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3 years ago

Please help. BRAINLIEST to best answer!!

Mathematics

2 answers:

svetoff [14.1K]3 years ago

8 0

Answer:

This equation has one real solution.

Step-by-step explanation:

$4x^{2} +24x+36=0\\4(x^{2} +6x+9)=0\\4(x+3)^{2}=0\\x=-3$

fenix001 [56]3 years ago

3 0

At least they got it right ^ i just want points lol

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In 2007, there were 31 laptops

abruzzese [7]

Answer:

$l=31+20(y-2007)$

where $l$ is the number of laptops, and $y$ is the year.

in 2017: $l=231$

Step-by-step explanation:

I will define the variable $x$ as the number of years that passed since 2007.

Since the school buys 20 lapts each year, after a number $x$ of years, the school will have

$20*x$ more laptops.

and thus, since the school starts with 31 laptops, the equation to model this situation is

$l=31+20*x$

where $l$ is the number of laptops.

since x is the number of years that have passed since 2007, it can be represented like this:

$x=y-2007$

where $y$ can be any year, so the equation to model the situation using the year:

$l=31+20(y-2007)$

and this way we can find the number of laptos at the end of 2017:

$y=2017$

and

$l=31+20(y-2007)$

$l=31+20(2017-2007)\\l=31+20(10)\\l=31+200\\l=231$

3 0

3 years ago

What is x/9 = 9/27 help plz

Irina18 [472]

<h3>QUESTION: </h3>

what is x/9 = 9/27 help plz

<h3>ANSWER AND SOLUTION: </h3>

SOLVING FOR X

Reduce first the fraction with 9

$\large \sf = \dfrac{x}{9} = \dfrac{ \cancel9}{ \cancel{27}}$

 $\large \sf = \dfrac{x}{9} = \dfrac{1}{3}$ 

Now simplify using cross-multiply

 $\large \sf = \dfrac{3x}{9} = 1$ 

 $\large \sf = 3x = 1 \times 9$ 

 $\large \sf = 3x = 9$ 

Lastly divide both sides

 $\large \sf = 3x \div 3 = 9 \div 3$ 

 $\large \sf = x = 9 \div 3$ 

 $\large \sf = x = 3$ 

<h3>FINAL ANSWER:</h3>

$\huge \orange{ \underline{ \boxed{ \sf{x = 3}}}}$

HOPE THIS HELP YOU! HAVE A NICE DAY!

~kimtaetae92~

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3 years ago

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yanalaym [24]

Equations of straight lines are in the form y = mx + c (m and c are numbers). m is the gradient of the line and c is the y-intercept (where the graph crosses the y-axis).

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3 years ago

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Lerok [7]

Answer:

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2 years ago

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Answer:

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times -8 on both sides

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