A long distance runner does a first lap around a track in exactly 50 seconds. As she tires each subsequent lap takes 20% longer than the previous one. How long does she take to run 3 laps?

Answers

Answer 1

9514 1404 393

Answer:

  182 seconds, or 3 minutes 2 seconds

Step-by-step explanation:

The second lap takes ...

  (50 s)(1 +20%) = (50 s)(1.2) = 60 s

The third lap takes ...

  (60 s)(1.2) = 72 s

The three laps take 50 +60 +72 = 182 seconds, or 3 minutes 2 seconds.


Related Questions

A worker's income is increased in the ratio 36:30.find the increase per cent​

Answers

9514 1404 393

Answer:

  20%

Step-by-step explanation:

The percentage increase is ...

  percent change = (new/old -1) × 100% = (36/30 -1)×100% = 1/5×100% = 20%

The worker's income increased 20%.

Given the data below are the number of students in each age group.
Ages Number of students
15-18 9
19-22 8
23-26 2
27-30 5
31-34 7
35-38 3

Based on the frequency distribution above, find the cumulative frequency for the class with lower class limit 31.

Answers

A scale of 1:50 000 means that every centimetre on the map is equal to 50 000 centimetres (500 metres) in reality.

The distance between two towns on that map is 6cm, therefore in reality there’s 6 * 50 000 = 300 000 centimetres, which is equal to 3 000 metres, which is equal to 3 kilometres.

How do I write 680,705 in expanded form.

Answers

Answer:

600,000+80,000+700+5

A group of people were asked if they had run a red light in the last year. 186 responded "yes" and 130 responded "no." Find the probability that if a person is chosen at random from this group, they have not run a red light in the last year.

Answers

Step-by-step explanation:

There are 186 + 130 = 316 people total, Out of those 316, there are 186 people who responded "yes" to running a red light.

so the probablity is approximately 186/316 = 0.58860759493

If you want this probablity as percentage , then it would be approximately

58.860759493%

                                       Thank You

SomEoNe plEasE anSweR tHis tYSm <3

Answers

Answer:

wouldnt it be 7m

Step-by-step explanation:

Answer:

7m

Step-by-step explanation:

3(x)m + 4(x)m = 7(x)m

m is the same value so were adding 3+4 which is 7

an example:

lets say m = 2

ur question is now 3(x)2 +4(x)2 = 7(x)2

3x2 = 6  

4x2=8

6+8= 14

7x2 = 14

two i others ways to name

Answers

Answer:

What do u mean? i guess toby or biannca

Step-by-step explanation:

Please answer this tysm :D I don’t know what the answer is

Answers

Answer:

4XP=LP

Step-by-step explanation:

4xp = lp

4 times one pig = 4 legs per pig

When simplifying an expression using order of operations addition MUST
ALWAYS come before subtraction.
True
False

Answers

Answer:

The answer is False,

Step-by-step explanation:

The answer is False because in some expressions if there are parentheses and there is a subtraction problem in the parentheses but there is an addition problem in front of the parentheses that does not exactly mean that you do the addition first, this is because the subtraction is inside the parentheses and so since the subtraction is in parentheses it is done fist.

Help again pls (view the photo)

Answers

Answer:

thirty-two equals two times number plus seven

does 1, 2, 5 from a right triangle

Answers

9514 1404 393

Answer:

  no

Step-by-step explanation:

The two short sides, 1 and 2, do not have a sum greater than the long side, 5, so these lengths do not form any sort of triangle.

__

Lengths 1, 2, √5 satisfy the Pythagorean theorem, so will form a right triangle.

  1² +2² = (√5)²

  1 + 4 = 5 . . . . . . Pythagorean theorem is satisfied

Plz help me and actully tell me the answer

Answers

Answer:

Step-by-step explanation:

Take 3.1 x 2.15 and 9.8 x 1.55 for your answer. Then round to the nearest tenth for estimate.

40 points please help

Answers

Answer:

[tex]\huge\boxed{-2}[/tex]

Step-by-step explanation:

Use any two points from the line.

Let them be:

(x1,y1) = (0,-2)

(x2,y2) = (-1,0)

Now,

[tex]\displaystyle Slope = \frac{y_2-y_1}{x_2-x_1} \\\\Slope = \frac{0-(-2)}{-1-0} \\\\Slope = \frac{2}{-1} \\\\Slope = -2\\\\\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

Can someone please help me please?

