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3 years ago

Help me please answer all because idk if I was correct scientific notation

Mathematics

1 answer:

valentina_108 [34]3 years ago

3 0

Answer:

I think the first 4 are right

5-8

sorry I cant read it it it is too small so I will explain

5.1 x 10^-2 would be 0.051 just move the decimal left x spaces where x is the exponent

4.4 x 10^3

7.5 x 10^4

6.99 x 10^7

5.75 x 10^9

8.4 x 10^-2

9.9 x 10^-3

5.15 x 10^-7

3.07 x 10^-5

you got it right

Singapore

Luxembourg

Australia

Egypt

Brazil

3,670,000,000

6.2 x 10^-6

125,000,000,000

1.25 x 10^11

Step-by-step explanation:

i hope I helped

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Answer:

Step-by-step explanation:

if she connects it to any other point angle would be more the 30 degree

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3 years ago

Read 2 more answers

Help me answer this question.

neonofarm [45]

Answer:

<h2>8 units²</h2>

Step-by-step explanation:

Let side of the square = a

The , Area of square = a²

Now, Midpoint of Diagonal DB is E

And DE = 2 units

So, DB = 2 DE = 2 × 2 = 4 units

Now, using Pythagoras theorem in ∆ BCD

DB² = DC² + BC²

plug the values

${4}^{2} = {a}^{2} + {a}^{2}$

Collect like terms

${4}^{2} = 2 {a}^{2}$

Evaluate the power

$16 = 2 {a}^{2}$

Swipe the side of the equation

$2 {a}^{2} = 16$

Divide both sides of the equation by 2

$\frac{2 {a}^{2} }{ 2 } = \frac{16}{2}$

Calculate

${a}^{2} = 8$

Therefore, The area of the square is 8 sq.units.

Hope this helps..

Best regards!!

3 0

3 years ago

Find the volume of a cylinder with a radius of 2 and a length of 9

Brrunno [24]

Answer:

V = pi 36 units^3

V =113.04 units^3

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2 h

V = pi ( 2) ^2 *9

V = pi 36

Letting pi = 3.14

V =113.04

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3 years ago

Which of the following is not a geometric sequence?

Leviafan [203]

A.

Because in mathematics, a geometric progression, also known as a geometric sequence, is a sequence of non-zero numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.

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3 years ago

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Gala2k [10]

Answer:

divide 47.12 by 3.14

Step-by-step explanation:

that way it will give you an answe

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3 years ago