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Bingel [31]
3 years ago
9

What is 3x?

Mathematics
1 answer:
MissTica3 years ago
6 0

Answer: 3 · 30= 90

Step-by-step explanation:

yes you are correct

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Which of the following is the prime factored form of the lowest common denominator 5/9 + 7/12 ?
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11 22 33 44 55 66 77 what comes next
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The scores of adults on an iq test are approximately normal with mean 100 and standard deviation 15. clara scores 118 on such a
Katena32 [7]
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3 years ago
Lines
SashulF [63]

Answer:

5 cm

Step-by-step explanation:

If AB is tangent to the circle k(O), then radius OB is perpendicular to segment AB.

If BC is tangent to the circle k(O), then radius OC is perpendicular to segment AC.

Consider two right triangles ABO and ACO. In these triangles:

  • AO is common hypotenuse;
  • ∠OBA=∠OCA=90°, because AB⊥OB, AC⊥OC;
  • OB=OC as radii of the circle k(O).

By HL theorem, triangles ABO and ACO are congruent. Then

  • ∠OAB=∠OAC=30°;
  • AC=AB=5 cm.

Hence, ∠BAC=∠OAB+∠OAC=30°+30°=60°.

Consider triangle ABC, this triangle is isosceles triangle. In isosceles triangles angles adjacent to the base are congruent, thus

∠CBA=∠BCA=1/2(180°-60°)=60°.

Therefore, triangle ABC is an equilateral triangle, so BC=AB=AC=5 cm.

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How are factors related to prime numbers?
melomori [17]
They have some of the same numbers 

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