Jones covered a distance of 50 miles on his first trip. On a later trip he traveled 300 miles while going three times as fast. His new time compared with the old time was:

(a) three times as much, (b) twice as much, (c) the same, (d) half as much, (e) a third as much
please explain your thought process

Answers

Answer 1

Answer:

The answer is b. But you asked for the thought process so...

Step-by-step explanation:

Let speed of the 1st trip x miles / hr. and speed of the 2nd trip 3x / hr.

We know that

Speed = Distance/Time.

Or, Time = Distance/Speed.

So, the time taken to cover a distance of 50 miles on his first trip = 50/x hr.

And the time taken to cover a distance of 300 miles on his later trip = 300/3x hr.

= 100/x hr.

So we can clearly see that his new time compared with the old time was: twice as much.

Have a great day :)


Related Questions

give two examples of organism that has cell structure similar to cell of permanent alide​

Answers

A human blood cell. I think I am not too sure

The lengths of two sides of a right triangle are given. Find the length of the third side. Round to the nearest tenth if necessary.

leg: 20 m; hypotenuse: 25 m


10.5 m

8.9 m

15 m

32 m

Answers

Answer:

the answer is third option

because, 20²+x²=25²

x²=625-400

x²=225

X=15m

Amy plans to buy a pair of shoes for $78.99 and 2 shirts for $21.98 each. If the sales tax rate is 6%, what is reasonable for her total purchase amount?

Answers

the total after tax will be 130.33

Determine the slope

Answers

Answer:

1/3

Step-by-step explanation:

We use the formula y2-y1/x2-x1. The two points that I would use are (3,-1) and (-3,-3). This means that the equation will be -3--1/-3-3. This is equal to -2/-6. This is also equal to 1/3. Therefore, the slope is 1/3.

If this helps please mark as brainleist

Please help! I will give brainliest!

Answers

Answer:

the answer is: B thank me later!

Answer:

a.option is the correct answer right

In a right triangle, the hypotenuse has endpoints P(–3, 2) and Q(1, –3). If R represents the third vertex in the triangle and R is located in the third quadrant, what is the length of PR?

Answers

Answer:

PR = 5 units.

Step-by-step explanation:

Given:

Right triangle

Hypotenuse = P(–3, 2), Q(1, –3)

R = located in the third quadrant.

To calculate the length of PR,

(i) First make a sketch of the points P and Q. The diagram is attached to this response.

(ii) As shown in the diagram, the point R is located in the third quadrant and its distance from P is from point -3 to 2 on the y-axis.

There are 5 points between -3 and 2. Therefore, the length PR = 5 units

Which of the following are roots of the polynomial function

Answers

Answer:

its a and b

Step-by-step explanation:

PLEASE HELPPPP !!!!!!!

Answers

Answer:

first

Step-by-step explanation:

(3;0)

y(3) = 2/3 * 3 - 2 = 0

(0;-2)

y(0) = 2/3 * 0 - 2 = -2

Sally can paint a room in 9 hours while it takes Steve 5 hours to paint the same room. How long would it take them to paint the room if they worked​ together?

Answers

Answer: About 3 hours and 5 minutes to paint the room together.

Step-by-step explanation:

Sally can paint 1/5 of the room in an hour and Steve can paint 1/8 of the room in an hour.

Room/Hour

1/5 ± 1/8 =8/40  

8/40+5/40=13/40

How long to paint the room?

13/40 x 1= 40/13

40÷13=3.0777

So the answer will be Sally and Steve can paint the room in about 3 hours and 5 minutes

Find g(x)) when f(x) = 3x2 + x - 8, and g(x) = 4x + 5

I have no idea what she’s talking about please help me out

Answers

Answer:

A

Step-by-step explanation:

Option A is the correct answer of this question.

20a³-20a²+5a=?
-9x²+6x-1=?
-12a²+24ma-12m²=? 6a²-24a⁴+24a⁶=?
7x²+7y⁴-14y²=?​

Answers

Answer:

5a^6,-3x^3-1

Step-by-step explanation:

we subtract the base and add the exponent

Will Give Brainliest,. Make Sure to Show your work.

Answers

Answer:

540

Step-by-step explanation:

All you have to do is multiply all of the numbers on the upside of the shape

Answer:

24 unit^2.

Step-by-step explanation:

Area = 1/2 * base * height

= 1/2 * 12 * 4

= 1/2 * 48

= 24 unit^2.

Alejandro wants to rent an apartment that costs $795 a month. They want $25 for a
credit check and one month's rent as a security deposit. How much money does
Alejandro need to rent the apartment.

Answers

Answer:

820

Step-by-step explanation:

795 + 25 = 820$

What is the surface area of this composite solid?

Use 11.3 meters for the slant height of the triangular prism.

Enter your answer in the box.


__m²
Composite made up of a rectangular prism surmounted by a triangular prism. The rectangular prism has dimensions of 16 meters wide by 20 meters long by 12 meters high. The triangular prism has dimensions of 16 meters wide by 20 meters long with a triangular altitude of 8 meters high.

Answers

SEE THE IMAGE BELOW (I REALLY HOPE THIS IS CORRECT!!!)

Answer:

1764 m²

Step-by-step explanation:

Refer to attached picture.

All given dimensions are given on the picture (not to scale).

Since altitude of the triangle and slant height is given, we can find the base of the triangle using Pythagorean:

[tex]b/2 = \sqrt{11.3^2-8^2} = \sqrt{64} = 8m, \\b = 16 m[/tex]

It has 9 faces and the total surface area is:

S = 16*20 + 2(20*12) + 2(20*11.3) + 2(16*12) + 2(1/2*8*16)  = 1764 m²

which property of polynomial multiplication says that the product of two polynomials is always polynomial

Answers

Answer:

Closure is the right answer.

