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S_A_V [24]
3 years ago
5

Factor

y^{2}" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
irinina [24]3 years ago
8 0
Sorry for the hand writing. But you want to factor out a 4y^2 which will result in (9y^2-1). Then you will factor out the equation in parentheses to (3y-1)(3y+1). Don’t forget to put the 4y^2 out front!

Nostrana [21]3 years ago
7 0

Answer:

4(3x^2-y) (3x^2+y)

Step-by-step explanation:

See image below:)

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A right triangle has a perimeter of 24 cm and a hypotenuse of 10 cm. Find the length of the other two sides.
jekas [21]

Answer:

One of the sides is 6 cm and the other is 8 cm

Step-by-step explanation:

Let's call the unknown sides a and b. From the perimeter information (24 cm) we have:

a + b + hypotenuse = 24

a + b + 10 = 24

a + b = 14

b = 14 - a

So now we can right the Pythagorean theorem as follows:

a^2 + b^2 = hypotenuse^2\\a^2 + (14-a)^2=10^2\\a^2+ 14^2-28\,a+a^2=100\\2\,a^2-28\,a +96=0\\2\,(a^2-14\,a+48)=0\\2\,(a^2-6\,a-8\,a+48)=0\\2(a\,(a-6)-8\,(a-6))=0\\2\,(a-6)\,(a-8)=0

and from this expression in factor form to be zero a must be 6 or a must be 8.

Therefore the solutions are a = 6 (and therefore b = 14 - 6 = 8)

or a = 8 (and therefore b = 14 - 8 = 6)

7 0
3 years ago
Read 2 more answers
John is 10 cm taller than Peter. Peter is h cm tall.Which of these is John's height? A)10h B) 10 ⎼ h C) h ⎼10 D)h+10
VARVARA [1.3K]

Answer:

D

Step-by-step explanation:

John is 10cm taller than Peter, if Peter is h than John's height would be h+10 since it is Peter's height plus ten.

8 0
3 years ago
³√125×2³ is? please help no idea​
atroni [7]
The answer is 40

³√125=5
2^3= 8
5x8= 40
5 0
3 years ago
Read 2 more answers
If ADEF = AJKL, DE = 18, EF = 23, DF = 9x - 23, JL = 7x-11, and JK = 3y - 21, find the
Feliz [49]

Answer:

x = 6

y = 13

Step-by-step explanation:

since DE and JK are congruent, they are both 18

to find 'y':

3y - 21 = 18

3y = 39

y = 13

DF and JL are diagonals that are congruent so:

9x - 23 = 7x - 11

2x = 12

x = 6

4 0
3 years ago
Read 2 more answers
Derek reads 1/2 chapters of his book each night he has 8 1/2 chapters left to read how many night it takes Derek to finish readi
Delvig [45]

Answer:

17 nights

Step-by-step explanation:

8 1/2 divided by 1/2 = 17

6 0
3 years ago
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