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nata0808 [166]
3 years ago
12

0.003876 to 2 significant figures​

Mathematics
1 answer:
kvasek [131]3 years ago
3 0

Answer:

Step-by-step explanation:

0.0039

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The figure below shows a rope that circles the Earth. The radius of the Earth is 637163716371 kilometers. Assuming the rope make
lutik1710 [3]
The length of the rope for this case is given by the length of the circumference.
 We have then:
 C = 2 * pi * R
 Where,
 R: Earth radio.
 We have then:
 C = 2 * pi * (6371)
 C = 12742 * pi
 Answer:
 the length of this rope is:
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6 0
4 years ago
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Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real
garik1379 [7]

The complete question is

"Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real number solutions? (The related quadratic function will have two x-intercepts.) Check all that apply.

0 = 2x^2 – 7x – 9

0 = 4x^ 2 – 3x – 1

The quadratic equations that have real number solutions are; 4x^2 – 3x – 1, and 2x^2 – 7x – 9.

<h3>What is the formula for Discriminant?</h3>

The formula for finding the discriminant is

b^2 - 4ac

The solution contains the term \sqrt{b^2 - 4ac} which will be:

Real and distinct if the discriminant is positive

Real and equal if the discriminant is 0

Non-real and distinct roots if the discriminant is negative

For the quadratic equation 2x^2 - 7x - 9

b^2 - 4ac

= (-7) ^2 - 4( 2) ( -9)\\\\= 49 + 72 = 121

This equation has two real number solutions.

For the quadratic equation 4x^ 2 - 3x- 1

b^2 - 4ac

= (-3) ^2 - 4( 4) ( -1)\\\\= 9 + 16 = 25

This equation will have two real number solutions.

Learn more on discriminant here:

brainly.com/question/1537997

#SPJ1

5 0
2 years ago
2(1/2q+1)=-3(2q-1)+4(2q+1)
babymother [125]
1q+2=-6q+3+8q+4
1q+2=2q+7
<span>-2q    -2q
</span>-q+2=7
<span>    -2 -2
</span>-q=<span>5
-1  -1
q=-5
</span>

6 0
3 years ago
Given m||n, find the value of x.<br> Please help with this one too this is hard
4vir4ik [10]

Answer:

111°

Step-by-step explanation:

The two angles are alternate exterior angles, and those types of angles are always congruent if there are parallel lines.

5 0
3 years ago
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What is the solution to 1.6m-4.8m=-1.6m?
Aleksandr [31]

Answer:

m=0

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

7 0
3 years ago
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