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Alisiya [41]
2 years ago
11

3+(-2)-(-3)-(5)+(-1)-(-7)=

Mathematics
1 answer:
Lerok [7]2 years ago
6 0

Answer:

-1

Step-by-step explanation:

did math on caculator

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Identify the ellipses, represented by equations, whose eccentricities are less than 0.5
ozzi

Answer:

See explanation

Step-by-step explanation:

Hello, we cannot see the ellipse equations.

The eccentric of an ellipse is given by:

e =  \frac{c}{a}

Assuming the equations are:

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

Then a²=25 and b²=16

{c}^{2}  =  {a}^{2}  -  {b}^{2}

{c}^{2}  = 25 - 16

{c}^{2}  =  {3}^{2}

c = 3

The eccentricity is:

e =  \frac{3}{5}  = 0.6

If the ellipse has equation,

\frac{ {x}^{2} }{ {5}^{2} }  +  \frac{ {y}^{2} }{ {3}^{2} }  = 1

then the this time, we have a=5 and b=3.

This means that:

{c}^{2}  =  {a}^{2}  -  {b}^{2}

{c}^{2}  =  {5}^{2}  -  {3}^{2}

{c}^{2}  =  {4}^{2}

c = 4

c =  \frac{4}{5}  = 0.8

3 0
3 years ago
Read 2 more answers
2x-3y=32<br> 1/2(2X+3y)=-8
Alex787 [66]

Answer:

x=4  :y=-8

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2 years ago
Which of the following statements is true?. . A.A tangent is never a secant.. B.A secant is always a chord.. C.A chord is always
skelet666 [1.2K]

The <em>correct answer</em> is:

A) A tangent is never a secant.

Explanation:

A tangent is a line that touches a circle in exactly one point. A secant is a line that touches a circle in two different points.

Since a tangent only touches once and a secant touches twice, there is no way a tangent can be a secant.

3 0
3 years ago
What is the area in square feet of a triangle with a height of 4.5 and base of 6.6
Andrew [12]

Answer:

14.85

Step-by-step explanation:

The area of a triangle is given by

A = 1/2 bh where b is the base and h is the height

A =1/2 ( 6.6)(4.5)

A = 14.85

4 0
2 years ago
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Translate the sentence into an equation.
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Twice (2 times) the difference (subtraction) of a number (y) and 7 equals 3.

2*(y-7) = 3

hope this helps :)
4 0
3 years ago
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