11. If a motorist travels 100km in 2'/2
hours, what is his average speed in
km per hour?​

Answers

Answer 1
Answer:

= 40km/hours

Explanation:

Distance traveled: 100km

Time taken: 2 1/2 or (2.5) hours

Average speed:

100/2.5 = 40
Answer 2

The average speed in km per hour is 40 km/hour if a motorist travels 100km in 2 1/2 hours the answer is 40 km/hour.

What is the distance?

Distance is a numerical representation of the distance between two items or locations. Distance refers to a physical length or an approximation based on other physics or common usage considerations.

The complete question is:

If a motorist travels 100km in 2 1/2 hours, what is his average speed in

km per hour?​

We have:

The distance; a motorist travels  = 100 km

The time he takes = 2 1/2 hours

or

The time he takes = 5/2 hours

or

The time he takes = 2.5 hours

The average speed in km per hour = distance/time

The average speed in km per hour = 100/2.5

The average speed in km per hour = 40 km/hour

Thus, the average speed in km per hour is 40 km/hour if a motorist travels 100km in 2 1/2 hours the answer is 40 km/hour.

Learn more about the distance here:

brainly.com/question/26711747

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Related Questions

Pls help with right answers

Answers

Answer:

Ava gives each cat 2 treats. 3 treats are left.

Step-by-step explanation:

15/6 = 2.5

If she wants to split them evenly then she can only give each cat 2 treats. so 2 x 6 = 12 which means that there are 3 treats left

Answer:

She will give 2 cat treats to each cat, with 3 cat treats remaining.

Step-by-step explanation:

Alright, it wants us to find what 15 divided by is is with the remainder.

6 goes into 15,  2 times, resulting in 12.

15 - 12 = 3

This means that she will give 2 cat treats to each cat, with 3 cat treats remaining.

I Hope this Helps!

Have a Great Day (because some other kid tried to ruin mine, but I won't let it affect me)!

Theo wants to find the surface area and volume of a present he received

Answers

Answer:

So whats the question then ????

What is the fourth term in a sequence defined by f(n) = 2n?

Answers

Answer:

8

Step-by-step explanation:

When we look at sequences, we have the function and we have the sequence, the sequence is f(x)... f(n)... or just f with any variable within a parenthesis right next to it.

What the variable signifies is the value that we will be replaced within the sequence, which is 2n in this case. So by your question, it we are looking for the fourth term, that means f(4) = 2n.  Since n is replaced with 4, we do the same with the sequence.

2(4)

Multiply

8

+87 points and guaranteed brainliest if you get it right :)
If 14x + 6 / 3 = -8 + 4x, what is the value of -3x^2 - 7? TYSM

Answers

the answer should be -10

3
3. Write an expression that is equivalent to
5
(3y + 15). (4 points)
O 3
-y + 9
5
03
-y + 15
5
09
5
Y + 9
09
- y + 15
5

Answers

Answer:

9/5y+15

Step-by-step explanation:

what is 1 plus 1000000000

Answers

1000000001 because 1000000000 + 1 = 1000000001.

Answer:

1000000001

Step-by-step explanation:

Thanks for some free answer points! :)

Need help asap
Graph f(x) = 3x + 4 and h(x) = f(x) +1

Answers

So we have f(x)= 3x+4 and h(x) is f(x)+1 so you would have (3x+4)+1 which is 3x+5 so h(x) is 3x+5

The coordinate points to plot on the graph are (0, 5) and (1, 8). The graph for the given functions are plotted below.

The given functions are f(x) = 3x + 4 and h(x) = f(x) +1.

What is the function?

Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

Here, h(x)=3x+5

The graph of f(x) = 3x + 4 is as follows:

Graph the line using the slope and y-intercept, or two points.

Slope: 3

y-intercept: (0, 4)

The coordinate points to plot on the graph are (0, 4) and (1, 7)

The graph of h(x)=3x+5 is as follows:

Graph the line using the slope and y-intercept, or two points.

