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3 years ago

Look at the screen shot

Mathematics

1 answer:

mamaluj [8]3 years ago

5 0

For the total of the sales, you would just add all the things he bought:
$50+39+26=115$
His total was $115.

For the tax, you would just multiply the tax rate (0.04) by the total:
$115*0.04=4.6$
So, he paid $4.6 for taxes.

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Answer:

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3 years ago

Drag each length to the correct location on the image. Each length can be used more than once, but not all lengths will be used.

RSB [31]

Answer:

The length of the unknown sides of the triangles are as follows:

CD = 10√2

AC = 10√2

BC = 10

AB = 10

ΔACD is a right angle triangle. Therefore, Pythagoras theorem can be used to find the sides of the triangle.

c² = a² + b²

where

c = hypotenuse side = AD = 20

a and b are the other 2 legs

lets use trigonometric ratio to find CD,

cos 45 = adjacent / hypotenuse

cos 45 = CD / 20

CD = 1 / √2 × 20

CD = 20 / √2 = 20√2 / 2 = 10√2

20² - (10√2)² = AC²

400 - 100(2) = AC²

AC² = 200

AC = √200 = 10√2

ΔABC is a right angle triangle too. Therefore,

AB² + BC² = AC²

Using trigonometric ratio,

cos 45 = BC / 10√2

BC = 10√2 × cos 45

BC = 10√2 × 1 / √2

BC = 10√2 / √2 = 10

(10√2)² - 10² = AB²

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Step-by-step explanation:

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As you see the answer :) its in the pic

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3 years ago

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Answer:

A, E

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2 years ago