Rebecca travels 160 km in 2.5hours and then travels at a constant speed of 85 km/h for a further 2 hours. Find the average speed, in km/h to 3 significant figures, for the whole journey.

Answers

Answer 1

Answer:

73.3 km/h

Step-by-step explanation:

Average rate of speed = total distance/total time

First distance is 160

Second distance = rt = 85(2) = 170

total distance = 160 + 170 = 330

total time = 2.5 + 2 = 4.5

Average speed = 330/4.5 = 73.3 km/h


Related Questions

PLZ HELP!!! Due today!!
Picture is there!

Answers

Answer:

a. Perimeter of the figure = 80 units

b. Area of the figure = 480 square units

Step-by-step explanation:

Length of side of octagon

[tex] =2\sqrt {13^2 - 12^2} [/tex]

[tex] =2\sqrt {169 - 144} [/tex]

[tex] =2\sqrt {169 - 144} [/tex]

[tex] =2\sqrt {25} [/tex]

[tex] =2\times 5[/tex]

[tex] =10\: units[/tex]

a. Perimeter of the figure = 8*10 = 80 units

b. Area of the figure

[tex] = 8 \times \frac{1}{2} \times 10 \times 12 \\ \\ = 4 \times 120 \\ \\ = 480 \: {units}^{2} [/tex]

9) Jalen needs to fill a cylindrical flower pot with topsoil. The flower pot is 12 inches tall with a diameter of 4 inches. How many cubic inches of soil is needed?

Answers

48 cubic inches of soil is needed

i think i chose the wrong one

Answers

i think its right good luck im not so good at this

Answer:

ur good

Step-by-step explanation:

Your class is going to plant vegetables in a section of the school garden. The garden manager has provided an area to plant the vegetables: The total area for the class to plant vegetables will be a rectangle that is 8 feet long and I feet wide. The class has decided to plant four rectangular sections of the class garden with vegetable according to these dimensions: CARROTS-2X4 POTATOES-3X6 BROCCOLI-2x3 CORN-2x7​

Answers

I really don’t know

Answer:2

Step-by-step explanation: if the CARROTS is 2X4 POTATOES-3X6 BROCCOLI-2x3 CORN-2x7​

that mean we are going to new 2 of them

Drag each inequality to the correct location on the table based on whether its
graph will have a dashed or a solid boundary line.

Answers

Answer:

y>2x+8:  Dashed    x+1/2y is less than or equal to 12:  Solid      y is greater than or equal to 2/3x-6:  Solid     -4x+2y<10:  Dashed

Step-by-step explanation:

If there is a < or > sign, it is dashed, because the answer you get is not part of the solution (it is either less than or greater than the solution). If it is a less than or greater than or equal to sign (with the line under it) the line will be solid because the answer you get is part of the solution.

The boundary line will not be included in the solution set. Therefore, the boundary line will be dashed. The table shows the following:

Dashed if the boundary line is not included in the solution set.

Solid if the boundary line is included in the solution set.

The inequalities that will have a dashed boundary line are:

y > 2x + 5

x + y ≤ 12

The inequalities that will have a solid boundary line are:

y ≤ 2x - 6

-4x + 2y - 10 ≤ 0

Here is an explanation of why each inequality will have the boundary line that it does:

y > 2x + 5

This inequality is not equal to 2x + 5, so the boundary line will not be included in the solution set. Therefore, the boundary line will be dashed.

x + y ≤ 12

This inequality is equal to x + y ≤ 12, so the boundary line will be included in the solution set. Therefore, the boundary line will be solid.

y ≤ 2x - 6

This inequality is equal to y ≤ 2x - 6, so the boundary line will be included in the solution set. Therefore, the boundary line will be solid.

-4x + 2y - 10 ≤ 0

This inequality is not equal to -4x + 2y - 10, so the boundary line will not be included in the solution set. Therefore, the boundary line will be dashed.

To know more about boundary:

https://brainly.com/question/30050559

#SPJ2

Need Help With this plz answer fast

Answers

Answer:

well if you would put the question or at least a picture i dont think anyone can help. Try the number 7

Step-by-step explanation:

What is the measurement of angle 2
If angle 4 is 35

Answers

Answer:

29

Step-by-step explanation:

twenty nineeeeeeeeee

Hannah's school hosted a book donation. There are 150 students at her school and they donated a total of `b` books! Hannah donated 3 times as many as the average number of books each student donated.



How many books did Hannah donate?

Write your answer as an expression.

Answers

Answer:

b/50

Step-by-step explanation:

CAN YOU PLS MARK ME BRAINLIEST THANK YOU HAVE A NICE DAY!

Answer:

= b/50

Step-by-step explanation:

3 times b/150 = b/50

Type your answer in the box.

g = 5 o = 15

Answers

The answer to (4g-o)^2 is 25

3/4 x 5/6 simplified

Answers

Answer:

5/8

Step-by-step explanation:

3/4x5/6=15/24

15 and 24 can both divided by 3. so 15/3 is 5, 24/3 is 8.