Slope: 3

y-intercept: (0, 5)

The coordinate points to plot on the graph are (0, 5) and (1, 8)

The coordinate points to plot on the graph are (0, 5) and (1, 8). The graph for the given functions are plotted below.

To learn more about the function visit:

https://brainly.com/question/28303908.

#SPJ2

I need help with this.

Answers

Answer:

C

Step-by-step explanation:

(-2,4) means that it excludes the numbers -2 and 4 from the set, but includes all the numbers in between -2 and 4!

A. this equals 4, so that's eliminated.

B. this equals -2, eliminated as well.

C. this equals 0.01! Which is in the set!

D. this equals 9.8696, WAY over 4!

The answer is C!

(side note, (-2,4) excludes -2 and 4, while [-2,4] includes -2 and 4. You can mix and match also! (-2,4] would exclude -2 but include 4, for example)

help please : (

convert 10.0 cm into in​

Answers

Answer:

3.93700787 Inch

Step-by-step explanation:

:)

Answer:

3.93701

Step-by-step explanation:

In order to convert cm into inches you divide the cm by 2.54.

Help I don’t understand this

Answers

Answer:

y = 12.5

Step-by-step explanation:

Notice these are similar triangles since they have angles of the same measure (congruent angles), then there must be a proportion among their sides such that:

[tex]\frac{y+5}{5} =\frac{14}{4}[/tex]

therefore by cross-multiplying, we get:

4(y + 5) = 14 * 5

4 y + 20  = 70

4 y = 70 - 20

4 y = 50

y = 12.5

Write an expression to model the following situation: A submarine was 32 m below sea level. It descended 28 more meters.

What is its new position below sea level?

32 + 28


32 – 28

–32 + 28

–32 – 28

Answers

it would be -32-28 please mark brainliest

Pls help me out I really need help

Answers

Answer: -0.8

Step-by-step explanation:

What is the answer to
5 + 3 x 3x -2 X=2

Answers

Answer:

x = 1/6

Step-by-step explanation:

If start fraction 1 over 3 end fraction is equivalent to 33start fraction 1 over 3 end fraction%, what percent is equivalent to two-thirds? A. 33two-thirds% B. 150% C. 66two-thirds% D. 65%

Answers

Answer:

The answer is C 66%

Step-by-step explanation:

At a school party there are 40 cookies. The ratio of chocolate cookies to oatmeal cookies is shown in the tape diagram.

Answers

There is no tape diagram edit and put it in so I can answer, thank you.

If I were at the party. I would eat all the chocolate chip cookies

1. Determine the intervals on which each function is increasing or
decreasing
(a) f(x) = x^3 - 11/2x^2 - 4x

Answers

Answer:

[tex]\text{$f(x)$ is increasing for $(-\infty, -\frac{1}{3})$ and $(4, \infty)$} \\ \text{$f(x)$ is decreasing for $(-\frac{1}{3}, 4)$}[/tex]

Step-by-step explanation:

We have the function:

[tex]f(x)=x^3-\frac{11}{2}x^2-4x[/tex]

And we want to determine the intervals for which the function is increasing or decreasing.

We will need to first find the critical points of the function. Note that our original function is continuous across the entire x-axis.

To find the critical points, we need to find the first derivative and then solve for the x. So:

[tex]f^\prime(x)=\frac{d}{dx}[x^3-\frac{11}{2}x^2-4x][/tex]

Differentiate:

[tex]f^\prime(x)=(3x^2)-\frac{11}{2}(2x)-(4) \\ f^\prime(x)=3x^2-11x-4[/tex]

Set the derivative equal to 0 and solve for x:

[tex]0=3x^2-11x-4[/tex]

Factor:

[tex]0=3x^2-12x+x-4 \\ 0=3x(x-4)+(x-4) \\ 0=(3x+1)(x-4)[/tex]

Zero Product Property:

[tex]3x+1=0\text{ or } x-4=0 \\ x=-\frac{1}{3}\text{ or } x=4[/tex]

Therefore, our critical points are -1/3 and 4.

