Mathematics Middle School

Lan Ying and Sean love bike riding. They take off from the same place, at the same time, going in the same direction. Lan Ying rides at a steady speed of 6 km/h, and Sean rides at a steady speed of 4km/h. How far apart will they be in 3 hours?

Answers

Answer 1

Answer:

6 Kilometers.

Step-by-step explanation:

Try not to overthink these questions! They are easy if you just think of them in simple terms!

6 km * 3 h = 18 km

4 km * 3 h = 12 km

18 km - 12 km = 6 km.

Answer 2

6 kilometers if you solve

Related Questions

I can't figure this out. I'm having a really bad day and I'm not functioning correctly.

Please help!!

Answers

Answer:

√689 ≈ 26.2 leagues

Step-by-step explanation:

For the purpose of calculating the distance between the marked points, the line is considered to be the hypotenuse of a right triangle. The horizontal distance between the points is one leg of the triangle, and the vertical distance is the other leg. The Pythagorean theorem relates these distances.

Pythagorean relation

The Pythagorean theorem relates right triangle sides 'a' and 'b' to hypotenuse 'c' with the formula ...

c² = a² +b²

Taking the square root, we have an expression for 'c' in terms of 'a' and 'b'.

c = √(a² +b²)

Application to distance

The horizontal distance between the points is the difference of their x-coordinates:

a = x2 -x1 = 2 -(-18) = 20

The vertical distance between the points is the difference of their y-coordinates:

b = y2 -y1 = -10 -7 = -17

When we square these numbers, we find their signs to be irrelevant.

c = √(a² +b²) = √(20² +(-17)²) = √(400 +289) = √689

c ≈ 26.249

The distance between the given points is about 26.2 leagues.

Sqr root 689 should be the answer

A basketball league wants to order 512 T-shirts for the teams. If there are 8 T-shirts in each package, how many packages of T-shirts should the league order?

Answers

Would be 64 packages

Division!! 512 divided by 8 is 64
So reversed 64 x 8 is 512

Answer: 64 packages
Divide: 512/8 = 64
Check answer: 64 x 8= 512

The regular price of a pair of jeans is $49.50. During a sale, the jeans were marked as 15% off. What was the approximate price of the jeans during the sale?

A.$3.30
B. $7.43
C. $42.08
D. $56.93

Answers

Answer: D

49.50x1.15=59.92
Therefore, the approximate price of the jeans during the sale was $56.93.

Answer D is the correct answer

Solve the system of equations by substitution. show all the steps needed to solve.

2x+3y=19
y=9

3x+9y=42
y=2x

2x + 5y=22
x=3y

x=2y
3x + 2y=2

x+3y=11
x+4y=14

Answers

2x+3(9)=19
2x+27=19
-27 -27
2x=-8
2x/2=-8/2

x=-4
y=9

3x+9(2x)=42
3x+18x=42
21x=42
21x/21=42/21
x=2
y=2(2)
y=4

x=2
y=4

2(3y)+5y=22
6y+5y=22
11y=22
11y/11=22/11
y=2
x=3(2)

x=6
y=2

3(2y)+2y=2
6y+2y=2
8y=2
8y/8=2/8
y=0.25 or 1/4
x=2(0.25)
x=0.5 or 1/2

x=0.5 or 1/2
y=0.25 or 1/4

x+3y=11
-(x+4y=14)
-1y=-3
-1y/-1=-3/-1
y=3
x+3(3)=11
x+9=11
-9 -9
x=2

x=2
y=3

Just type all of these in Desmos graphing calculator

Type a digit that makes this statement true.
180,
93 is divisible by 9.
Submit

Answers

The answer to this question would be 180,693 as if you add each digit in this answer then you get 27 which is divisible by 9

The answer would be 180693 as the other number would not fit after dividing the answer will be 20077

5/6x + 2/3x + = 7
x=

Answers

Use cymath.com for sure.

When I typed your question there it said the simplified answer was, x = 0

5\6x+2\3x=7

Answer is x=0

In ABC, mB is 3 times mA and mC is 4 degrees less than 6 times mA. What equation is used to solve for the variable x? Find the measure of each angle.

