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RoseWind [281]
3 years ago
8

The force of gravity is less on Mars than it is on Earth. As a result, the weight of an object on Mars m is 40% of its weight on

Earth w. Determine which function you would use to find the weight on Mars of a space probe that weighs 15 lb on Earth. Then find the objects weight on Mars.
Mathematics
2 answers:
cestrela7 [59]3 years ago
3 0
If the weight of <span>an object on Mars (m) is 40% of its weight on Earth(w), then our equation would be:

m = 0.4w

<u>Space probe:</u>
m = 0.4(15)
m = 6 lb</span>
sladkih [1.3K]3 years ago
3 0
The general function is y =0.4.(x), where:

y = the weight on Mars
x = the weight on earth
and 0.4 a coefficient (given = 40% = 0.4)

Now if x = 15lb then on mars it weights y = 0.4.(15) = 6 lb

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There are seven roads that lead to the top of a hill. How many different ways are there to reach the top and to get back down, i
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Given are the seven roads (say A, B, C, D, E, F, and G) that lead to the top of a hill. We need to select a road to reach the top and then it says to select different road to get back down.

First of all, we can select any one road from seven roads. So, we have 7 ways to go to the top.

After reaching the top, this first road gets eliminated from selection and now we have only Six roads to come downhill. So, we have 6 ways to get back down.

So, total number of ways = 7 × 6 = 42 ways.

So, there are 42 different ways are there to reach the top and to get back down, if the uphill and downhill roads are different.

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Conditional Probability:
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The anwser is 1/4 or 25% or .25
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if a car travels at a speed of 25mi/h for t hours, then travels 45mi/h for m hours, what does the expression 25t+45m represent?
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A duck swims at a speed of 1 meter per second. How long does it take for it to cross a 50 meter wide pond?
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Step-by-step explanation:

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Which points lie on the line whose equation is 8x - 2y + 7 = -9? Select all that apply.
Anestetic [448]

Answer:

A.(-2, 0)

C. (-1.4)

Step-by-step explanation:

we know that

If a point lie on the line, then the point must satisfy the equation of the line (makes the equation true)

we have

8x-2y+7=-9

subtract 7 both sides

8x-2y=-9-7

8x-2y=-16

divide by 2 both sides

4x-y=-8

Substitute the value of x and the value of y of each point in the linear equation and analyze the result

<u><em>Verify each point</em></u>

case A) we have

(-2, 0)

For x=-2, y=0

substitute

4(-2)-(0)=-8

-8=-8 ---> is true

so

the point lie on the line

case B) we have

(1, 3)

For x=1, y=3

substitute

4(1)-(3)=-8

1=-8 ---> is not true

so

the point not lie on the line

case C) we have

(-1, 4)

For x=-1, y=4

substitute

4(-1)-(4)=-8

-8=-8 ---> is true

so

the point lie on the line

case D) we have

(1, -4)

For x=1, y=-4

substitute

4(1)-(-4)=-8

8=-8 ---> is not true

so

the point not lie on the line

case E) we have

(0, -1)

For x=0, y=-1

substitute

4(0)-(-1)=-8

1=-8 ---> is not true

so

the point not lie on the line

7 0
3 years ago
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