All categories

1 year ago

tim drives at an average speed of 80km per hour for 3 hours 45 minutes work out how many kilometres tim drives

Mathematics

1 answer:

krek1111 [17]1 year ago

4 0

Speed = distance / time
3 hours 45 minutes = 3.75 hours
80 = distance / 3.75

distance = 80 * 3.75 = 300 kms Answer

You might be interested in

An entrepreneur estimates his total profit (total revenue minus total cost) for his proposed company as p(x) = x3 − 4x2 + 5x − 2

RideAnS [48]

Answer:

Year in which the entrepreneur break even is 4

Step-by-step explanation:

We are given:

p(x) = x^3-4x^2+5x-20

We would find the value of x

Solving:

x^3-4x^2+5x-20 = 0

(x^3-4x^2)+(5x-20) = 0

x^2(x-4)+5(x-4) = 0

(x-4)(x^2+5)=0

=> x-4 = 0 and x^2+5 =0

x = 4 and x^2 = -5

x = 4 and x = ±√-5 or ±√5 i (not real solutions)

So, x = 4

So, year in which the entrepreneur break even is 4

4 0

1 year ago

How is 90,040 written in expanded form

ycow [4]

Answer:

9×10,000+4×10 eauals to 90,040

8 0

2 years ago

Read 2 more answers

PLZ HELP! Oliver is 8 feet above the surface of the water. There is a school of fish 10 feet below the surface. A ledge with som

qwelly [4]

Answer:

26 feet, Oliver will have to travel 26 feet deep.

Step-by-step explanation:

8 feet added to 18 feet will be your answer.

8 0

1 year ago

Approximate the area under the curve y = x² from x = 2 to x = 5 using a Right Endpoint approximation with 6 subdivisions.

Tanzania [10]

Answer:

$\text{Area}\,=36.75$

Step-by-step explanation:

Using right estimation point simply means to form a bunch of rectangles between the two limits, x =2 and x = 5. and add the areas of all those rectangles.

There must be 6 subdivisions between 2 and 5. so, to do that:

$\Delta{x}=\dfrac{5-2}{6}=0.5$

the length of each subdivision is 0.5 units. That also means that the 6 rectangles in between the limits will each have the base length of 0.5 units.

So the endpoints of each subdivision from 3 to 5 will be:

$\begin{tabular}{|c|c|c|c|c|}3&3.5&4&4.5&5\\\end{tabular}$

By right endpoint approx, we mean that the height of the rectangles will be determined by the right endpoint of each subdivision, that is, it must be equal to the function value of the first limit.

$\begin{tabular}{|c|c|c|}subdivision&$x$&height($y=x^2$)&3 to 3.5&3.5&12.25&3.5 to 4&4&16&4 to 4.5&4.5&20.25&4.5 to 5&5&25\end$

Note that we have used the right-end-point of the subdivision to determine the height the rectangles.

All that's left to do now is to simply calculate the areas of the each of the rectangles. And add them up.

the base of each of the rectangle is $\Delta{x}=0.5$

and the height is determined in the table above.

$\text{Area}\,=(0.5\times12.25)+(0.5\times16)+(0.5\times20.25)+(0.5\times25)$

$\text{Area}\,=0.5(12.25+16+20.25+25)$

$\text{Area}\,=36.75$

3 0

2 years ago

Angle ABC has point E on ray BA and point D on ray BC. Points E and D are equidistant from point B. To copy angle ABC, which of

alexandr402 [8]

Answer:

The distance between points E and D ⇒ 1st answer

Step-by-step explanation:

* Lets revise the steps of copy an angle

- Copy angle ABC

Step 1. Draw an arc centered at B and intersecting the rays of the

angle at A and C.

Step 2. On the line that we will copy the angle on it, draw an arc of

the same distance centered at B' intersecting the line at A'

Step 3. Use the compass to measure the distance from A to C, and

with the compass centered at A' scribe an arc whose radius is the

distance from A to C intersecting the arc from Step 2 at C'.

Step 4. Draw the line from B' through C'.

* Lets solve the problem

- Angle ABC has point E on ray BA and point D on ray BC

- Points E and D are equidistant from point B

- To copy angle ABC the step needs to identified for the construction is

The distance between points E and D

6 0

1 year ago