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Katyanochek1 [597]
2 years ago
14

ABCD. If AB=5x and CD=3x + 10, find CD A. 25 B. 2 C. 5 D. 20

Mathematics
2 answers:
Alex_Xolod [135]2 years ago
4 0

Answer:

c

Step-by-step explanation:

cestrela7 [59]2 years ago
3 0

Answer:

A.25

Step-by-step explanation:

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Can someone answer these questions ? thank you
Naya [18.7K]

Answer:

Step-by-step explanation:

12a)To rationalize the denominator, multiply the denominator and numerator by √5.

\frac{15}{\sqrt{5}}=\frac{15*\sqrt{5}}{\sqrt{5}*\sqrt{5}}\\\\=\frac{15\sqrt{5}}{5}\\\\=3\sqrt{5}

b) (a+b)² = a² + 2ab + b²

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13) (a + b)(a - b) = a² - b²

\frac{(6-\sqrt{5})(6+\sqrt{5})}{\sqrt{31}}=\frac{6^{2}-(\sqrt{5})^{2}}{\sqrt{31}}\\\\ =\frac{36-5}{\sqrt{31}}\\\\=\frac{31}{\sqrt{31}}\\\\=\frac{31*\sqrt{31}}{\sqrt{31}*\sqrt{31}}\\\\=\frac{31\sqrt{31}}{31}\\\\=\sqrt{31}

5 0
3 years ago
What is the equation of a line that has a slope of 0 and a y-intercept of 4
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Answer:

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Step-by-step explanation:


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