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erastovalidia [21]
3 years ago
14

The heights of two elevators can be modelled by linear functions. At time t = 0, Elevator A is 16 feet above ground floor. It de

scends at a rate of 4 feet per minute. The height of Elevator B is shown in the graph. Select all true statements.
Elevator B graph of a diagonal line on a coordinate plane going down and to the right with Time in minutes on the x axis and height in feet on the y axis. The line begins at the point zero comma 16 and passes through the point 2 comma 10.

Select all True Statements.

The initial height of Elevator A is less than the initial height of Elevator B.

Elevator A descends at a faster rate than Elevator B.

Elevator A will reach the ground first.

Elevator B will reach the ground first.

The initial height of Elevator B is less than the initial height of Elevator A.
Mathematics
2 answers:
allochka39001 [22]3 years ago
7 0
Euurudid 82828828282 and yes no 2 x7 8
Tomtit [17]3 years ago
6 0

Answer:

B

Step-by-step explanation:

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Ruth has 7 more brown pencils than blue pencils, and 11 more blue pencils than red pencils. She has 5 red pencils. How many brow
olya-2409 [2.1K]

Answer: There are 5 red pencils, 16 blue pencils and 23 brown pencils.

Step-by-step explanation:

Since we have given that

Number of red pencils = 5

Number of blue pencils are 11 more than red pencils.

So, Number of blue pencils would be

11+5=16

Number of brown pencils are 7 more than blue pencils.

So, number of brown pencils would be

16+7=23

Hence, there are 5 red pencils, 16 blue pencils and 23 brown pencils.

8 0
3 years ago
A large but sparsely populated county has two small hospitals, one at the south end of the county and one at the north end. The
Readme [11.4K]

Answer:

Step-by-step explanation:

Probability distribution of this type is a vicariate distribution because it specifies two random variable X and Y. We represent the probability X takes x and Y takes y by

f(x,y) = P((X=x,Y=y) ,

and given that the random variables are independent the joint pmf isbgiven by:

f(x,y) = fX(x) .fY(y) and this gives the table (see attachment)

(b) the required probability is given by considering X=0,1 and Y =0,1

f(x,y) = sum{(P(X ≤ 1, Y ≤ 1) }

= [0.1 +0.2 ] × [0.1 + 0.3]

= 0.3 × 0.4

= 0.12

Now we find

fX(x) = sum{[f(x.y)]} for y =0, 1 and similarly for fY(y)= sum{[f(x,y)]} for x=0, 1

fX(x) = sum{[f(x,y)]}= 0.1+0.3

= 0.4

fY(y) = sum{[f(x.y)]} = 0.1 + 0.2

= 0.3

Since fY(y) × fX(x) = 0.4 × 0.3

= 0.12

Hence f(x,y) = fX(x) .fY(y), the events are independent

(c) the required event is give by: [P(X<=1, PY<=1)]

= P(X<=1) . P(Y<=1)

= [sum{[f(x.y]} over Y=0,1] × [sum{[f(x.y)]}, over X= 0, 1

= 0.4 × 0.3

= 0.12

(d) the required event is given by the idea that: either The South has no bed and the North has or the the North has no bed and the South has. Let this event be A

A =sum[(P(X = 1<= x<= 4, Y =0)] + sum[P(X =0 Y= 1 <= x <= 3)]

A = [0.02 + 0.03 + 0.02 + 0.02] + [0.03 + 0.04 + 0.02]

A = [0.09] + [ 0.09]

A = 0.18

Pls note the sum of the vertical column X=2 is 0.3

3 0
3 years ago
What value of x makes this equation true? 2/3x - 5 = 1/6x + 3​
Pepsi [2]

Answer:

x=16

Step-by-step explanation:

4 0
2 years ago
What is the value of a in the equation 3 a plus b equals 54, when b equals 9?
NikAS [45]

Answer:

a = 15

Step-by-step explanation:

Given

3a + b = 54 ← substitute b = 9

3a + 9 = 54 ( subtract 9 from both sides )

3a = 45 ( divide both sides by 3 )

a = 15

5 0
3 years ago
Read 2 more answers
Thanks! praise u if u answer
lakkis [162]
B I think hopes this helps
7 0
3 years ago
Read 2 more answers
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