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jasenka [17]
3 years ago
12

Help plsss ! 10 points !

Mathematics
1 answer:
dybincka [34]3 years ago
3 0

Answer:

They are The Same if you note 1 square = 1 square cm,They all are 10square cm

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I neeed help again fast plss
podryga [215]

Answer:

i think the answer is 7.9373

Step-by-step explanation:

so its the Herons Formula (when you know all 3 sides) so the formula would be

Area =  √  p  ( p − a )  ( p − b )  ( p − c )    

p is half the perimeter

 

or,

a + b + c

-----------------------------

               2

 

4 0
4 years ago
Read 2 more answers
rectangle has dimensions 12 litre into 6 CM if you draw a square on the same perimeter what will be its area​
Ber [7]

Answer:

Area = 81cm^2

Step-by-step explanation:

Given

Length = 12

Width = 6cm

Required

Determine the area of a square with the same perimeter

First, calculate the perimeter (P) of the rectangle.

P=2*(Length + Width)

P=2*(12 + 6)

P=2*18

P=36

The perimeter of a square is:

P = 4L

Where L is the side length.

Substitute 36 for P

36 = 4L

Make L the subject

L =\frac{36}{4}

L =9

The area of the square is:

Area = L^2

Area = 9^2

Area = 81cm^2

3 0
3 years ago
-12/8+(-0.75)=? <br><br> And <br><br> 4.3+ (-5/3)=?
stiks02 [169]

-12/8+(-0.75)=2.25

and

4.3+ (-5/3)=2.6333333

4 0
3 years ago
How do you find the limit of # (3 x^4 + 4) / ((x^2 - 7)(4 x^2 - 1)) # as x approaches infinity?
KengaRu [80]
\displaystyle\lim_{x\to\infty}\frac{3x^4+4}{(x^2-7)(4x^2-1)}

Expanding the denominator gives


(x^2-7)(4x^2-1)=4x^4-29x^2+7

Then in the whole rational expression, we can divide through by x^4. Since x\to\infty, we assume that x>0, so this is legal.

\dfrac{3x^4+4}{4x^4-29x^2+7}=\dfrac{3+\frac4{x^4}}{4-\dfrac{29}{x^2}+\dfrac7{x^4}}

As x gets arbitrarily large, the rational terms in the numerator and denominator become negligible. So for large x, we have

\dfrac{3x^4+4}{(x^2-7)(4x^2-1)}\approx\dfrac34

And so the limit is \dfrac34.
5 0
3 years ago
A 90% confidence interval for u using the sample results X = 131.2, s=55 , and n= 50 Round your answer for the point estimate to
Ilya [14]

Answer:

131.2 ;

12.8 ;

(118.4, 144)

Step-by-step explanation:

Given :

X = 131.2, s=55 , and n= 50

Point estimate of the mean :

Since, sample size is large (n > 30) ; the sample mean = population mean according to the center limit theorem :

Margin of Error = Zcritical * s / sqrt(n)

Zcritical at 90% = 1.645

Margin of Error : 1.645 * (55 / sqrt(50))

Margin of Error : 1.645 * 7.7781745

Margin of Error = 12.795097

Margin of Error = 12.8

The confidence interval (C.I) :

C.I = x ± margin of error

C. I = 131.2 ± 12.8

(131.2 - 12.8) ; (131.2 + 12.8)

(118.4, 144)

8 0
3 years ago
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