Lin runs 5 laps around a track in 8 minutes. If Lin runs 21 laps at
the same rate, how long does it take her?
a) 13.13 minutes
b) 441 minutes
c) 33,6 minutes
d) 1.6 minutes

Answers

Answer 1

Answer:

It will take 25.2 minutes to complete 21 laps.

Step-by-step explanation:

The rate of covering 5 laps is:

v = 6/5

Therefore, the time taken to cover 21 laps is:

t = 21/v

t = 21*6/5

t = 25.2

Hence, it will take 25.2 minutes or 25 minutes 12 seconds for Lin to complete 21 laps.  


Related Questions

i need heelp solving plzz

Answers

Answer:

The anser is 5 hop this helps sorry if it is wrong

Step-by-step explanation:

You are traveling to a football game. You tell your friends you traveled 70 miles per hour while on the interstate. You know however, that at one point you glanced at your speedometer and it read 68 miles per hour. Which is your average speed and which is your instantaneous speed?

Answers

The average speed is 70 miles per hour and the instantaneous speed is 68

miles per hour.

The average speed is the total distance travelled divided by the elapsed time

while the instantaneous speed is the accurate speed covered by the object

at a given instant of time.

Mathematically,

average speed = total distance travelled by the object / total time taken by

the object

Instantaneous speed = distance of an instant / time of an instant.

Therefore,

The average speed is 70 miles per hour.

The instantaneous speed is 68 miles per hour.

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I need help with number 10

Answers

Answer:

[tex]\frac{-3xy}{z^{2} }[/tex]

Step-by-step explanation:

[tex]\frac{-24x^{2}y^{5}z}{8xy^{4}z^{3} }[/tex]

Lets divide like terms

-24/8 = -3

[tex]x^{2}[/tex]/[tex]x^{1}[/tex] = [tex]x^{1}[/tex]

[tex]y^{5}[/tex]/[tex]y^{4}[/tex] = [tex]y^{1}[/tex]

[tex]z^{1}[/tex]/[tex]z^{3}[/tex] = [tex]z^{-2}[/tex]

After diving like terms you are left with:

[tex]\frac{-3xy}{z^2}[/tex]

What is 90.5 divided by 3.75? My textbook doesn't the correct setup for equations like this.

Answers

Answer:

24.1333333

Step-by-step explanation:

A rectangle on a coordinate plane is translated 5 units up and 3 units to the left. Which rule describes the translation?

(x, y) → (x + 5, y – 3)
(x, y) → (x + 5, y + 3)
(x, y) → (x – 3, y + 5)
(x, y) → (x + 3, y + 5)

Answers

Answer:

3rd option

Step-by-step explanation:

A translation of 5 units up , in the positive y- direction means add 5 to the y- coordinate.

A translation of 3 units left, in the negative x- direction means subtract 3 from the x- coordinate.

Then translation rule is

(x, y ) → (x - 3, y + 5 )

Answer:

C

Step-by-step explanation:

Person above is correct. Edge 22

Each kit to build a castle contains 235 parts. how many parts are in four of the Kira?

Answers

This should give you an idea of how to solve

Can anybody answer this

Answers

Answer:

answer is letter A

Step-by-step explanation:

I just know I used a calculator

Parallel lines and Triangles H If a Il b, solve for x, and give the proper angle usage.

Answers

Answer:

3.75

Step-by-step explanation:

12x-29=4x+1

8x=30

x=3.75

(15/4)

Tomnhas read 11 pages of a 215 page book he will read 6 pages each day until he fi ishes the book which equation can be used to find the number of days D it will take tom to finish reading the book

Answers

Answer: 34 days

Step-by-step explanation:

To find out the amount of pages he needs to read each day at the rate of 6 pages/day is 204/6. (we divide 204 by 6 because that is 215-11, since he already read 11 pages) this is 34

A stereo is normally $540, and today is on sale for 25% off how much do you save by buying it today

Answers

Using the percentage concept, the amount saved by purchasing today is $135

Given the Parameters :

Normal price = $540Discount on sale = 25%

The amount saved saved by buying at the discounted price can be calculated thus :

Normal price × discount rate

Amount saved = $540 × 25%

Amout saved = $540 × 0.25

Amout saved = $135.

