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3 years ago

What is the scientific notation of 0.000042?

Mathematics

2 answers:

Mnenie [13.5K]3 years ago

7 0

Answer:

Sci. Notation= 4.2 x 10 to -5th power

Step-by-step explanation:

1. Go to decimal and move between 4 and 2

2. the number of zeroes after the the initial place of the decimal is the power it goes to

3. you pass four zeroes and the 4 which gives you five places, and the -5th power

Hope this helps :)

vampirchik [111]3 years ago

5 0

Answer:

4.2 × 10⁻⁵

Step-by-step explanation:

The decimal point must be after the first non-zero digit.

⇒ 4.2

Multiply 4.2 by a number that results in 0.000042. That number is 0.00001 or 10⁻⁵.

⇒ 4.2 × 10⁻⁵

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

Answer 1: 0.8

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Step-by-step explanation:

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Answer 3:

A. Emma earned $18.40 by babysitting. she worked 2.3 hours.

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4 years ago

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Answer:

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Step-by-step explanation:

Step 1: Determine the dimensions of the rectangle

Width=w

Length=l

But;

triple width=length+36

3×w=l+36

3 w=l+36

The length can be expressed as;

l=3 w-36

width=w

length=3 w-36

Step 2: Determine the perimeter of the rectangle

P=2(L+W)

where;

P=perimeter

L=length

W=width

In our case;

P=96 inches

W=w

L=3 w-36

replacing;

2(w+3 w-36)=96

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8 w-72=96

8 w=96+72=168

8 w=168

w=168/8=21

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