What is 0.0000000405 in standard notation

2 answers:

8 0

0.0000000405 in <span>scientific </span>notation is 4.05 x 10^-8

You would move the decimal until after the 4, which will be 8 times. And since the zeros are in front so the number is really small, the exponent will be a negative.

nydimaria [60]2 years ago

3 0

<span>2. 405000000. hope that helped</span>

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Bethany paid $408.75 for a pair of diamond stud earrings. The sale price was $375. What is the Percent of Sales Tax she paid for

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Answer:

She paid 9% of sales tax

Step-by-step explanation:

The sale price of diamond = $375

Let x be percent of sales tax

So, amount of tax = $x\% \times 375 = \frac{x}{100} \times 375 =3.75x$

So, Amount including tax = 375+3.75x

We are given that Bethany paid $408.75 for a pair of diamond stud earrings.

So, 375+3.75x=408.75

3.75x=408.75-375

$x=\frac{408.75-375}{3.75}$

x=9

Hence She paid 9% of sales tax

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3 years ago

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F(x) has only one x-intercept when x=0

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g(x) is f(x) reflected about the x axis and shifted downwards by 6 units.

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3 years ago

The area of a compact disc is 452 4/7 square centimeters. What is the diameter of a compact disc ? Use 22/7 as an approximation

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