Hence, the amount saved by purchasing today is $135.

Learn more : https://brainly.com/question/25775672

Based on the information given the amount save by buying today is $135.

First step is to calculate the discount

Discount=540 - (25%×$540)

Discount=$540 - $135

Discount =$405

Second step is to calculate the amount save.

Saved amount=$540-$05

Saved amount=$135

Inconclusion the amount save by buying today is $135.

Learn more here:https://brainly.com/question/15817907

covert the equation 3x+2y=14 to slope intercept form

Answers

Step-by-step explanation:

[tex]3x + 2y = 14[/tex]

[tex]\Rightarrow 2y = - 3x + 14[/tex]

[tex]\Rightarrow y = -\frac{3}{2}x + 7[/tex]

PLEASE HELP!!!!!!!! A swimming club is conducting a vote to choose a mascot. There are 164 club members who want a dolphin for their mascot. These members represent 82% of the total number of club members. How many club members are there?
Group of answer choices

134

200

136

2,000

Answers

Answer:

Step-by-step explanation:

I think 200 I’m not that sure but I think so

A car is going 10 miles per hour when the driver hits the breaks. The car travels 3 feet after the brakes are applied. A little while later, the same car is going 20 miles per hour. This time, when the driver hits the brakes about how far does the car travel after the brakes are applied

Answers

Answer:

6

Step-by-step explanation:

10/3=20/x

20/10=2

x/3=3*2

x=6

Find the area of a trapezoid. With a base of 1 1/2 cm a height of 4 cm and a bottom base with 3 1/2 cm

Answers

Answer:

[tex]A=10cm^{2}[/tex]

Step-by-step explanation:

The formula to find the area of a trapezoid is,

Area = [tex]\frac{1}{2} *(a +b)*height[/tex]

(a+b) ⇒ Sum of the parallel sides

Let us solve now.

[tex]A =\frac{1}{2} *(a +b)*height[/tex]

[tex]A=\frac{1}{2} *(1\frac{1}{2} +3\frac{1}{2} )*4[/tex]

[tex]A=\frac{1}{2} *(\frac{3}{2} +\frac{7}{2} )*4[/tex]

[tex]A=\frac{1}{2} *(\frac{10}{2} )*4[/tex]

[tex]A=\frac{1}{2} *(5 )*4[/tex]

[tex]A=\frac{1}{2} *20[/tex]

[tex]A=10cm^{2}[/tex]

Hope this helps you.

Answer:

The area of trapezoid is 10 cm².

Step-by-step explanation:

Given :

[tex]\green\star[/tex] a = 1½ cm[tex]\green\star[/tex] b = 3½ cm[tex]\green\star[/tex] h = 4 cm

To Find :

[tex]\green\star[/tex] Area of trapezoid

Using Formula :

[tex]\star{\small{\underline{\boxed{\sf{\purple{Area_{(Trapezoid)} = \dfrac{1}{2}\Big(a + b\Big)h}}}}}}[/tex]

[tex]\orange\star[/tex] a + b = sum of parallel side[tex]\orange\star[/tex] h = height of trapezoid

Solution :

Finding the area of trapezoid by substituting the values in the formula :

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2}\Big(a + b\Big)h}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2}\bigg(1 \dfrac{1}{2} + 3 \dfrac{1}{2}\bigg)4}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2}\bigg(\dfrac{(1 \times 2) + 1}{2} + \dfrac{(3 \times 2) + 1}{2}\bigg)4}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2}\bigg(\dfrac{2 + 1}{2} + \dfrac{6 + 1}{2}\bigg)4}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2}\bigg(\dfrac{3}{2} + \dfrac{7}{2}\bigg)4}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2}\bigg(\dfrac{3 + 7}{2}\bigg)4}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2}\bigg(\dfrac{10}{2}\bigg)4}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2}\bigg( \cancel{\dfrac{10}{2}}\bigg)4}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2}\Big( \: 5 \: \Big)4}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{2} \times 5 \times 4}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} = \dfrac{1}{\cancel{2}} \times 5 \times \cancel{4}}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} =5 \times 2}}}[/tex]

