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inessss [21]
2 years ago
6

PLZZZ FASTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT

Mathematics
1 answer:
Inessa [10]2 years ago
3 0

Answer:

130°

130-67=

63÷3=

21

x=21

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What is the least common denominator for the fractions 9/14and 2\21
Diano4ka-milaya [45]
Hello : 
14 = 2×7
21 = 3×7
<span> the least common denominator for the fractions 9/14and 2\21  is : 6×7=42</span>
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goldfiish [28.3K]
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2 years ago
Use the quadratic formula to solve. Round to the nearest tenth if necessary.<br> 2x^2 -3x -7 = 0
abruzzese [7]

The quadratic formula is:

\frac{-b + \sqrt{b^2 - 4ac} }{2a} and  \frac{-b - \sqrt{b^2 - 4ac} }{2a}

In this case, a = 2, b = -3, and c = -7

So, we can plug in the numbers to get:

  \frac{-(-3) + \sqrt{(-3)^2 - 4(2)(-7)} }{2(2)} and    \frac{-(-3) - \sqrt{(-3)^2 - 4(2)(-7)} }{2(2)}

Simplifying, we get:

    \frac{3 + \sqrt{65} }{4} and   \frac{3 - \sqrt{65} }{4}

You need to use a calculator to find what these would be in decimal form. The answer, rounded to the nearest tenth, is: x = 2.8, x = -1.3

8 0
2 years ago
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Darya [45]
The second one is correct
7 0
3 years ago
Were would coordinates 8,7 be after a feflection over the x axis
Svet_ta [14]

Answer:

(8, -7)

Step-by-step explanation:

well since it flip over the x-axis only, the 8 stays the same, however, the 7 flips completely to the second quadrant and becomes -7.

Hope this helped and have a amazing day.

3 0
2 years ago
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