Solve for x: x2-14x+49

Mathematics

2 answers:

Bezzdna [24]3 years ago

8 0

Answer:

x2 − 14x + 49 = 0

Step-by-step explanation:

anzhelika [568]3 years ago

7 0

$\displaystyle\\x^2-14x+49=0\\\\x_{1,2}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{14\pm\sqrt{196-4\cdot49}}{2}= \frac{14\pm\sqrt{196-196}}{2}=\frac{14}{2}=7\\ \\\boxed{x_1=x_2=7}$

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Answer:

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Step-by-step explanation:

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Please help asap!!!!!!!!!!!!

tatuchka [14]

Your answer is C - 50.

Hope this helps.

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3 years ago

Read 2 more answers

Area of triangle where A=50, b=31, c=18

Mrac [35]

Use Heron's Formula:
s means semi-perimeter = (50 + 31 + 18) / 2 = 99 / 2 =
49.5
area = sq root [(s * (s-a) * (s-b) * (s-c)]
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Source:
http://www.1728.org/trianinq.htm

5 0

4 years ago

When solving the equation 2/3 b 5 = 7, you should first ? from both sides. Then you should multiply both sides by the ? of ?. Yo

Tju [1.3M]

Depends on the question...

If your question is 2/3b + 5 = 7, then follow this one
$\frac{2}{3}b + 5 = 7\\\\\sf You~ first~subtract~ 5 ~on ~both~ sides\\\\Then ~you~multiply~by~\frac{3}{2}~on~both~sides.\\\\ So...\\\\ \frac{2}{3}b + 5 - 5 = 7 - 5\\\\\frac{2}{3}b = 2\\\\\frac{2}{3}b \times \frac{3}{2} = 2 \times \frac{3}{2}\\\\b = 3$
Your final answer will be b = 3

If your question is 2/3b - 5 = 7, then follow this one
$\frac{2}{3}b - 5 = 7\\\\\sf You~ first~add~ 5 ~on ~both~ sides\\\\Then ~you~multiply~by~\frac{3}{2}~on~both~sides.\\\\ So...\\\\ \frac{2}{3}b - 5 + 5 = 7+5 \\\\\frac{2}{3}b = 12\\\\\frac{2}{3}b \times \frac{3}{2} = 12 \times \frac{3}{2}\\\\b =18$
Your final answer will be b = 18

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nata0808 [166]

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