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2 years ago

1) Give an equation for the line which goes through (1,-5) and has slope m=-3.

Mathematics

1 answer:

defon2 years ago

7 0

Answer:

$y=-3x-2$

Step-by-step explanation:

Using $y-y_1=m(x-x_1)$ :

$y--5=-3(x-1)$

⇒ $y=-3x-2$

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weqwewe [10]

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8 0

3 years ago

SSSSS [86.1K]

Answer:

Expected number of hours before the the group exits the building = E[Number of hours] = 3.2 hours

Step-by-step explanation:

Expected value, E(X) is given as

E(X) = Σ xᵢpᵢ

xᵢ = each variable

pᵢ = probability of each variable

Let X represent the number of hours before exiting the building taking each door. Note that D = Door

D | X | P(X)

1 | 3.0 | 0.2

2 | 3.5 | 0.1

3 | 5.0 | 0.2

4 | 2.5 | 0.5

E(X) = (3×0.2) + (3.5×0.1) + (5×0.2) + (2.5×0.5) = 3.2 hours

Hope this Helps!!!

7 0

2 years ago

Use the graph to solve the given system of equations, x-3y=-3 x+y=5

sweet [91]

Answer:

x=3

y=2

Step-by-step explanation:

3 0

3 years ago

The distance an airplane travels depends on how much time it spends flying. Which expression represents the distance the airplan

kogti [31]

Answer: B. $\text{Distance(20)}$

Step-by-step explanation:

The notation to express a dependent variable is given by :-

$Y(x)$ , where Y is depending variable which is dependent upon x ( independent variable).

The given statement : The distance an airplane travels depends on how much time it spends flying.

Here , Independent variable : Time

Dependent variable : Distance

Then , the notation to express distance (dependent variable) the airplane flies in 20 minutes is given by :-

$\text{Distance(20)}$

6 0

3 years ago

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uysha [10]

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3 years ago