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2 years ago

6

Find: (6m5 + 3 - m - 4m)-(-m + 2m - 4m + 6)

1 answer:

meriva2 years ago

4 0

I think you can google it

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2x2 - 4x –9 = 0<br> Completing the swuare

ASHA 777 [7]

Step-by-step explanation:

$(a-b)^2=a^2-2ab+b^2\\\\2x^2-4x-9=0\qquad|\text{add 9 to both sides}\\\\2x^2-4x-9+9=0+9\\\\2x^2-4x=9\qquad|\text{divide both sides by 2}\\\\\dfrac{2x^2}{2}-\dfrac{4x}{2}=\dfrac{9}{2}\\\\x^2-2x=4.5\\\\x^2-2\cdot x\cdot1=4.5\qquad|\text{add}\ 1^2\ \text{to both sides}\\\\x^2-2\cdot x\cdot1+1^2=4.5+1^2\\\\(x-1)^2=5.5\iff x-1=\pm\sqrt{5.5}\qquad|\text{add 1 to both sides}\\\\x=1-\sqrt{5.5}\ \vee\ x=1+\sqrt{5.5}$

4 0

3 years ago

A=v1-v0/t solve for v1

Tom [10]

A=v1-v0/t
a*t=v1-v0
(a*t)+v0=v1

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=x-8%5C5%3D2%2F4" id="TexFormula1" title="x-8\5=2/4" alt="x-8\5=2/4" align="absmiddle" class="l

SVETLANKA909090 [29]

Answer:

x = $\frac{17}{2}$

Step-by-step explanation:

Decimal Form:

x = 8.5

Mixed Number Form:

x = $8 \frac{1}{2}$

4 0

3 years ago

Solving quadratics by factoringx2-4x-25=-4x

DiKsa [7]

Answer:

x = ± 5

Step-by-step explanation:

Given

x² - 4x - 25 = - 4x ( add 4x to both sides )

x² - 25 = 0 ( add 25 to both sides )

x² = 25 ( take the square root of both sides )

x = ± $\sqrt{25}$ = ± 5

6 0

3 years ago

5+5?????????????????????????????????????????/

densk [106]

Answer:

Hello There!!

Step-by-step explanation:

Here is your answer:5+5 eqauls 10.

hope this helps,have a great day!!

~Pinky~

3 0

2 years ago