And we can't simplify 5/8 anymore, so the answer is 5/8.

What is the smallest 3-digit number of the form aaa such that it is divisible by 9? (Here, a represents a digit.)

Answers

Answer:

If all three digits need to be the same (I assume that's what aaa means) it's 333

Step-by-step explanation:

For a number XYZ to be divisible by 9, X+Y+Z must be divisible by 9. Here's why:

X*100 + Y * 10 + Z = X + Y + Z + 99*X + 9*Y = X + Y + Z + 9(11X + Y)

So we need to find the smallest a so that a+a+a = 3a is divisible by 9. The smallest would be 0, but 000 is not a real 3-digit number. The next one is 3.

6 = 2(y + 2)
Solve for y

Answers

awnser: y=1
Distribute
6=2(y+2)
6=2y+4
subtract 4 from both sides of the equation
6=2y+4
6-4=2y+4-4
simply
2=2y
then divide 2 from both sides
2/2=2y/2
y=1
Hope this helps :)

For which value of x is the equation 2(1 + x) = x + 3 true?

Answers

Answer: x=1

Step-by-step explanation:

A person invested \$3,700$3,700 in an account growing at a rate allowing the money to double every 6 years. How much money would be in the account after 14 years, to the nearest dollar?

Answers

Answer:

3700 x 2 = 7400 plus 1233.333... ≈ 8633

Step-by-step explanation:

Since the money (3700) doubles every 6 years we know that we multiply it by 2 (6 years times 2 = 12 years) but we still have 2 years. 2 years of 6 years = 1/3 more. 1/3 of 3700 ≈ 1233. Add 1233 to 7400 to get 8633, the answer.

x = 3y +9
2x – 3y = 9
help plz​

Answers

Answer:

Their are caculators online search the type of math it is then put caculator for example exponents caculator

Step-by-step explanation:

I WILL GIVE BRAINLIEST TO WHOEVER GETS IT RIGHT.

4/5n = 2/3. n= __?

2/15

5/6

1 1/5

1 7/15

Answers

Answer:

(5/6)

Step-by-step explanation:

Bc (2/3)=0.666666666667....

(2/15)*(4/5) doesn't make 0.666666666667

(4/5)*(5/6)= 0.666666666667

pls help me the question is on the picture

Answers

Answer:

x =149

Step-by-step explanation:

Answer:

X=149

Step-by-step explanation:

77+72=149

Max is building a cage for his ducks. The base of the cage is 208 square feet. If one side is 13 feet, how long is the other side? The cage is a rectangular prism.

Answers

Answer:

16ft

Step-by-step explanation:

Given data

Base area of cage= 208ft^2

Length of side= 13 ft

Required

the Width

We know that the area of a rectangle is expressed as

Area= Length*Width

Substitute

208= 13*W

W= 208/13

W= 16ft

Hence the width is 16ft

Answer:

Step-by-step explanation:

B*h=208*13=

Ps help now before 10 pm cst

Answers

Answer:

In 15 months the balance of account A will be equal to the balance of account B.

HELP! Will mark brainliest Tysm

Answers

Answer:

i think its the third one sorry if its wrong

Step-by-step explanation:

The are of a rectangle is 24 square inches. The length is 6 inches and the width is w inches. How much longer is the length than its width in inches?

Answers

Answer:

W = 4inches

Length is 2 inches longer then the width

Step-by-step explanation:

6x4=24inches

Please help me, I am completely lost...

Answers

5 is the answer, you are welcome.

Help me please!! ill mark brainliest

Answers

Using the formulas

AB=s(s﹣a)(s﹣b)(s﹣c)

V=ABh

s=a+b+c

2

Solving for V

V=1

4h﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=1

4·12·﹣184+2·(18·18)2+2·(18·2)2﹣184+2·(18·2)2﹣24≈215.66641

or 216.

This is for my sister she need help ASAP

Answers

Answer:

Your Answer is C

A football team tries to move the ball forward as many yards as possible on each play, but sometimes they end up behind where they started. The distances, in yards, that a team moves on its first five plays are 2, 21, 4, 3, and 25. A positive number indicates moving the ball forward, and a negative number indicates moving the ball backward?

Answers

Required Question:

Which number in the list is the greatest?

Answer:

25 yards

Step-by-step explanation:

Given

[tex]Distance:2\ 21\ 4\ 3\ 25[/tex]

Required

The greatest distance moved

To do this, we make comparison between the 5 distances given and select the greatest.

By comparison:

[tex]25 > 2[/tex]

[tex]25 > 21[/tex]

[tex]25 > 4[/tex]

[tex]25 > 3[/tex]

Hence, the greatest distance is 25 yards

Can someone help quick?

