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AnnyKZ [126]
3 years ago
14

PLSSSSSSSS HEEELLLLPPPPP

Mathematics
1 answer:
kykrilka [37]3 years ago
6 0
For rhombus A:
base = 7 in
area = 35 in²

Area of rhombus = b * h
⇒ 35 = 7 * h
⇒ h = 35/7
⇒ h = 5 in

Rhombus B:
height = 3*5 = 15 in
base = 7*3 = 21 in
Area = 15 * 21 = 315 in

Area of rhombus B is 9 times area of rhombus A. When the dimensions are increased to 3 times the initial dimension, area became 9 times.






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"If a=b and b=c, then a=c" is a statement of the transitive property of equality. The same property applies to the congruence relation.

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Small toy cars are constructed using a scale factor of 1 in.:64 in. What is the ratio of the areas of the toy car and the actual
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I work in a warehouse, I pick 30 lines in 30 minutes. how many lines total will that be for 8 hours​
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Simplify the following rational expression
MatroZZZ [7]

Answer:

The value of k for the expression to be undefined is 9 .

Step-by-step explanation:

Given as :

The rational expression is written in the form

\dfrac{5k^{2}-50k+45}{k^{2}-18k+81}

Now, according to question

The expression to be undefined , denominator should be 0

<u>As, \frac{1}{0} is infinite ( ∞ ) term and it is undefined  , so for expression to be undefined , the denominator should be 0</u>

∴ k² - 18 k + 81 = 0

Or, k² - 9 k - 9 k + 81 = 0

Or, k ( k - 9 ) - 9 ( k - 9) = 0

Or, ( k - 9 ) ( k - 9 ) = 0

Or,  ( k - 9 ) = 0  ,   ( k - 9 ) = 0

∴  k = 9

So, The value of k = 9

Hence The value of k for the expression to be undefined is 9 . Answer

8 0
3 years ago
Solve using the quadratic formula 2x^2+8x-5=0
Ede4ka [16]

Step-by-step explanation:

Hey there!!

Given,

{x}^{2}  + 8x - 5 = 0

Comparing it with ax^2+bx+c =0 we get,

a= 1, b= 8, c= -5.

Using formula,

x =  \frac{ - b +  -  \sqrt{ {b}^{2} - 4ac } }{2a}

Keep all values,

x =   \frac{ - 8 +  -  \sqrt{ {8}^{2}  - 4 \times 1 \times ( - 5)} }{2 \times 1}

x =  \frac{ - 8 +  -   \sqrt{64 + 20}  }{2}

x =    \frac{ - 8 +  -  \sqrt{84} }{2}

x =  \frac{ - 8 +  - 2 \sqrt{21} }{2}

Taking negative,

x =   \frac{ - 8 - 2 \sqrt{21} }{2}

x =   \frac{ - 2(4 +  \sqrt{21}) }{2}

x = 4 +  \sqrt{21}

Similarly, taking positive,

x =  \frac{ - 8 + 2 \sqrt{21} }{2}

x =  \frac{ - 2(4 -  \sqrt{21} ) }{2}

x = 4 -  \sqrt{21}

Therefore, x= (4 + root 21, 4 - root 21).

<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

3 0
3 years ago
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