Triangle ABC has a perimeter of 22cmAB=8cm
BC=5cm
By calculations, deduce whether triangle ABC is a right angled triangle

Answers

Answer 1
Answer:

ΔABC is not a right angled triangle.

Step-by-step explanation:

  • Step 1: Given perimeter of ΔABC = 22 cm, AB = 8 cm and BC = 5 cm. Find AC.

Perimeter = AB + BC + AC

⇒ AC = 22 - (8 + 5) = 22 - 13 = 9 cm

  • Step 2: Find whether the triangle is right angled using Pythagoras Theorem.

AC² = AB² + BC²

⇒ AC² = 9² = 81

⇒ AB² + BC² = 8² + 5² = 64 + 25 = 89

∴ AC² ≠ AB² + BC²

ΔABC is not a right angled triangle.


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A county has 90 schools. The county received 992 new computers. Are there enough computers so that each school can get 11 computers? Explain

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Yes, there are enough computers 992 to be distributed to 90 schools.

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Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

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Answer:

there will be enough for each school to get 11 computers

Step-by-step explanation:

use a calculator and put in 992 divided by 11. your answer should appear as 90.1818182