Answers

Answer:

I think option A is right answer

The sum of 46.2 and a number is 49.85 as shown below. What number should go into the box to complete the addition problem?

Answers

Answer: 3.65

Step-by-step explanation:

46.2 -49.85 =3.65

Meg received a 3% increase in pay, She was making $690/week

Answers

Answer:

the answer is $710.70

Step-by-step explanation:

690 x 52 (weeks in a year) = $35,880.00 x 3% = 1076.40

$1,076.40 + $35,880.00 = 36, 956.40 / 52 weeks = 710.70 per week

with the increase she got an additional $20.70 per week.

The amount that she is making after the increase will be $710.7 per week.

What is the percentage?

The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol ‘%’ is used to symbolize it.

Meg received a 3% increase in pay, She was making $690/week.

Then the amount that she is making after the increase will be

⇒ (1 + 0.03) × $690

⇒ 1.03 × $690

⇒ $710.7

The amount that she is making after the increase will be $710.7 per week.

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ2

Solve for X. Will give a lot of points. HELP!!!

Answers

Answer:

7).

RT = RS + ST

[tex]10 = (2x - 20) + (2x - 18) \\ 10 = (2x + 2x) + ( - 20 - 18) \\ 10 = 4x - 38 \\ 4x = 10 + 38 \\ 4x = 48 \\ { \boxed{x = 12}}[/tex]

8).

LN = LM + MN

[tex](5x - 2) = 12 + (x + 2) \\ (5x - x) = 12 + 2 + 2 \\ 4x = 16 \\ { \boxed{x = 4}}[/tex]

I hope this helps. I wasn’t sure how to put it into words.

Audrey went shopping at a kids' clothing store where the shirts and
pants were the same price. She bought 6 shirts and 8 pairs of pants.
She also bought a toy for $2. She spent a total of $100. How much did
each shirt or pair of pants cost?

Answers

100-2=98

6clothes+8clothes=14clothes.

98/14=7.

$7.

The difference of a and b is added to 4.​

Answers

Step-by-step explanation:

The difference of a and b is added to 4.

(a-b)+4

Which of the following represents a fraction that converts to a repeating
decimal with a value less than one ?
0.5 0.25 0.9 0.44...

Answers

0.44…

0.44… = 4/9, if you type that into a calculator you’ll see that the number 4 repeats forever
0.44…. Because if u calculate it it will keep repeating.

a circle has a radius of 4m. find the circumference of the circle show your worth and strictly answering used 3.14 for pi​

Answers

Answer:

25.12

Step-by-step explanation:

Circumference (C) = 2πr

Where r = radius

We want to find the circumference of a circle with a radius of 4m ( this means that r = 4 )

To do so we simply plug in the value of r into the circumference formula

Formula: C = 2πr

r = 4 ( note that it says use 3.14 for π )

plug in values

C = 2(3.14)(4)

Simplify

C = 25.12

plot function f on the graph f(x) = |1/2x - 2|​

Answers

Answer:

See attached

Step-by-step explanation:

Given function:

f(x) = |1/2x - 2|​

The function is plotted and it is below.

The graph of the function f(x) = | (x/2) - 2 | is attached with the answer the lines of the function meet at point 4 at the x-axis.

What is a graph?

A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.

The graph of the function f(x) = | (x/2) - 2 | is attached with the answer the lines of the function meet at point 4 at the x-axis.

Therefore graph of the function f(x) = | (x/2) - 2 | is attached with the answer the lines of the function meet at point 4 at the x-axis.

To know more about graphs follow

https://brainly.com/question/25020119

#SPJ2

Please answer correctly and no links​

Answers

Answer:

28

Step-by-step explanation:

-7 x 2 = -14

-14 x -2 = 28

Answer:

C. 28

Step-by-step explanation:

(-7)(2) = -14

(-14)(-2) = 28

Two negatives make a positive.

CAN SOMEONE PLZ HELP ME

Answers

Answer:

Slope intercept is y = mx+b.

SLOPE is m

and Y-INTERCEPt, where the thing touches the y axis is b.

The line touches the y axis at -6.

The slope is 2/3

y=2/3x-6

Step-by-step explanation:

1 6
2 7

Find the sum of
-1/2+6/7

Answers

Step-by-step explanation:

-1/2+6/7

Take LCM

-7+12/14

5/14 Answer

the answer is 5/14 ii believe:)

Find the 75th term of the arithmetic sequence -17,-13,-9

Answers

The answer is 279 hope this helps

There is a new food delivery company that charges $10 to deliver 3 meals and $16 to deliver
12 meals. If the charging rate remains constant, how much will it cost to deliver 9 meals?