Answers

Answer:

mark me brainlist please

the person already answered

A spherical water balloon is filled such that it has a diameter of 9 inches. Water is then released from the balloon until it has a diameter of 7.2 inches. What volume of water was released from the balloon?

Answers

Answer:

Step-by-step explanation:

seven point two and 9 imches

The answer is 5 therefore you should get it

pls help me outttttt

Answers

Anything that is times one Will always be 1

If your grade is 79% now and you get a 70% on a quiz,what is your grade now?

Answers

Depends on how much the quiz of your class are worth. The quizzes could represent only %50 of your grade and the rest might be homework

Grade will be around a 75%

which is faster: drive a car at a rate of 40 kilometers per hour or drive a car at a rate of 15 meters per second

Answers

Answer:

Step-by-step explanation:

Let's convert one of these measurements so that both measurements have the same units. 15 m/sec is equivalent to 0.015 km/sec, which in turn is equivalent to

0.015 km 3600 sec

--------- -------- ----------------- = 54 km/hr

1 sec 1 hr

This latter result (54 km/hr) is faster than (40 km/hr).

15 meters per second is equivalent to 54 kilometres per hour.

Help please. I will do brainlyist later.

Answers

the dot above the -2 is not solid so -2 is not part of the solution.

Answer: a) x < -2

Answer:

Step-by-step explanation:

Open dot means less than or greater than not equal to

Have a nice day :)

ill give brainly and 30 points

Answers

Answer:

D) 22x + 99

Step-by-step explanation:

9 (2x+9) + 2(2x + 9)

18x + 81 + 4x + 18

22x + 81 + 18

22x + 99

9(2x+9)+2(2x+9)=
18x+81+2(2x+9)=
18x+81+4x+18=
(18+4)x+(81+18)=
22x+99

find the value of x. please help!!!

Answers

Answer:22x+2

Step-by-step explanation: and th x's and y's

Answer: 22x+2

Hope it helps!!!

Someone help its math 50 points

Answers

Answer:

i think it is (-1,0)

Step-by-step explanation:

if you graphed the points this option makes the most sense

The answer is D, or (2, -2).

Explanation: The angles that would make up the top left and right corners of the parallelogram would be (4,0) and (2,0). Because (0, -2) is the bottom left angle, to make this shape a full parallelogram, the y-coordinate of the other angle would have to also be -2, and it would have to be to the right of the origin so the figure does not look sloppy. To add on to this, none of the given x-coordinates are negative, so the fourth point should not have a negative x-coordinate. That would instantly get rid of A, B, and C. Therefore, your answer would be D, or (0, -2).

Whoever helps gets brainliest!

Answers

Answer:

4 miles per hour

Step-by-step explanation:

Unit rate is the rate of something per 1 unit. In other words, the unit rate is x units per 1 unit. In this situation, the unit rate is how many miles Hassan walks in 1 hour.

Proportion

First, to find the rate of anything we can set up a proportion. In the question, the rate is described as miles per hour, so the miles will be the numerator and the hours will be the denominator.

This creates the proportion [tex]\frac{12miles}{3hours}[/tex]

So, the rate we are given is 12/3.

Unit Rate

To find the unit rate we need to make the denominator equal to 1. To do this, divide both the numerator and denominator by 3.

12/3 equals 43/3 equals 1

So, this means that the new proportion is 4/1. Next, we can add our units, which means that Hassan walks 4 miles per 1 hour.

Graph

Now we can resize the bar graph. The purple bar should be set to 4 because this represents the miles. Then, the green bar should be set to 1 because it represents the hours.

4 miles per hour bc that's what the answer is

Find the area of the clock
Use 3.14 for pi

Answers

Area = PI x radius^2

The diameter is given as 25 inches, the radius is 1/2 the diameter.

