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horsena [70]
3 years ago
7

Triangle ABC has perimeter 22 cm. AB= 8cm BC=5cm By calculation deduce whether triangle ABC is a right-angled triangle.

Mathematics
1 answer:
vodka [1.7K]3 years ago
3 0

The perimeter is 22cm therefore the remaining side is 22-8-5=9 cm. A right triangle follows the Pythagorean theorem which states that any side is equal to the square root of the sum of the squares of the other side or A=B2+C2. Using this we can get side AB and see if we can get it using the Pythagorean theorem. 52+92=10.30 cm<span>. therefore, triangle ABC is not a right-angled triangle</span>

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Austin borrowed money from a credit union for 4 years and was charged simple interest at an annual rate of 5% the total interest
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Given:

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To find:

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Solution:

The formula for simple interest is:

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160=\dfrac{P\times 5\times 4}{100}

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8 0
2 years ago
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pshichka [43]

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<u>Step-by-step explanation:</u>

Step 1:

Given total pounds of mixture = 12 pounds, cost of macadamia nuts per pound = $9, cost of almonds per pound = $5.25, total cost of mixture per pound = $7.75.

Let number of pounds of macadamia nuts be x and number of pounds of almonds be 12-x.

Step 2:

Form an equation using the above information.

⇒ 9x + 5.25 (12-x) = 12 × 7.75

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Step 3:

Calculate number pounds of almonds

⇒ Number of pounds of almonds = 12 - x = 4 pounds.

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Step-by-step explanation:

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3 years ago
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1

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