Answers

Answer:

D

Step-by-step explanation:

The price of a coat increased from $82 to $90. What is the approximate price increase percentage?

Answers

Answer: approximately 10%

Step-by-step explanation:

If the simple interest on ​$1,000 for 5 years is ​$300​, then what is the interest​ rate?

Answers

Answer:

6%/year

Step-by-step explanation:

Solving our equation

r = 300 / ( 1000 × 5 ) = 0.06

r = 0.06

converting r decimal to a percentage

R = 0.06 * 100 = 6%/year

The interest rate required to

accumulate simple interest of $ 300.00

from a principal of $ 1,000.00

over 5 years is 6% per year.

1) Evaluate the following algebraic expression: 8n + 2 when n = 6 Show your work: Answer =

Answers

Answer:

50

Step-by-step explanation:

use PEMDAS. so you multiply 8 times 6, which equals 48. 48 plus 2=50 :)

8n+2

Since n=6, we replace n with 6

8(6)+2

Because of order of operations, we multiply first, then add.

48+2

50

So the answer is 50

----

sorry if I couldn't help

answerrr if u mayyy plssss

Answers

You just divide them. So the answer is 743
-9 is a colder temperature because -9 is further from 0. The higher the negative number the colder the temperature is
Other Questions
SaveSubmitThe U.S. government is divided into levels, and each level is divided into branches. The levels interact with one another, and thebranches at each level also interact. Choose ALL correct statements about branches and levels of the U.S. government.es )A)The state government can use checks and balances on the federalgovernmentA power that both state governments and federal government have isB)taxationC)At the federal level, there are checks and balances in place betweenbranchesD)The state governments, Like the federal government, are divided into threebranches.E)The legislative, judicial, and executive branches can all make laws at thestate levelHintGovernment/Civics(SS8C61, b) Branches of GovernmentID: 522068 PLEASE HELP ME!! CHEMISTRY DIMENSIONAL ANALYSIS SUPER EASY!! WILL GIVE BRAINLIEST TO THE !!*CORRECT ANSWER*!! The density of chocolate is 1.325 g/cm^3. How many cups would 20,000 mg of chocolate be? Which statement about the carbon cycle is most true?A. Energy is destroyed when organic matter decays.B. The total mass of carbon on Earth is always increasing.C. Carbon is lost from the cycle when it enters the atmosphere.D. Carbon changes form, but the total amount on Earth remains the same The composite figures below are made of right prisms.Place the figures in order from least surface area to greatest surface area.(Order them from least to greatest) Will report if it is not what was asked(6 points and Branleist if answered properly) How has racism affected how Delpit thinks about herself? According to her observations, how has racism affected how other African Americans think about themselves? HELP ME PLEASE ITS URGENT Please give me an outline for thisshould volunteering be mandatory in high schools Thank you!!! There are 188 $100 bills in a bag how many would each person get Can anyone help? Ill give Brainliest to the correct answer.. plz help me due soon Which of the following best explains why most immigrants came to the United States between 1865 and 1920? A. Most immigrants were wealthy Europeans who brought successful businesses to the United States. B. Most immigrants faced problems at home. They believed that there was much more opportunity for them in the United States than at home. C. Most immigrants came to the Oregon Territory, where married couples were given 640 acres of land for free. D. Most immigrants did not expect to find many opportunities in the United States. But many were expelled from their homelands. i need help with this problem please help me.. i would really appreciate it, thank you! Which figure best represents a kite?A figure with 1 pair of parallel sides.A figure with 2 pairs of parallel sides with the different lengths.A square.A kite. The volume of a cylinder is 8.478 cubic inches, and the radius is 15 inches. Which measurement is closest to the height of this cylinder in cubic inches? A. 90 inB. 12 inC. 48D. 8 Myra is the only member of the track-and-field team who both run andjump.Which answer option best revises this sentence to use correct subject-verbagreement?A. Change "the only member' to "one of the only members"B. Change 'is' to "are."C. Change "Myra' to 'She."D. Change "run and jump" to "runs and jumps. There are 37 students on a bus the bus stops 5 times. 7 students get off at each stop how many students are left on the bus The _____ waves soothed Jacks sun bum.a. Gentlyb. Fasterc. Gentled. Fastest PUNTOS POSIB!25 Zoogeographic regions are characterized by the presence of specific groups of animals. Theseregions are determined by the taxonomic or phylogenetic relationships of animals. The mapshows the zoogeographic regions proposed by the naturalist Alfred Russel Wallace in 1876.Zoogeographic RegionsNearcticPalearcticEthiopianKEYNeotropicalGeographical barrierssuch as mountains orbodies of waterAustralasianThe similarities of organisms in which two areas numbered above provide the best evidencefor common ancestry between the organisms in both locations?O 5 and 6 What is the most likely oxidation state of nitrogen?O A. -2OB. +3O C. +4O D.-3