Radius = 25/2 = 12.5 inches

area = 12.5^2 x 3.14

Area = 490.625 square inches

Answer:
490.87
Step-by-step explanation:
3.14*25=78.50 <--- Pi w/ Diameter (trick)
25 divded by 2 =12.50
3.14*12.50^2=
Area = 490.87

Enjoy your day! <333

im not so good at math ;-;

Answers

Answer:

1. 660.52

2. 572.56

3. 283.53

4.254.47

5. 63.62

6. 380.13

Step-by-step explanation:

do πr²

r = radius

if you have a diameter like question 4 divide by 2 and you get radius

Answer:

1. A = 660.52 square units. C = 91.11 units.

2. A = 572.56 square units. C = 84.82 units.

3. A = 283.53 square units. C = 59.69 units.

4. A = 254.47 square units. C = 56.55 units.

5. A = 63.62 square units. C = 28.27 units.

6. A = 380.13 square units. C = 69.12 units.

Step-by-step explanation:

The equations for Area and Circumference of a circle are as follows:

A = πr², where r is the radius.C = 2πr, where r is the radius.

You are given the radius (or diameter) of each circle which can be substituted into the above equations for r. Diameter is the entire length across the circle through the center, which is equal to 2(r).

1. A = π(14.5)² = 660.5198. The area is approx. 660.52 square units.

C = 2π(14.5) = 91.106. The circumference is approx. 91.11 units.

2. A = π(13.5)² = 572.555. The area is approx. 572.56 square units.

C = 2π(13.5) = 84.823. The circumference is approx. 84.82 units.

3. A = π(9.5)² = 283.528. The area is approx. 283.53 square units.

C = 2π(9.5) = 59.690. The circumference is approx. 59.69 units.

4. Diameter = 18; 18/2 = 9 = r. So, A = π(9)² = 254.469. The area is approx. 254.47 square units.

C = 2π(9) = 56.548. The circumference is approx. 56.55 units.

5. r = 9/2 = 4.5. So, A = π(4.5)² = 63.617. The area is approx. 63.62 square units.

C = 2π(4.5) = 28.274. The circumference is approx. 28.27 units.

6. A = π(11)² = 380.132. The area is approx. 380.13 square units.

C = 2π(11) = 69.115. The circumference is approx. 69.12 units.

Are They Proportional? Graphing (Additional Instructions in Photo)
Screenshot the following photo and !!SHOW ALL WORK!!
Please help ASAP read my profile picture so hopefully you can understand how much I need help!

Answers

Answer:

khgfcvkhgcgvkgvgvbbbbbbbbbbnnnnnnnnnnnnnnnnnnnnnnnnnvvvvvvvvvvbnbvbnbvbnbvbnbvbnbvnbvbnbvbnbvbn

Step-by-step explanation because khgfcvkhgcgvkgvgvbbbbbbbbbbnnnnnnnnnnnnnnnnnnnnnnnnnvvvvvvvvvvbnbvbnbvbnbvbnbvnbvnbvbnbvbnbvbn = mhgcmgfmgcvbnvmbnbmvmbvnbvmnbvmbv

Divide the known amount by the horsey knows $45/6=$7.50 and times that by certain hours like 1,2,3 etc... Make a graph of the hours and the money you’d get and plot the data on the graph

Melanie goes to a shelter to buy a dog. She has settled on to two dogs, An Alsatian and a bulldog. To decide them, she plans to flip a coin. Before she does, she flips the coin 50 times to check for fairness of the model. Her results are shown in the table.
Coin Toss Result:
Times Result Occurred
Heads : 24
Tails : 26
The relative frequency of landing on heads is [ ]. The relative frequency of landing on tails is [ ].
Please answer ASAP.

Answers

52 and 58 is the answer

Fifty two and58 is the answer

The corner store sells a super-size granola bar for $4. How much do four super-size granola bars cost?

Answers

Answer:

The answer would be 16

Step-by-step explanation:

4x4 =16

Hope this helps!

Answer:

Sixteen dollars

Step-by-step explanation:

you multiply four times four since that's the amount of granola you want times the cost that would be sixteen

Which faces of a rectangular prism always have the same area?