[tex]{\dashrightarrow{\sf{Area_{(Trapezoid)} =10 \: {cm}^{2}}}}[/tex]

[tex]\star{\underline{\boxed{\frak{\red{Area_{(Trapezoid)} =10 \: {cm}^{2}}}}}}[/tex]

Hence, the area of trapezoid is 10 cm².

[tex]\rule{300}{1.5}[/tex]

If 3 rabbits can eat 12 carrots in 1 hour, how many carrots can 6 rabbits eat in a half-hour?

Answers

Answer:

72

Step-by-step explanation:

3x12=36

36x2=72

‼️Soonest right answer will get BRAINLIEST‼️
Which pair of figures could represent the pre-image and image in a translation?

Answers

9514 1404 393

Answer:

  I and III   or   II and IV

Step-by-step explanation:

Translation shifts the figure horizontally and/or vertically without changing its orientation.

Figures I and III are translated vertically by 7 and horizontally by 7 with respect to each other.

Figures II and IV are translated vertically by 8 and horizontally by 7 with respect to each other.

WILL GIVE BRAINLIEST PLZ HELP

Answers

Answer:

3: AB≅BC    5: ∠ABD≅∠CBD    6: BD≅BD     7: △DAB≅△DCB     7: SAS (side-angle-side)    8: CPCTC (corresponding parts of congruent triangles are congruent).

Step-by-step explanation:

I hope this helps you solve the proof.

What is the Slope of the equation y - x - 2
A 1
B -2
C 2
D 0 ​

Answers

It would be 1 most likely

Given the values in the table on the right come from a continuous function, y has at least how many zeroes? 0 1 2 3

Answers

Answer:

it's 3

Step-by-step explanation:

did the assignment :)

Answer:

D - 3

Step-by-step explanation:

Just did it on edge

someone please help me ASAP. I’ll mark brainliest. thank you <3

For each function identify the degree of the numerator and the denominator.

1. f(x)=(x+5)(x-2)(x-7)/(x+9)(x-6)

2. h(x)=(6x+7)(x-4)/(3x+9) (x) (x^2)

3. g(x)=(5x+8)(x-4)/(3x+9) (x)

Which function in problems 1-3 has a horizontal asymptote at y=0?

Answers

9514 1404 393

Answer:

numerator: 3; denominator: 2; slant aymptotenumerator: 2, denominator 4; y = 0 asymptotenumerator 2, denominator: 2; y = 5/3 asymptote

Step-by-step explanation:

We have to assume you intend everything to the right of the slash (/) to be denominator. Ordinarily, only the first factor would be considered denominator according to the Order of Operations.

ab/cd = (ab/c)d . . . according to the order of operations.

__

The degree of the numerator or denominator is essentially the number of factors involving x.

1. The numerator has 3 factors, hence degree 3. The denominator has 2 factors, hence degree 2. The degree of the numerator is 1 more than the degree of the denominator, so the function will have a slant asymptote.

  degrees: num/den = 3/2

__

2. The numerator has 2 factors, hence degree 2. The denominator has one binomial factor and 3 factors of x, hence degree 4. The degree of the denominator is higher than the degree of the numerator, so the function will have y = 0 as its horizontal asymptote.

  degrees: num/den = 2/4 --- y = 0 horizontal asymptote

__

3. The numerator has 2 factors, as does the denominator. Hence the degree of each is 2. The horizontal asymptote will be a constant equal to the ratio of the leading coefficients: y = 5/3.

  degrees: num/den = 2/2

I need help please!!


assume that the height of your cylinder is 8 inches. consider a as a function of r, so we can write that as a(r)=2πr2+16πr. what is the domain of a(r)? in other words, for which values of r is a(r) defined? part b: continue to assume that the height of your cylinder is 8 inches. write the radius r as a function of a. this is the inverse function to a(r), i.e to turn a as a function of r into. r as a function of a.

