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Tems11 [23]
3 years ago
11

Help me please im timed

Mathematics
1 answer:
aleksklad [387]3 years ago
5 0

Answer:

Option No. 1

Step-by-step explanation:

Given

√(-108)- √(-3)

Let’s solve both terms one by one

√(-108)= √(36(-3) )

Using the property for √(36(-3) )

√ab= √a* √b

= √36* √(-3)

=6√((3)(-1) )

Using the same property again for √((3)(-1) )

√ab= √a* √b

=6* √3* √(-1)

=6√3 i

As we know that √(-1)=i

So,

√(-108)=6√3 i

Now,

√(-3)= √3* √(-1)

= √3 i

Putting the equivalents in original expression

√(-108)- √(-3)=6√3 i-  √3 i

=5√3 i

So option 1 is the correct answer ..

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A bag contains 4 red marbles, 7 blue marbles and 8 green marbles. If two marbles are drawn out of the bag, what is the probabili
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What is the radius of a circle with an area of 113.04 cubic inches? Use 3.14 for pi. Enter your answer in the box. in.
gizmo_the_mogwai [7]

Answer:

6 inches.  

Step-by-step explanation:

We have been given that area of a circle is 113.04 cubic inches and we are asked to find the radius of the circle.

We will use area of circle formula to find the radius of our circle.

\text{Area of circle}=\pi r^2

Upon substituting the area of given circle we will get,

113.04=\pi r^2

Substituting \pi=3.14 we will get,

113.04=3.14*r^2  

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4 0
3 years ago
Find the x-intercept of the line 2x + 5y = 20.
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Answer:

Step-by-step explanation:

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3 0
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Read 2 more answers
Which conversions from scientific notation to standard notation are true? Select the four correct answers
bogdanovich [222]

The options are missing, so i have attached them.

Answer:

options B, E, G & H are correct.

Step-by-step explanation:

A) We are given;

1.71 × 10³ = 0.00171

For this conversion, the exponent attached to 10 is positive. This means we will have to move the decimal point to the right of 1.71 three times because the exponent is 3.

Thus, the proper conversion is;

1.71 × 10³ = 1710

B) We are given;

8.05 × 10^(5) = 805000

For this conversion, the exponent attached to 10 is positive. This means we will have to move the decimal point five times to the right of 8.05 because the exponent is 5.

Thus, the proper conversion is;

8.05 × 10^(5) = 805000

C) We are given;

2.4 × 10⁴ = -24000

For this conversion, the exponent attached to 10 is positive. This means we will have to move the decimal point four times to the right of 2.4 because the exponent is 4.

Thus, the proper conversion is;

2.4 × 10⁴ = 24000

D) We are given;

8.25 × 10^(-3) = -8250

For this conversion, the exponent attached to 10 is negative. This means we will have to move the decimal point three times to the left of 8.25 because the exponent is -3.

Thus, the proper conversion is;

8.25 × 10^(-3) = 0.00825

E) We are given;

7.09 × 10^(-6) = 0.00000709

For this conversion, the exponent attached to 10 is negative. This means we will have to move the decimal point six times to the left of 7.09 because the exponent is -6.

Thus, the proper conversion is;

7.09 × 10^(-6) = 0.00000709

F) We are given;

3.99 × 10^(5) = 300,099

For this conversion, the exponent attached to 10 is positive. This means we will have to move the decimal point five times to the right of 3.99 because the exponent is 5.

Thus, the proper conversion is;

3.99 × 10^(5) = 399,000

G)We are given;

8 × 10^(7) = 80,000,000

For this conversion, the exponent attached to 10 is positive. This means we will have to move the decimal point seven times to the right of 8 because the exponent is 7.

Thus, the proper conversion is;

8 × 10^(7) = 80,000,000

H) We are given;

1.03 × 10^(-4) = 0.000103

For this conversion, the exponent attached to 10 is negative. This means we will have to move the decimal point four times to the left of 1.03 because the exponent is -4.

Thus, the proper conversion is;

1.03 × 10^(-4) = 0.000103

Looking at all the options as well as the proof I got, only options B, E, G & H are correct.

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