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3 years ago

Convert 0.00049 to scientific notation.

Mathematics

2 answers:

ludmilkaskok [199]3 years ago

5 0

Answer:

4.9 x 10^-4 is the scientific notation

Move the decimal 4 places from left to right

frozen [14]3 years ago

4 0

Answer:

$\displaystyle 4,9 \times 10^{-4}$

Step-by-step explanation:

$\displaystyle 0,00049 = 4,9 \times 10^{-4}$

You move the decimal mark four times to the left.

I am joyous to assist you anytime.

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What’s the answer I don’t understand it or know it.

fredd [130]

Answer:

I tried solving it and didn't get same exact numbers but I got 8.67 million people so it might be answer choice B.

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2 years ago

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Debora [2.8K]

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2 years ago

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3(4x-9)>=2x+12 >= is greater than equal to

ValentinkaMS [17]

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3 years ago

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What is the surface area of the triangular prism shown?

Lunna [17]

Answer:

The first step that we are going to do is to solve the area of the top rectangle. We are given a width of 15 cm and a length of 25 cm so we can just multiply them against each other to get the area.

$Area = l * w$

$Area = 25\ cm * 15\ cm$

$Area = 375\ cm^2$

The second side that we are going to solve for is the bottom rectangle. We are given a width of 12 cm and a length of 25 cm so lets just multiply them against each other to get the area.

$Area = l * w$

$Area = 25\ cm * 12\ cm$

$Area = 300\ cm^2$

The next area that we are going to determine is the back rectangle which has a width of 9 cm and a length of 25 cm so lets just multiply them against each other to get the area.

$Area = l * w$

$Area = 25\ cm * 9\ cm$

$Area = 225\ cm^2$

The final area that we have to determine are the side triangles. After determining the area of one triangle we will have to multiply it by 2 to get the area for both of the triangles. We are given a base of 12 cm and a height of 9 cm so lets just use the formula to find the area.

$Area = \frac{1}{2}* b*h$

$Area = \frac{1}{2}* 12\ cm*9\ cm$

$Area = 54\ cm^2$

Multiply it by two to get the area for both of the triangles.

$Area = 54\ cm^2 * 2$

$Area = 108\ cm^2$

Finally, we are onto the last part which is to add up all of the areas and get the surface area after we combine everything.

$Area_{total}=375\ cm^2 + 300\ cm^2 + 225\ cm^2 + 108\ cm^2$

$Area_{total}=1008\ cm^2$

Therefore, our final answer is option B, 1008 $cm^2$

Hope this helps!

4 0

1 year ago

What is the answer, she explanation pls

Bingel [31]

Answer: OPTION D.

Step-by-step explanation:

First, it is important to know the definition of "Chord" and "Arcs" in circles.

A Chord is defined as a segment that joins any two points of a circle.

An Arc is defined as portion of the circumference of a circle.

By definition:

1) If two chords of a circle are congruent (which means that they have equal measure), then their intercepted Arcs are also congruent.

2) If the Arcs are congruent, then they have congruent chords.

In this case, you know that the Arc GH and the Arc JK are congruent. Therefore, you can conclude that the Chord GH and the Chord JK are also congruent.

Then, knowing that:

$GH=9\ units$

You can determine that:

$JK=9\ units$

7 0

3 years ago