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3 years ago

I need help can someone help I don’t understand pls thanks

Mathematics

2 answers:

Vaselesa [24]3 years ago

8 0

Answer:

$6.50

Step-by-step explanation:

Three tickets at $14.50 each comes to 3($14.50), or $43.50.

From a $50 bill tendered, Randall should expect to receive

$50 - $43.50, or $6.50, in change.

Change = $6.50

lys-0071 [83]3 years ago

7 0

The answer is $6.50 hope this helped

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Answer:

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3 years ago

1. O perímetro de um quadrado é 20 cm. Determine sua diagonal. 1 ponto a) 2 √5 cm b) 20√2 cm c) 5√2 cm d) 2√10 cm

Helen [10]

Answer:

c) 5√2 cm

Step-by-step explanation:

A square with side length l has a perimeter given by the following equation:

P = 4l.

In this question:

P = 20

So the side length is:

4l = 20

l = 20/4

l = 5

Diagonal

The diagonal forms a right triangle with two sides, in which the diagonal is the hypothenuse. Applying the pytagoras theorem.

$d^{2} = l^{2} + l^{2}$

$d^{2} = 5^{2} + 5^{2}$

$d^{2} = 50$

$d = \pm \sqrt{50}$

Lenght is a positive meausre, so

$d = \sqrt{50}$

$d = \sqrt{2 \times 25}$

$d = \sqrt{2} \times \sqrt{25}$

$d = 5\sqrt{2}$

So the correct answer is:

c) 5√2 cm

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3 years ago

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3 years ago