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3 years ago

a bus trip covers 191 km and takes 4 hours and 15 minutes, what is the average speed of the bus in kilometers per hour

Mathematics

1 answer:

umka21 [38]3 years ago

6 0

Answer: 44,94 km/h

Step-by-step explanation: 15 minutes is a quarter of hour. So we can write 4h + (1/4)h = 17/4 = 4,25 h.

As the average speed is calculated dividing distance by time, the result is 191/ 4,25 = 44,94 km/h.

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4-(3x+3)=4x

Pavlova-9 [17]

Answer:

4-(3x+3)=4x

4-3x-3=4x

4-3=4x+3x

1=7x

x=1/7

4-(3x+3)=4x

4-3x-3=4x

-3x-4x=-4+3

-7x=-1

x=-1/-7

-/-=+

so -1/-7 it equal to 1/7

you dont want negative x

x=1/7

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2 years ago

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A manufacturer produces 25-pound lifting weights. The lowest actual weight is 24 pounds, and the highest is 26 pounds. Each weig

stealth61 [152]

Answer:

0.45

Step-by-step explanation:

For a uniform distribution,

$f(x) = \frac{1}{b - a} \\$

where a is the minimum and b the maximum\\

cumulatively, $F(x) = \frac{x - a}{b -a}$

$F(x >= 24.9) = \frac{24.9 - 24}{26 - 24} = \frac{0.9}{2} = 0.45$

6 0

3 years ago

The figure shows the movement of a pedestrian as she walks from point B to point E. Write a formula for function d(t) for each s

levacccp [35]

Answer:

crxr utcug UFC tvuyvuyv tvuycrcfgvugvihtc

Step-by-step explanation:

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2 years ago

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Answer these questions please I'm really desperate. please im going to fail if I dont get this right

Drupady [299]

<u>Answer-</u>

$g(x)=-3x$

<u>Solution</u>-

First of all we have to get the value of f, as two point (0, -1) and (1, 2), we can get the equation by applying two point formula of straight line.

$\Rightarrow \dfrac{y-y_1}{y_2-y_1}=\dfrac{x-x_1}{x_2-x_1}$

$\Rightarrow \dfrac{y+1}{2+1}=\dfrac{x-0}{1-0}$

$\Rightarrow \dfrac{y+1}{3}=\dfrac{x}{1}$

$\Rightarrow \dfrac{y+1}{3}=x$

$\Rightarrow {y+1}=3x$

$\Rightarrow y=3x-1$

$\Rightarrow f(x)=3x-1$

Translating any point with coordinate as (x,y) 1 unit down, becomes (x, y-1)

So the new function will be,

$\Rightarrow (y-1)=3x-1$

$\Rightarrow y=3x$

Reflecting any point with coordinate as (x,y) over x axis, becomes (x, -y)

So the new function will be,

$\Rightarrow -y=3x$

$\Rightarrow y=-3x$

$\Rightarrow g(x)=-3x$

3 0

3 years ago

(b) Suppose oil spills from a ruptured tanker and spreads in a circular pattern. If the radius of the oil spill increases at a c

stira [4]

Answer:

66π m²/s ≈ 207.3 m²/s

Step-by-step explanation:

The area is given by ...

A = πr²

and its rate of change is given by ...

A' = 2πr·r'

Filling in the given values, we have ...

A' = 2π(33 m)(1 m/2) = 66π m²/s ≈ 207.3 m²/s

The area of the spill is increasing at the rate of 66π m²/s ≈ 207.3 m²/s.

8 0

3 years ago