Alice is searching online for tickets to a knicks game. Two weeks ago, the cost was $30. Now the cost is $39. What is the percent increase

Answers

Given:

Two weeks ago, the cost of tickets = $30

Now, the cost of tickets = $39

To find:

The percent increase.

Solution:

We have,

Initial value = $30

New value = $39

Formula for percentage increase is:

[tex]\%\text{increase}=\dfrac{\text{New value - Initial value}}{\text{Initial value}}\times 100[/tex]

Using this formula, we get

[tex]\%\text{increase}=\dfrac{39-30}{30}\times 100[/tex]

[tex]\%\text{increase}=\dfrac{9}{3}\times 10[/tex]

[tex]\%\text{increase}=3\times 10[/tex]

[tex]\%\text{increase}=30[/tex]

Therefore, the percent increase in the cost of tickets is 30%.

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

is parallel to . and are perpendicular to and .

The ratio of the lengths of and is __:__

Answers

Answer:

1 : 1

Step-by-step explanation:

PQ parallel to RS

PR and PS ; perpendicular to PQ and RS

FOR parallel lines, the perpendicular line joining then are always the same ; here the 4 angles formed are all 90°

Answer:

1:1

Step-by-step explanation:

The table shows the number of practice problems completed in 30 minutes in three samples of 10 randomly selected math students. Number of practice problems completed In 30 minutes
Sample 1 18 15 17 17 18 | 13 | 17 16 | 16 | 14 | 18 Mean = 16.2
Sample 2 21 20 18 20 19 19 20 21 21 20 Mean = 19.9
Sample 3 | 14 16 18 13 | 18 | 16 | 16 | 17 | 19 | 19 Mean = 16.6

Which statement is most accurate based on the data?

A. A prediction based on the data is reliable, because the means of samples 1 and 3 are very close together.
B. A prediction based on the data is not completely reliable, because the means of samples 1 and 3 are too close together.
C. A prediction based on the data is reliable because there are no noticeable differences among the samples
D. A prediction based on the data is not completely reliable because the meaning of sample 2 is noticeably higher than the means of the other two samples. : ))​

Answers

Answer:

D

Step-by-step explanation: please give me brainlist  Thanks!

I will give brainiest

Answers

Answer:(0, -3)

Step-by-step explanation:

Isaac finished eight of the ten homework problems. Phil has finished of the homework. How many more problems did Isaac finish?​

Answers

Answer:

-2

Step-by-step explanation:

If Issac has finished 8/10 problems in the homework, and Phil has completed all of it, it can be concluded that Phil completed 10/10. 10/10 would equal a whole, or in this case, the entire homework. If Issac completed 8 problems, and Phil completed 10, subtract both values to find that Issac completed -2 more problems than Phil.

*correct me if I'm wrong, or If I didn't fully understand your question, because I am a little confused with how much homework Phil has finished.

Johnny took a math quiz last week. He got 9 problems correct and 11 problems incorrect. What percentage did Johnny get correct?

Answers

Answer:

The answer is 45%

Step-by-step explanation:

9+11=20

9/20

=4.5/10

=45/100

=45%

Jayna used the distributive property to simplify the expression 4(a + 2) and got(4a + 2). Do you agree with Jayna?

Answers

Answer:

No

Step-by-step explanation:

I would not agree with Jayna because using the distributive property, you can get:

4(a + 2) = 4(a) + 4(2) = 4a + 8

Jayna did not get the right answer because she did not distribute the 4 to the 2 in a + 2 and she only multiplied a by 4.

16 x 7 = (10x7) + (6 x p)

Answers

The answer is P=7 hope this helps

Please help me. This is URGENT. I really need help,

Answers

Pretty sure its 39
I might not be right but im almost certain i got it

Answer:

39 ovoid it e fifty from ff

Step-by-step explanation:

39

The measure of angle 5x/6 is . The equivalent measurement in degrees is

Answers

Answer:

17

Step-by-step explanation:

If I need to pour a cement sidewalk five feet wide and 250 feet long, the cost of the cement is 30 afoot, what will I have to pay.

Answers

Answer:

$37500

Step-by-step explanation:

Given data

Width of side walk= 5ft

Lenght= 250ft

Cost per square foot= $30

Hence the area of the side walk= 5*250

                                                     = 1250ft^2

Hence the cost = 30*1250

                            =$37500

cosine angle B (geometry, right triangles- giving brainliest and thanks to all!)

Answers

Answer:

10/6 is the answer

cosine=hypotenuse/opposite

Step-by-step explanation:

Daryl can jump 2 1/2 yards. Sarah can jump 8 feet and Michelle can jump 72 inches.Which statement is true?

Answers

i would advise that you list the possible statements

Someone please help 20 points!
please help me PLEASE

Answers

Answer:

The answers are A, B and C.

Step-by-step explanation:

To solve the inequality you first have to use Distributive Property. You should get -3k + (-21) > -57

Next Divide 21 on both sides. -57/21 is -36

You should have -3k > -57

Divide -3 on both sides. -57/-3 is 12

You should end up with k > 12

And you never used -5, 0 or 8 in the equation and the question asks to choose the following that isn't included in the solution so your answers are A, B and C.

Hope This Helps! ^^

What is the value of f(4) if (x)=3x-10

Answers

Answer:

f(4) = 2

Step-by-step explanation:

x = 3(4) - 10

x = 12 - 10

x = 2

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