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3 years ago

3:9 and 27:81 are the ratios equivalent or not?

Mathematics

2 answers:

VashaNatasha [74]3 years ago

5 0

Yes you can also reduce it again which gives you 1:3

iren [92.7K]3 years ago

3 0

Answer:

Yes

Step-by-step explanation:

If you reduce 27:81 it will reduce to 3:9.

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There is a triangle with the height of 2 and a base of (x 1) what is the area

Marysya12 [62]

I hope this helps you

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Area =2. (x+1)/2

Area =x+1

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4 years ago

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4 years ago

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4 years ago

Simplify the rational expression. state any restrictions on the variable. n^4-11n^2+30/n^4-7n^2+10

Andrej [43]

For this case we have the following expression:
 $\frac{n ^ 4-11n ^ 2 + 30}{ n ^ 4-7n ^ 2 + 10} 

$
 We are going to make the following change of variables:
 $x = n ^ 2
$
Rewriting the expression we have:
 $\frac{(x ^ 2-11x + 30)}{(x ^ 2-7x + 10)} 

$
Factoring the expression we have:
 $\frac{(x-5) (x-6)}{(x-5) (x-6)} 
$
Canceling similar terms we have:
 $\frac{x-6}{x-2} 
$
Returning the change we have:
 $\frac{n ^ 2-6}{n ^ 2-2} 

$
 The resctrictions of the function are those that make the denominator equal to zero.
We have then:
 $n ^ 2-2 = 0

n = +/- \sqrt{2} 
$
 Answer:
The simplified expression is:
 $\frac{n ^ 2-6}{n ^ 2-2}$
The restrictions are:
 $n = \sqrt{2} 
$
$n = - \sqrt{2}$

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3 years ago

Please help!❤️ 9/4y-2=25 Please solve and show work!!

STatiana [176]

9/4y-2=25
9/4y-2+2=27+2
9/4y=27
9/4y*4y=27*4y
9=4y*27,
1/3=4y, (9/27 simpltfies to 1/3, 1/3 divided by 4: 1/3*1/4=1/12)
1/12=y

Answer:y=1/12

8 0

3 years ago

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