450000(0.95)^t$

After 11 years, the amount is given by:

$A(11) = 450000(0.95)^{11} = 255960$

The bottle contains 255,960 atoms of tritium after 11 years.

More can be learned about exponential functions at brainly.com/question/25537936

8 0

2 years ago

What’s the slope intercept from of the equation of the line which passes through (3,4) and has a slope 1/3

Snowcat [4.5K]

$\bf (\stackrel{x_1}{3}~,~\stackrel{y_1}{4})~\hspace{10em} slope = m\implies \cfrac{1}{3} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-4=\cfrac{1}{3}(x-3) \\\\\\ y-4=\cfrac{1}{3}x-1\implies y=\cfrac{1}{3}x+3$

3 0

3 years ago

6.2 + 0.4x = 8.05 as a decimal . do not round

KengaRu [80]

$\: \: \: \:$

$\pink{x = 4.625} \\ \\ or \: in \: alternate \: \: form \\ \\ \pink{x = \frac{37}{8} }$

Step-by-step explanation:

$6.2 + 0.4x = 8.05$

move the constant to the right

$0.4x = 8.05 - 6.2$

calculate

$0.4x = 1.85$

divide both sides

$\pink{x = 4.625} \\ \\ in \: \: alternate \: \: form \\ \\ \pink{x = \frac{37}{8} }$

<h2>hope it helps</h2>

4 0

2 years ago

Read 2 more answers

Simplify: [6 * (4 - 2) + 6] / 3^2

deff fn [24]

First do inside the innermost parentheses and exponents. [6 * 2 + 6] / 9
Then do multiplication inside the parentheses [12 + 6] / 9
Then do addition inside parentheses 18 / 9
Divide to get the answer, which is 2

7 0

3 years ago