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2 years ago

6x + 7 = 13 + 7x pls solve this for me

Mathematics

2 answers:

vovangra [49]2 years ago

7 0

Answer:

x = -6

Step-by-step explanation:

6x + 7 = 13 + 7x

First subtract 7 and 13

7 - 13 = 6

6x = 6 + 7x

Subtract like terms

6x - 7x = -x

-x = 6

The finally divide

-x / 6

Final product: x = -6

AURORKA [14]2 years ago

4 0

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable. x=−6

6*-6 + 7 = 13 + 7*-6

-29 = -29

Step-by-step explanation:

there is your answer for you

im sorry if wrong

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evablogger [386]

This question is all about dimensional analysis. The whole idea behind dimensional analysis is that you multiply a starting value with different conversion factors to cancel out units you don't want to tern the value into the units that you do want. The conversion for yards to feet can be written as 3 feet/yard (this is the conversion factor it can be written as 3feet/1yard or 1yard/3feet, it depends on what you are starting with). If you start out with yards and and want to go to feet you have to multiply the number of yards by 3feet/yard so that the yards cancel out leaving you with feet. If start out with feet and want to go to yards you divide the number of feet by 3feet/yard so that the feet cancel out and you are left with yards.

In your question Tom is trying to go from feet to yards. Therefore he has to divide the number of feet by 3feet/yard to get feet to cancel out. His mistake was that he multiplied by 3feet/yard instead of divide by 3feet/yard. The correct way do it is divide 379 feet by 3feet/yard to get 126.33 yards.

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3 years ago

Preform the operation (answer in a+bi form) (i meaning imaginary number).

grin007 [14]

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3 years ago

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gtnhenbr [62]

Answer:

Step-by-step explanation:

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3 years ago

The height of a tree in feet over x years is modeled by the function f(x). f(x)=301+29e−0.5x which statements are true about the

Karo-lina-s [1.5K]

Given this equation:

$f(x)=301+29^{-0.5x}$

That represents the height of a tree in feet over (x) years. Let's analyze each statement according to figure 1 that shows the graph of this equation.

The tree's maximum height is limited to 30 ft.

As shown in figure below, the tree is not limited, so this statement is false.

The tree is initially 2 ft tall

The tree was planted in x = 0, so evaluating the function for this value, we have:

 $f(0)=301+29^{-0.5(0)}=301+1=302ft$

So, the tree is initially $\boxed{302ft}$ tall.

Therefore this statement is false.

Between the 5th and 7th years, the tree grows approximately 7 ft.

if x = 5 then:

 $f(5)=301+29^{-0.5(5)}=301ft$ 

if x = 7 then:

$f(7)=301+29e^{0.5(7)}=301ft$

So, between the 5th and 7th years the height of the tree remains constant
:
$\Delta=f(7)-f(5)=301-301=0ft$

This is also a false statement.

After growing 15 ft, the tree's rate of growth decreases.

It is reasonable to think that the height of this tree finally will be 301ft. Why? well, if x grows without bound, then the term $29^{-\infty}$ approaches zero.

Therefore this statement is also false.

Conclusion: After being planted this tree won't grow.

4 0

3 years ago

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Vikentia [17]

Answer:

Step-by-step explanation:

3*5*1=15

7 0

3 years ago