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vampirchik [111]
4 years ago
9

Solve the equation: only write the number is the box 2( 5x+2)=54

Mathematics
1 answer:
aivan3 [116]4 years ago
4 0
Answer: x = 5

Explanation:

2(5x + 2) = 54
10x + 4 = 54
10x = 54 - 4
10x = 50
x = 50/10
x = 5

Therefore, x = 5
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eimsori [14]

Answer:

(a)

  • The vertices are at (0,-5) and (0,5).
  • The coordinates of the foci are (0,-3) and (0,3).
  • Eccentricity=3/5

(b)Length of the major axis=10

Step-by-step explanation:

When the major axis of an ellipse is parallel to the y-axis.The standard form of the equation of an ellipse is given as:

\dfrac{x^2}{b^2}+\dfrac{y^2}{a^2}=1

Given the equation:

\dfrac{x^2}{16}+\dfrac{y^2}{25}=1

(I)The coordinates of the vertices are (0, \pm a)

a^2=25\\a^2=5^2\\a=5

Therefore, the vertices are at (0,-5) and (0,5).

(II)The coordinates of the foci are (0, \pm c)$ where c^2=a^2-b^2

c^2=a^2-b^2\\c^2=25-16\\c^2=9\\c=3

The coordinates of the foci are (0,-3) and (0,3).

(III)Eccentricity

This is the ratio of the distance c between the center of the ellipse and each focus to the length of the semi major axis.

Simply put, Eccentricity =c/a

Eccentricity=3/5

(b)Length of the major axis

The length of the major axis=2a

=2(5)=10.

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3 years ago
Find the value of x.
riadik2000 [5.3K]
We know that both lines will be equivalent, so to solve for x we can equate the two expressions
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We will then divide both sides by 3
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3/4x69.08=51.81.

However, you add the 11+11 to it because of the slice.

22+51.81=73.81

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1.5 is the correct answer :)
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