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ICE Princess25 [194]
3 years ago
5

Need a quick answer please

Mathematics
2 answers:
melamori03 [73]3 years ago
5 0

A) always

since equilateral triangles have the same side length.

ra1l [238]3 years ago
4 0

Answer:

Always.

Step-by-step explanation:

Congruent means equal in mathematics. And equilateral triangles' sides are <u>always</u> equal. Therefore, always is your answer.

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Pls help asap!! this is due really soon
s2008m [1.1K]

Answer:

EF=20

Step-by-step explanation:

EF is midsegment of the triangle so the equation is

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6 0
2 years ago
Can you help me find the LCM of 6 and 15
PIT_PIT [208]
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7 0
3 years ago
Read 2 more answers
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

(1 +√3)² = 1² + 2*1*√3 + (√3)²

= 1 + 2√3 + 3

= 4 + 2√3

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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 measure of ∠R?
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