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2 years ago

Convert 2.8 x 10³ to standard notation.

Mathematics

2 answers:

Oliga [24]2 years ago

7 0

Answer:

0.0028

Step-by-step explanation:

move the decimal point to the left (if the exponent of ten is a negative number), or to the right (if the exponent is positive)

maxonik [38]2 years ago

7 0

<h3>Answer: 2800</h3>

Reason:

The exponent is 3, which means we move the decimal point 3 spaces to the right to go from 2.8 to 2800.0 or simply 2800

If the exponent was negative, then you move that many spaces to the left.

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N={1,2,3,4,5,6,7,8,9,10} es un conjunto infinito?

Contact [7]

Answer:

correct

Step-by-step explanation:

4 0

3 years ago

How to verify frac(sec theta/ csc theta- cot theta -frac(sectheta/csc theta +cot theta = 2csc theta

drek231 [11]

$\frac{sec \theta}{ csc \theta- cot \theta }-\frac{sec \theta}{csc \theta +cot \theta}= 2csc$

$\ sec(x)= \frac{1}{cos(x)} \\ csc(x)= \frac{1}{sin(x)} \\ cot(x)=\frac{sin(x)}{sin(x)} \\ sin^2(x)+cos^2(x)=1$

$\frac{sec \theta( csc \theta+cot \theta)}{ (csc \theta- cot \theta)( csc \theta+ cot \theta) }-\frac{sec \theta( csc \theta- cot \theta)}{( csc \theta- cot \theta)(csc \theta +cot \theta)} \\ =\frac{sec \theta csc \theta+sec \theta cot \theta-sec \theta csc \theta+sec \theta cot \theta}{ csc^2 \theta- cot^2 \theta }$
$=\frac{2sec \theta cot \theta}{ csc^2 \theta- cot^2 \theta } \\ = \frac{2 \times \frac{1}{cos\theta}\times\frac{cos\theta } {sin\theta }}{(\frac{1 } {sin\theta })^2-(\frac{cos\theta } {sin\theta })^2} \\ = \frac{\frac{2 } {sin\theta }}{\frac{1-cos^2\theta } {sin^2\theta }} \\ =\frac{\frac{2 } {sin\theta }}{\frac{sin^2\theta } {sin^2\theta }} \\ =\frac{2 } {sin\theta } \\ =2 \times \frac{1}{sin\theta } \\ =2csc \theta$

$\frac{sec \theta}{ csc \theta- cot \theta }-\frac{sec \theta}{csc \theta +cot \theta}= 2csc$

7 0

4 years ago

a committee is to consist of two members. if there are seven people available to serve on the committee, how many different comm

Doss [256]

Answer:

Step-by-step explanation:

Use the combination formula.

8 0

3 years ago

Read 2 more answers

What three-dimensional solid has 6 rectangular faces, 2 equal bases that are not rectangles, and 18 edges? triangular prism pent

leonid [27]

Hexagonal prism because it has six rectangular faces (one that connects each edge of the two hexagon faces) and 18 edges. 12 are for the two hexagon faces, and the other 6 are for the rectangular faces.

I hope this helps.

Have a nice day.

7 0

4 years ago

Read 2 more answers

Last year you bought a pair of boots for $84 last year. Your friend bought the same pair of boots this year for $120. What is th

Jlenok [28]

Answer:

30%

Step-by-step explanation:

70% of 120 is 84. So take the remainder of 70 (30, as %'s go up to 100.) and that's the percent left. We can "fact check this" the other way around as well.

30% of 120 = 36.

84 + 36 = 120.

The price of the boots have changed/raised 30%.

<u>Hope this helps and have a nice day!</u>

6 0

3 years ago