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Alex17521 [72]
3 years ago
12

3x2 - 6x + 1 = 0

Mathematics
1 answer:
Tresset [83]3 years ago
4 0

Answer:

.2 and 1.8

Step-by-step explanation:

If you graph the quadratic, can find where y = 0 or where the graph intersects the x-axis.  

you can also use the quadratic formula to solve this problem.  

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Find the smallest square number divisible by each of these numbers 6,9,and 15
STALIN [3.7K]

Answer:

\frac{6}{3}  = 2

\frac{9}{3}  = 3

\frac{15}{3}  = 5

So the smallest number is 3. As it divides 6,9 and 15.

6 0
3 years ago
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A college student takes the same number of credits each semester. She had 8 credits when she started, and after 7 semesters, she
boyakko [2]

Answer:

12 credits per semester

Step-by-step explanation:

she has 92 in the end but she started off with 8 so your first step is to subtract 8 from 92 which gives you 84 once you get 84 you divide that by 12 you get 7 which means she got 12 credits in each of her 7 semeters

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2 years ago
Pls help meh Area of a Circle (rounded)
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Answer:

28.27 or 28 for rounded

Step-by-step explanation:

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3 years ago
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WILL GIVE 30 POINTS <br><br> identify the polynomial. a^2b-cd^3
madam [21]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Use a half-angle identity to find the exact value
Tatiana [17]

Given:

\cos 15^{\circ}

To find:

The exact value of cos 15°.

Solution:

$\cos 15^{\circ}=\cos\frac{ 30^{\circ}}{2}

Using half-angle identity:

$\cos \left(\frac{x}{2}\right)=\sqrt{\frac{1+\cos (x)}{2}}

$\cos \frac{30^{\circ}}{2}=\sqrt{\frac{1+\cos \left(30^{\circ}\right)}{2}}

Using the trigonometric identity: \cos \left(30^{\circ}\right)=\frac{\sqrt{3}}{2}

            $=\sqrt{\frac{1+\frac{\sqrt{3}}{2}}{2}}

Let us first solve the fraction in the numerator.

            $=\sqrt{\frac{\frac{2+\sqrt{3}}{2}}{2}}

Using fraction rule: \frac{\frac{a}{b} }{c}=\frac{a}{b \cdot c}

            $=\sqrt{\frac {2+\sqrt{3}}{4}}

Apply radical rule: \sqrt[n]{\frac{a}{b}}=\frac{\sqrt[n]{a}}{\sqrt[n]{b}}

           $=\frac{\sqrt{2+\sqrt{3}}}{\sqrt{4}}

Using \sqrt{4} =2:

           $=\frac{\sqrt{2+\sqrt{3}}}{2}

$\cos 15^\circ=\frac{\sqrt{2+\sqrt{3}}}{2}

5 0
3 years ago
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