We can thus sketch the following number line:

<————-(-1/3)——————————————(4)—————>

Now, let’s test values for the three intervals: less than -1/3, between -1/3 and 4, and greater than 4.

For less then -1/3, we can use -1. So, substitute -1 for x for our first derivative and see which we get:

[tex]f^\prime(-1)=3(-1)^2-11(-1)-4=3+11-4=10>0[/tex]

The result is positive.

Therefore, for all numbers less than -1/3,f(x) is increasing (since its derivative is positive).

For between -1/3 and 4, we can use 0. Substitute 0 for our derivative:

[tex]f^\prime(0)=3(0)^2-11(0)-4=-4<0[/tex]

The result is negative.

Therefore, for all numbers between -1/3 and 4, f(x) is decreasing (since its derivative is negative).

And finally, for greater than 4, we can use 5:

[tex]f^\prime(5)=3(5)^2-11(5)-4=16>0[/tex]

The result is positive.

Therefore, for all numbers greater than 4, f(x) is increasing (since its derivative is positive.

Therefore:

[tex]\text{$f(x)$ is increasing for $x<-\frac{1}{3}$ and $x>4$}\\ \text{ $f(x)$ is decreasing for $-\frac{1}{3}<x<4$}[/tex]

In interval notation:

[tex]\text{$f(x)$ is increasing for $(-\infty, -\frac{1}{3})$ and $(4, \infty)$} \\ \text{$f(x)$ is decreasing for $(-\frac{1}{3}, 4)$}[/tex]

Determine the expression

Answers

trinomial and i believe its a degree of 4

Use separation of variables to find, if possible, product solutions for the given partial differential equation. (Use the separation constant −λ ≠ 0. If not possible, enter IMPOSSIBLE.)

k∂^2u/∂x^2 - u = ∂u/∂t, k>0

Answers

Answer:

Following are the solution to this question:

Step-by-step explanation:

differentail equation:

[tex]yu_{xy} + u = 0..........(1)[/tex]  

when [tex]u(x,y) = X(x)Y(y)[/tex]

[tex]u_x = \frac{\partial u}{\partial  x} X'Y' \\\\ u_{xy} = \frac{\partial^2 u }{ \partial x\ \partial  y}= X'Y'[/tex]

by substituting the value we get:

[tex]\to \int \frac{Y'}{Y} = -\lambda \int \frac{1}{y} dy\\\\[/tex]

by solving the value:

[tex]\to Y=c_3 y^{-\lambda}\\\\\therefore\ \ c_4=c_2C_3\\\\\to u(x,y) = c_4 e^{\frac{x}{\lambda}} y^{-\lambda}[/tex]

The solution of the given partial differential equation will be

[tex]u(x,y)=c_4e^\frac{x}{\lambda}y^{-\lambda}[/tex]

What is partial differential equation?

The partial derivative is a way to find the slope in either the x or y direction, at the point indicated.

[tex]yu_{xy}+u=0..............................(1)[/tex]

Now if [tex]u(x,y)=X(x)Y(y)[/tex]

[tex]u_x=\dfrac{\partial u}{\partial x} X'Y'[/tex]

[tex]u_{xy}=\dfrac{\partial^2u}{\partial x\ \partial y}=X'Y'[/tex]

by substituting the value, we get:

[tex]\int \dfrac{Y'}{Y}=-\lambda\int\dfrac{1}{y}dy[/tex]

by solving the value:

[tex]Y=c_3y^{-\lambda}[/tex]

[tex]c_4=c_2c_3[/tex]

[tex]u(x,y)=c_4e^\frac{x}{\lambda}y^{-\lambda}[/tex]

Hence the  solution of the given partial differential equation will be

[tex]u(x,y)=c_4e^\frac{x}{\lambda}y^{-\lambda}[/tex]

To know more about partial differential equation follow

https://brainly.com/question/2293382

What must be true in order for AABC = AEDC by the SAS Congruence Postulate?
PLEASE HELP <3

Answers

Answer:

B

Step-by-step explanation:

If ∠ + ∠ = 180° and ∠ ≅ ∠, what can you conclude about ∠ and ∠?