Answers

Using a linear function, it is found that it will cost $14 to deliver 9 meals.

------------------------------

A linear function has the following format:

[tex]y = mx + b[/tex]

In which

m is the slope(rate of change).b is the y-intercept(value of y when x = 0).

------------------------------

To build the linear function, we use the two points given by the exercise:  (3,10), (12,16)

------------------------------

The slope is given by the change in y divided by the change in x, thus:

Change in y: 16 - 10 = 6Change in x: 12 - 3 = 9Slope: [tex]m = \frac{6}{9} = \frac{2}{3}[/tex]

Thus:

[tex]y = \frac{2}{3}x + b[/tex]

------------------------------

Using one of the point, we can find b.I am going to use (3,10), which means that when [tex]x = 3, y = 10[/tex]. Thus:

[tex]y = \frac{2}{3}x + b[/tex]

[tex]10 = \frac{2}{3}(3) + b[/tex]

[tex]2 + b = 10[/tex]

[tex]b = 8[/tex]

The cost of delivering x meals is given by:

[tex]y = \frac{2}{3}x + 8[/tex]

------------------------------

The cost of delivering 9 meals is y when x = 9, thus:

[tex]y = \frac{2}{3}(9) + 8 = 2\times3 + 8 = 6 + 8 = 14[/tex]

It will cost $14 to deliver 9 meals.

A similar problem is given at https://brainly.com/question/21010520

Solve (−5) • (−3). (1 point)

a
−15

b
−8

c
8

d
15

Answers

Answer:

a 15

Step-by-step explanation:

two negitive numbers equal a positive number :) ur welcomee

(x^4+1)(y'-x^5-3x)=4x^3.y

Answers

Answer:

vvvhnxjdhshdhrgrgdrhhdfehfhfh

Step-by-step explanation:

f jfbdhdnrbdjgmt

The surface area of the prism is ​

Answers

Answer:

You'll have to multiply 9x12x8x4x5 which is equal to 17,280

Karina is driving from her house to her cottage. If she drives at 10 kilometers per hour, she will arrive at 6 PM. If she drives at 15 kilometers per hour, she will arrive at 4 PM. How fast must she drive in order to arrive at 5 PM

Answers

Answer:

12.5 kilometers per hour

Step-by-step explanation:

[tex](10+15)/2=25/2=12.5[/tex]

Other Questions
___ are based on research while ______ are based on personal beliefs.a. facts and opinions b. opinions and facts c. common sense and opinions d. biases and opinions Scientific data is often presented in figure or graphical forms. Why are these useful tools for scientists? 48 divided by blank =6 2 + 2 3 + 3 4 + 4 What is the mean of 75,87,49,68,75,84,98 ? how does being tolerant affect the cultural environment? Lance has an aquarium in the shape of a rectangular prism completely filled with water that has a base area of 65 in and a height of 12 in. Lance pours all of its contents into a second aquarium, also in the shape of a rectangular prism, that has a height of 3 in. The water completely fills the second aquarium.What is the base area of this second aquarium?Enter your answer in the box. 4(x)+2 Is -18 what is x The working principle of a washing machine isA) reverse osmosis B) diffusionC) centrifugation D) dialysis Question 1Vitamin A is important for which of the following? (Select all that apply.)Immune functionProtein synthesisBone healthVision ackrabbits are capable of reaching speeds up to 40 miles per hour. How fast is this in feet per second? (Round to the nearest whole number.) 5,280 feet = 1 mile27 feet per second59 feet per second132 feet per second288 feet per second America is the world's largest producer and exporter of food. What is America's number one food export?Question 5 options:WheatCorn FIsh Soybeans Somebody please help me with my work nobody will help me Im crying B is the midpoint of AC and E is the midpoint of BD. if A(-9,-4), C(-1, 6), and E(-4, -3) find coordinates of D Please answer correctly and no links I will mark as brainlist! 25 points! Write the equation of a line that is parallel to y=0.75 and passes through the point (8,0) Will mark 1st person as brainliest A car takes 65.1 seconds to travel 1 mile. How long does it take the car to travel 4.3 miles? First round to the nearest whole number to find the estimated answer. Are there shape shifting people in the world? 5 Do you agree with Imrans decisions? What do you think of Garetts actions?Huhu help me plzzzzI will give you the brainliest!!!!!!!