Answers

Answer:

A rectangular prism has six faces, commonly referred to as the base, top and four sides. The base and top always have the same area as do pairs of opposite sides

Step-by-step explanation:

Answer:

the base and the top, along with the opposite sides

Step-by-step explanation:

A rectangular prism has six faces, commonly referred to as the base, top, and four sides. The base and top always have the same area as do pairs of opposite sides.

Eighth grade A.2 Divisibility rules VW5
You have prizes to rev
There are 86,784 fish in a hatchery, which are divided evenly among the ponds. How many
ponds could there be at the hatchery?
Select all the possible numbers.
3
6
4
2
Submit
Type here to search
OC
,C

Answers

Answer:

3, 6, 4, 2

Step-by-step explanation:

The factors of 86784 are :

1 * 86784

2 * 43392

3 * 28928

4 * 21696

6* 14464

All are correct and are factors

Evaluate each expression, Giving the answer in Scientific notation.

1) 5.3 x 10^4 + 4.7 x 10^4

2) 3.7 x 10^6 - 3.3 x 10^6

3)4.8 x 10^-3 + 6.3 x 10^-3

4)6.6 x 10^-5 - 6.1 x 10^-5

Answers

1) 1x10^5
2) 4x10^5
3)1.11x10^-2
4) 5x10^-6

I need help for my question pls

NEED HELO FAST!
Which of the following statements is true for 5.78?
A) It's rational because 5.78 = 526/2 33.
B) It's irrational because 5.78 = 5.787878.
C) It's irrational because 5.78= 5.787878.
D) It's rational because 5.78 = 5.787878.

Answers

its rational - 5.78 = 5.787878.

explanation:

We have been given a number 5.78. We are asked to choose the correct statement which shows that 5.78 is a rational number.

Upon looking at our given choices, we can see that only option A is the correct choice as it has repeating digits (78) after decimal.

We know that a number with repeating decimals can be written as a fraction, therefore, option D is the correct choice.

Answer:

hello

Step-by-step explanation:

its D

In which class was his scores the closest to:

Answers

i’m pretty sure it’s english but i’m not 100% sure

Answer:

Theater

Step-by-step explanation:

MAD stands for Mean Absolute Devastation, which is the average difference between numbers/data.

pls help this is due tomorrow morning and it's 1 am I'll mark brainliest 15 points each

Answers

Answer:

Let [tex]\pi[/tex] represent 3.14
SA = 2[tex]\pi[/tex]r^2 + 2[tex]\pi[/tex]rh
SA = 2[tex]\pi[/tex](5)^2 + 2[tex]\pi[/tex](5)(12)
SA = 2[tex]\pi[/tex](25) + 2[tex]\pi[/tex](60)
SA = 50[tex]\pi[/tex] + 120[tex]\pi[/tex]
SA = 50(3.14) + 120(3.14)
SA = 157 + 376.8
SA = 533.8inch^2

Therefore the surface area of the cylinder is 533.8 square inches.

Answer: Let represent 3.14SA = 2r^2 + 2rhSA = 2(5)^2 + 2(5)(12)SA = 2(25) + 2(60)SA = 50 + 120SA = 50(3.14) + 120(3.14)SA = 157 + 376.8SA = 533.8inch^2

Can someone help me pls its math and due today

Answers

(1,7)
Because in order for it to be square all sides must be the same length

Answer:

It’s 1, 7 bc that’ll finish the square

Type a digit that makes this statement true.
32,324,44
is divisible by 6.
Submit

Answers

Answer:

444

Step-by-step explanation:

444 is answer. it is very easy. 444/6= 74

If you divided 32 by 6 you get 5.3333 , if you do 324÷6 you will get 54 , and 44 divided by 6 you get 7.3333. 324 divided by 6 comes out to 54 a number without decimals so it’s 324.

Can you help me please? I need this ASAP

Answers

Answer:

Top left and right

Step-by-step explanation:

simply multiply the first number of Y with X

Hope this helps

the answer is top right and left

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