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3 years ago

3x-7=3(x-3)+2 plz help

Mathematics

1 answer:

Evgen [1.6K]3 years ago

6 0

Answer:

All real numbers are solutions.

Step-by-step explanation:

3x-7=3(x-3)+2

3x-7=3x-7

subtract 7 from both sides

3x=3x

subtract 3x from both sides

0=0

All real numbers are solutions.

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How many eighty fours are in 672

Zinaida [17]

Answer

Find out how many eighty fours are in 672.

To prove

Let us assume that the number of the 84 be x .

As given in the equation

Total values given in the question be 672.

Than the equation becomes

84 × x = 672

Simplify the above equation

84x = 672

$x = \frac{672}{84}$

x = 8

Therefore the Numbers of eighty fours in 672 is 8 .

6 0

3 years ago

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The number of bacteria in a certain population increases according to a continuous exponential growth model, with a growth rate

Veronika [31]

It takes 8.35 hours for the size of the sample to double

Step-by-step explanation:

The form of the continuous exponential growth model is

$A=Pe^{rt}$ , where

A is the new value
P is the initial value
r is the rate of growth or decay in decimal
t is the time

∵ The growth rate is 8.3%

∴ r = 8.3 ÷ 100 = 0.083

∵ The size of the sample will doubled in t hours

∴ A = 2 P

Use the formula of the contentious exponential growth above

∵ $2P=Pe^{0.083t}$

- Divide both sides by P

∴ $2=e^{0.083t}$

- Insert ㏑ in both sides

∴ $ln(2)=ln(e^{0.083t})$

- Remember $ln(e^{n})=n$ because ㏑(e) = 1

∴ $ln(2)=0.083t$

- Divide both sides by 0.083

∴ $\frac{ln(2)}{0.083}=t$

∴ t = 8.35 hours to the nearest hundredth

It takes 8.35 hours for the size of the sample to double

Learn more:

You can learn more about the logarithmic function in brainly.com/question/1447265

#LearnwithBrainly

4 0

4 years ago

Is -2.9 a rational or integer or whole or natural number

Burka [1]

Answer:

Step-by-step explanation:

It might help to get artsy/crafty with this. I made it out of construction paper, but I'm going to tell you how to draw it.

Draw a large circle, over have the page. Every number, ever, even the numbers in the smaller circles, go into this circle, fractions, decimals, negatives, zero, whole numbers, every number. Negative infinity to positive infinity and everything in between. These are rational numbers.

Now draw a smaller circle inside that one. In the smaller circle there are positive and negative numbers, but no fractions. Every number in this circle is also in the larger circle, but not every number in the bigger circle in in this smaller one. Negative infinity to positive infinity, no fractions. These are integers.

Draw a smaller circle inside the smaller one. No negative numbers in this one, only positive numbers and zero. 0 to infinity, no fractions. These are whole numbers.

One more circle inside the smallest one. Only positive whole numbers in here. No zero. 1 to infinity, no fractions. These are natural numbers.

-2.9 is negative and decimal, so not a natural, not a whole, not an integer. That leaves rational.

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3 years ago

A rectangle has a length of 25x^3 and a width of 5x^2. Fkns the area.

Anna11 [10]

Answer:

Step-by-step explanation:

I hope you want the area.

Area = L * W

L = 24x^3

W = 5x^2

Area = 24x^3 * 5x^2

Area = 120 * x^(3 + 2)

Area = 120 * x^5

Note

When you multiply numbers or letters that have powers, if the base for both of them is the same, the powers are added.

The above answer is an example x^2 * x ^3 are letters (x) that are raised to the 2nd power and the 3rd power. You add the powers.

Numbers can do the same thing

2^5 * 2^3 = 2^8
2*8 = 256
2^5 = 64
2^3 = 8

64 * 8 = 256

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3 years ago

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iren [92.7K]

Answer:

<h2>Your choice :></h2>

Step-by-step explanation:

$--------------------------------------------$

<em>You should make a milk tea man :D</em>

<em>But, if you don't want to, you can do whatever you please.</em>

<em>I don't judge furries btw, because I am one. :></em>

$--------------------------------------------$

<em>Hope this helps! <3</em>

$--------------------------------------------$

7 0

3 years ago