Answers

Step-by-step explanation:

The domain of A(r) is [tex]r \geq 0.[/tex] The expression for A(r) is

[tex]A(r) = 2\pi r^2 + 16\pi r[/tex]

Let's write A(r) as simply A and divide the equation by [tex]2\pi[/tex] to get

[tex]r^2 + 8r = \dfrac{A}{2\pi}[/tex]

We can complete the square on the left hand side by adding 16 to both sides:

[tex]r^2 + 8x + 16 = \dfrac{A}{2\pi} + 16[/tex]

[tex]\Rightarrow (r + 4)^2 = \dfrac{A}{2\pi} + 16[/tex]

Taking the square root of the equation above and then solving for r, we get

[tex]r = -4 \pm \sqrt{\dfrac{A}{2\pi} + 16}[/tex]

In this exercise we have to use our knowledge about cylinders to calculate the function that best represents its value:

[tex]r=-4+\sqrt{\frac{A}{2\pi} +16}[/tex]

The area domain of A can be written as:

[tex]A(r)=2\pi r^2+16\pi r[/tex]

Let's write A(r) as simply A and divide the equation by [tex]2 \pi[/tex]to get:

[tex]r^2+8r=\frac{A}{2\pi}[/tex]

Now we can sum on both sides like:

[tex]r^2+8X+16=\frac{A}{2\pi}+16\\(r+4)^2=\frac{A}{2\pi}+16[/tex]

Taking the square root of the equation above and then solving for r, we get:

[tex]r=-4+\sqrt{\frac{A}{2\pi} +16}[/tex]

See more about cylinders at brainly.com/question/3692256

PLS HELP
What is the distance between -3 and 2 on the number line?
-5
-1
1
5

Answers

Answer:

5

Step-by-step explanation:

-3 to 0 = 3

0 to 2 = 2

3+2=5

Answer:

5

Step-by-step explanation:

the distance means how far is it from one point to another. So you start at -3 and you go 3 right to zero, then two more right to 2, for a total of 5.

pls help with this i will mark brainlinest ​

Answers

Answer:

Malay ❖Ƭʜᴇ꧁ʙʀᴇɴ ᴊᴀᴄᴏʙ꧂๖ۣۜ

What is the slope of the line that passes through the points (−3, 1) and (1, −5) ?

1/2

−2/3

−3/2

I don't know.

Answers

Answer:

[tex]m = \frac{ - 5 - 1}{1 + 3} = - \frac{6}{4} = \color{green} \boxed{ - \frac{3}{2} }[/tex]

How do you solve t/3 = 10

Answers

Answer:first you subtract 10 - 3 and you get the answer which is 7.

Multiply 10 times 3 and it’s should be x = 30

Which absolute value function defines this graph?

Answers

Answer:

D

Step-by-step explanation:

what 2+3+5+6+7+8+9+10=

Answers

Answer:

50

Step-by-step explanation:

(2+3=5) +5 = 10

6+7 = 13

8+9=17

10

Then add them all together:

10+13+17+10=50

Answer:

50

Step-by-step explanation:

2+3=5

5+5=10

10+6=16

16+7=23

23+8=31

41+9=40

40+10=50

9 +10 plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz DO IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

19. The answer is 19

Step-by-step explanation:

9 + 10 = 19

Answer:

21 lol

Step-by-step explanation:

jiosxzjlxcjncnjc nmcnjjksdjkcxjkcxmkxcmkncxmkdm

Need help with this pls

Answers

Answer: -4

Step-by-step explanation:

ΔX = 2 – -1 = 3

ΔY = -3 – 9 = -12

Slope (m) = ΔY/ΔX = -12/3 = -4/1 = -4

Express 74% as a ratio

Answers

Answer: 74/100 or 37/50
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