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3 years ago

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" title="d=\sqrt{x} (1-(-5)x^{2} + (-5-3)x^{2}" alt="d=\sqrt{x} (1-(-5)x^{2} + (-5-3)x^{2}" align="absmiddle" class="latex-formula">

1 answer:

aleksandr82 [10.1K]3 years ago

3 0

Bro i don’t know either

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Satellites can be put into elliptical orbits if they need only sometimes to be in high- or low-earth orbit, thus avoiding the ne

tatyana61 [14]

Answer:

a) $\frac{x^2}{4446^2}+\frac{y^2}{4420^2}=1$

b) Highest Altitude = 486 miles

Lowest Altitude = 460 miles

Step-by-step explanation:

a)

The standard form of equation of ellipse is:

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

If a > b, then the major axis is horizontal.

If a < b, then the major axis is vertical.

Now, given:

a = 4446

b = 4420

We can write the equation of the ellipse as:

$\frac{x^2}{a^2}+\frac{y^2}{b^2}=1\\\frac{x^2}{4446^2}+\frac{y^2}{4420^2}=1$

This is the equation, centered at origin.

b)

Since a > b, we can say that the major axis is horizontal and minor axis is vertical.

So, it stretches:

4446 miles from the center of the earth towards both -x and +x axis

and

4420 miles from the center of the earth towards both -y and +y axis

Since, the radius of the earth is 3960 miles, it means from center to earth's surface in all sides is 3960 miles.

The highest and lowest point altitude will be the different in x and y axis (horizontal and vertical) of the point with orbit of the satellite.

4446 - 3960 = 486 miles

and

4420 - 3960 = 460 miles

Thus,

<u>Highest Altitude = 486 miles</u>

<u>Lowest Altitude = 460 miles</u>

8 0

3 years ago

hat is the rectilinear distance betweenâ€‹ (âˆ’3, âˆ’6) andâ€‹ (14, âˆ’2)? A. 3 B. 21 C. 25 D. 18.79 E. 7 F. 15

Fofino [41]

Answer:

F. 15

Step-by-step explanation:

To obtain the rectilinear distance between :

(3, 6) and (14, 2)

x1 = 3 ; x2 = 14 ; y1 = 6 ; y2 = 2

(3, 6), (14, 2)

USing the Rectilinear distance formula :

|X2 - x1 | + |y2 - y1 |

| 14 - 3 | + |2 - 6 |

|11 | + |- 4 |

11 + 4

= 15

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3 years ago

Andres used 3 pears and 9 apples to make a fruit salad. What ratio represents the number of pears to the number of apples in the

jenyasd209 [6]

Answer: 3 pears: 12 combined apples and pears for total number of fruit in the salad

Step-by-step explanation:

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3 years ago

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For what value of x is the equation -3x + 7 = -17 true?

elena-s [515]

the answer is x=8

-3(8)= -24

-24+7=-17

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3 years ago

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The difference between the number of customers in line at the express checkout and the number in line at the superexpress checko

icang [17]

The table is:0 1 2 3

x1 0 0.08 0.06 0.04 0.00

1 0.05 0.18 0.05 0.03

2 0.05 0.04 0.10 0.06

3 0.00 0.03 0.04 0.07

4 0.00 0.01 0.05 0.06

Expected difference =
+(0.08*(0-0)) +(0.06*(0-1)) +(0.04*(0-2)) +(0.00*(0-3)) +(0.05*(1-0)) +(0.18*(1-1)) +(0.05*(1-2)) +(0.03*(1-3)) +(0.05*(2-0)) +(0.04*(2-1)) +(0.10*(2-2)) +(0.06*(2-3)) +(0.00*(3-0)) +(0.03*(3-1)) +(0.04*(3-2)) +(0.07*(3-3)) +(0.00*(4-0)) +(0.01*(4-1)) +(0.05*(4-2)) +(0.06*(4-3))
= 0.17

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3 years ago