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omeli [17]
3 years ago
12

Which of the following expressions is correctly written in scientific notation?

Mathematics
1 answer:
valentinak56 [21]3 years ago
3 0

Answer: D is correctly written in scientific notation.

Step-by-step explanation:

The base has to be between 1 and 10.

A has a base of 16.4 which is greater than 9.

B is not even in scientific because the base it being raise to an exponent

C has 0.71 as base which is less that.

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Points A, B, C, and D are the vertices of a square. Points E and F are the center of two congruent semicircles that are tangent
Masja [62]

Answer:

8 sq units

Step-by-step explanation:

to find the area of shaded region:

area of square minus sum of areas of each semi-circle

A(square) = 6² = 36

A (semi-circle) = πr²/2

= π3²/2

= 4.5π

Since there are two semi-circles, that makes one complete circle with an area of 9π

A(circle) ≈ 28 sq units

36-28 = 8 sq units

5 0
3 years ago
Read 2 more answers
The length of one edge of a cube is 3 units. What is the volume of this cube in cubic units?
matrenka [14]

Step-by-step explanation:

<h3 /><h3><u>This means that the side length of the cube is 3 units. The volume, which we previously stated was equal to s3, must then be 33, or 27 cubic units. The answer is 27.</u></h3>
6 0
3 years ago
5.Footlocker buys Air Jordans for $30 a pair. They mark it up 75%. How much is the mark-up on a pair of Air Jordans
allochka39001 [22]

Answer:

$52.50

Step-by-step explanation:

What you do is you move the decimal two times to the left from 75%.

0.75*?=?

Take the orginal price and multiply ($30) by 0.75.

0.75*30= $22.50

Take 22.50 and add that to your original amount.

$22.50+$30= $52.50 or $52.5

4 0
3 years ago
Please help me on my test it’s urgent. It will mean a lot to me
Ierofanga [76]

Answer:

I honestly don't know and I need help too

4 0
3 years ago
What is the arithmetic mean of the first million odd numbers
balandron [24]
It's 1,000,000: 

<span>the sum is 1 + 3 + 5 + ... 1999999 </span>

<span>= 1 + 2 + ... + 2000000 - 2*(1 + ... + 1000000) </span>

<span>= 2000000*2000001/2 - 2*(1000000*1000001 / 2) </span>

<span>= 1000000*(2000001 - 1000001) = 1000000000000 (one million million) </span>

<span>and dividing this by one million to get the average, </span>

<span>you get one million</span>
8 0
4 years ago
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