2 years ago

What do you think of when you hear "decimal notation

Mathematics

1 answer:

Vera_Pavlovna [14]2 years ago

8 0

Answer:

The notation of decimals is the written form of base 10 place value.

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What is 49 divideed by 21

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2.3

Step-by-step explanation:

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rachel is trying to find deminsions of her new office. the office is 150 aquare feet(area+150ft2) the width of the office is 5 f

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Step-by-step explanation:

length =15 feet

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2 years ago

A candy factory made 54 boxes of chocolates. Each box weighs 2 pounds. They packed the boxes in 6 cases with the same number of

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There was 18 pounds of chocolate in each case

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Prove this trigonometric equation;<br><br> - tan^2x + sec^2x = 1,

alekssr [168]

Hey there :)

- tan²x + sec²x = 1 or 1 + tan²x = sec²x

sin²x + cos²x = 1
Divide the whole by cos²x

$\frac{sin^2x}{cos^2x} + \frac{cos^2x}{cos^2x} = \frac{1}{cos^2x}$

$\frac{sinx}{cosx} = tanx$ so $\frac{sin^2x}{cos^2x} = tan^2x$
and
$\frac{1}{cosx} = secx$ so $\frac{1}{cos^2x} = sec^2x$

Therefore,
tan²x + 1 = sec²x
Take tan²x to the other side {You will have the same answer}

1 = - tan²x = sec²x or sec²x - tanx = 1

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2 years ago

What is the area of a semicircle with diameter of 6

pogonyaev

Area of circle = pi (d/2)^2
area of semi-circle =0.5* pi (d/2)^2
=0.5* pi (6/2)^2
=14.14

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