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Lapatulllka [165]
3 years ago
10

Select the correct answer. Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What

is this number expressed in scientific notation? A. 4.2E6 B. 4.2E-6 C. 42E6 D. 4.2E5 E. 4.2E-5
Mathematics
1 answer:
vivado [14]3 years ago
8 0

Answer:

Step-by-step explanation:

A. 4.2E6 because when putting a number into scientific notation, you would want one number in front of the decimal place and then the trailing numbers would follow. The exponent or E stand for how many numbers are after the decimal, which in this case would be 6.  

4,200,000 → 4.2 x 10^6 which is equal to saying 4.2E6

Tip: If the exponent is negative than the decimal would go in the opposite direction. For example:

4,200,000 → 4.2 x 10^-6 would not equal each other because 4.2 x 10^-6 means 0.000004, six numbers would be behind the decimal.

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When using re-grouping to solve 21 x 43, what are the four products that would be calculated and then added?
pshichka [43]

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c

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A contractor is given a scale drawing of a rectangular patio. The scale from the patio to the drawing is 4ft to 1in. What is the
AnnyKZ [126]

Answer:

170 ft²

Step-by-step explanation:

Given:

Patio drawing of 4.25 in by 2.5 in

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Area of actual Patio = area of a rectangle = length × width

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5 0
2 years ago
What are the zeros of the polynomial function f(x) = x3 - 2x2 - 24x? (1 point)
vodka [1.7K]

f(x) = x³ - 2x² - 24x

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2 years ago
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Step-by-step explanation:

Hey there!

From the given figure;

An exterior angle is 127°.

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Now;

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Therefore, the value of "X" is 53°.

<u>Hope</u><u> it</u><u> helps</u><u>!</u>

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