Answers

Answer:

both ∠=90

Step-by-step explanation:

180/2=90

A panel of 12 jurors needs to be selected from a group of 28 people. How many different compositions for the jury are possible?A. 479,001, 600.B. 18, 564.C. 41, 430, 393, 164, 160,000.D. 86, 493, 225.

Answers

Complete Question

A panel of 12 jurors needs to be selected from a group of 30  people. How many different compositions for the jury are possible?

A. 479,001, 600.

B. 18, 564.

C. 41, 430, 393, 164, 160,000.

D. 86, 493, 225.

Answer:

The correct option is D

Step-by-step explanation:

From the question we are told that

   The number of jurors to be selected is q = 12

   The total number of people available n =  30  

Generally the number of different compositions for the jury that is possible is mathematically represented as

         [tex]N = ^nC_q[/tex]

Here C stands for combination hence we are going to be making use of the combination function in our calculators  

        [tex]N = ^{30}C_{12}[/tex]

=>     [tex]N = 86,493,225[/tex]

Solve this equation for y.
3x - 5y = 12

Answers

Answer: y= 3/5x -12/5

Simplify: –6(2x – 5)


–12x – 30


–12x + 30


12x – 30


12x + 30

Answers

Answer: -12x + 30

Step-by-step explanation:

Answer:

the answer is b

Step-by-step explanation:

-6(2x-5)

-6(2x+5)

-6(2x) + 6(5)

-12x +30

A sign language club made $627.50 from selling popcorn at a festival. The popcorn cost the club $95.00. Which expression represents the amount of money that was raised for each member of the club? (Let the variable m be the number of members in the club.) (627.50 + 95) (m) (627.50 minus 95) (m) (627.50 minus 95) l m (627.50 + 95) l m

Answers

Answer:

option 3

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

help plz!!!! its urgent

Answers

2,3

1,1.5

maybe, hope this helps

Fill in the table using this function rule.
y=3x-1

Answers

Answer:

Step-by-step explanation:

y= 3(1)-1 --> y=2 (1,2)

y=3(5)-1 --> y=14 (5,14)

y=3(6)-1 --> y=17 (6,17)

y=3(8)-1 --> y=23 (8,23)

Q(9,10) R(-5,2) S(-8,-2) T(-1,2)

Answers

Need more than just this

Answer:

its perpendicular

Step-by-step explanation:

What’s the answer
5 3/7 - 2 1/5

Answers

Answer:3.22

Step-by-step explanation:

Hope this helps

See attachment for math work and answer.

Find the surface area of the square pyramid shown below.

Answers

9514 1404 393

Answer:

  160 units^2

Step-by-step explanation:

Each of the four triangular faces has an area of ...

  A = (1/2)bh = (1/2)(8)(6) = 24 . . . square units

The square base has an area of ...

  A = s^2 = 8^2 = 64

Then the total surface area is ...

  A = base area + 4 · triangle area

  A = 64 + 4(24) = 160 . . . square units

HELP QUICK!!! will give crown!! In a species of flowering plant, the color of the red flower (R) is dominant over the color of the white flower (R). What is the genotype of any red-flowered plant resulting from this species? *
rr
R
RR
RR or Rr

Answers

Answer: RR or Rr

A red allele present on at least one

of two homologous chromosomes.

Explaination:

Since red is dominant, only

one chromosome needs a red allele in

order for the plant to have red flowers.

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