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3 years ago

12

The figures are similar. What is the value of x?

2 answers:

Over [174]3 years ago

7 0

Answer:

its 18 inches not 14. if you rotate it you'll see that the x side is similar to the 9 side. and since the one on the right is times 2 in size, just times 9 by 2 and you get 18, which is the answer.

Citrus2011 [14]3 years ago

6 0

Answer: The answer is 18

Step-by-step explanation:

The figures are the same shape, just one is longer. As you can see, the smallest side on the smaller figure is 3 inches. If you look at the larger figure, the smallest side is 6 inches. From this, you can see that you are supposed to multiply the lengths on the smaller figure by 2, to the lengths for the larger figure.

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3 years ago

Factor the expression completely.<br> 625x4 - 256y4

scoundrel [369]

<u>Answer:</u>

<u>(625 • (x4)) - 28y4</u>

<u></u>

<u> 54x4 - 28y4 3.1 Factoring: 625x4-256y4 </u>

<u> </u>

<u>Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B) </u>

<u> </u>

<u>Proof : (A+B) • (A-B) = </u>

<u> A2 - AB + BA - B2 = </u>

<u> A2 - AB + AB - B2 = </u>

<u> A2 - B2Note : AB = BA is the commutative property of multiplication. </u>

<u> </u>

<u>Note : - AB + AB equals zero and is therefore eliminated from the expression. </u>

<u> </u>

<u>Check : 625 is the square of 25 </u>

<u>Check : 256 is the square of 16 </u>

<u>Check : x4 is the square of x2 </u>

<u> </u>

<u>Check : y4 is the square of y2 </u>

<u> </u>

<u>Factorization is : (25x2 + 16y2) • (25x2 - 16y2) 3.2 Factoring: 25x2 - 16y2 </u>

<u> </u>

<u>Check : 25 is the square of 5 </u>

<u>Check : 16 is the square of 4 </u>

<u>Check : x2 is the square of x1 </u>

<u> </u>

<u>Check : y2 is the square of y1 </u>

<u> </u>

<u>Factorization is : (5x + 4y) • (5x - 4y)this is the answer: (25x2 + 16y2) •(5x + 4y) • (5x - 4y)</u>

5 0

3 years ago

Solve for x use the completing the square method x^2+6x=5

Mrac [35]

Answer:

$x_{1} =-3 +\sqrt{14} \\\\x_{2} =-3 -\sqrt{14}$

Step-by-step explanation:

$x^{2}$ +6x-5=0

we divide the coefficient of the X by half :

in this case: 6/2 = 3 , then we do the following

The result obtained is raised to square power: 3^2=9

we sum and subtract by 9 to maintain the balance of the equation:

$x^{2}$ +6x+9-9-5=0

we have:

$(x+3)^{2}$ -9-5=0

$(x+3)^{2}$ = 14

lets apply square root on both sides of the equation:

$\sqrt{(x+3)^{2}}=\sqrt{14}$

we know:

$\sqrt{a^{2}} = abs(a)$

so we have:

abs(x+3)= $\sqrt{14}$

from where two solutions are obtained

$x_{1} + 3 =\sqrt{14} \\\\x_{2} + 3 =-\sqrt{14}$

finally we have:

$x_{1} =-3 +\sqrt{14} \\\\x_{2} =-3 -\sqrt{14}$

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Paha777 [63]

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Step-by-step explanation:

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nata0808 [166]

The answer is 9

You should download it kinda helps

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