Mai runs around a 400 meter track at a constant speed of 250 meters per minute. How many minutes does it take Mai to complete 4 laps on the track? Explain or show your reasoning please please please

Answers

Answer 1
4 laps is 1,600 meters, and she runs 250 meters per minute. So you just divide 1,600 by 250 and the answer is 6.4 minutes

Related Questions

Table
Food - 1/3
Housing - 1/3
Medical Care - 1/4

This year, the managers of the farm will change the fraction of the budget for housing to 1/8 but will leave the fraction of the budget for food and medical Care the same. Again, the remaining portion of the budget will be for maintenance expenses. What is the difference between the fraction of the budget for maintenance this year and last year?

Answers

Before budget change :

Maintenance = 1 - 1/3 - 1/3 - 1/4 = 1/12

After budget change :
 
Maintenance = 1 - 1/3 - 1/8 - 1/4 = 7/24

Difference in budget for maintenance = 7/24 - 1/12 = 5/12

Answer:

[tex]\frac{5}{24}[/tex]

Step-by-step explanation:

Previous year table .

Food - [tex]\frac{1}{3}[/tex]

Housing - [tex]\frac{1}{3}[/tex]

Medical Care - [tex]\frac{1}{4}[/tex]

So, total =[tex]\frac{1}{3}+\frac{1}{3}+\frac{1}{4}[/tex]= [tex]\frac{11}{12}[/tex]

Since we are given that  the remaining portion of the budget will be for maintenance expenses.

So, maintenance expenses = [tex]1-\frac{11}{12}=\frac{1}{12[/tex]

Present year table

Food -[tex]\frac{1}{3}[/tex]

Housing -[tex]\frac{1}{8}[/tex]

Medical Care - [tex]\frac{1}{4}[/tex]

So, total =[tex]\frac{1}{3}+\frac{1}{8}+\frac{1}{4}=\frac{17}{24}[/tex]

Since we are given that  the remaining portion of the budget will be for maintenance expenses.[tex]1-\frac{17}{24}=\frac{7}{24}[/tex]

The difference between the fraction of the budget for maintenance this year and last year = 7/24 - 1/12 = 5/24

Hence the difference between the fraction of the budget for maintenance this year and last year is 5/24

             

Find the unit rate.

625 revolutions in 223 seconds

The unit rate is ___
revolutions per second.

Answers

27.17 revolution per seconds

Step-by-step explanation:

One number is bigger than another by 406. If the bigger number is divided by the smaller one, you’ll get the quotient 3 and remainder 66. Find the numbers.

Answers

The larger number is 576, the smaller number is 170.

Let x = the larger number and y = the smaller number.

We know that the larger number is 406 larger than the smaller one; therefore
x = y + 406

We also know
[tex]\frac{x}{y}=3\frac{66}{y}[/tex]

Substituting for x we have:
[tex]\frac{y+406}{y}=3+\frac{66}{y}[/tex]

When we convert mixed numbers to improper fractions, we multiply the whole number by the denominator and add the numerator:
[tex]\frac{y+406}{y}=\frac{3y+66}{y}[/tex]

Since the denominators are the same, we can just set the numerators equal
y+406=3y+66

We cannot have a variable on both sides, so we will subtract y from both sides:
y+406-y=3y+66-y
406=2y+66

Subtract 66 from both sides:
406-66=2y+66-66
340=2y

Divide both sides by 2:
340/2 = 2y/2
170=y

The smaller number is 170.  Since the larger number is 406 larger, then it is 170+406=576.
Final answer:

To find the numbers, we can set up a system of equations and solve it using substitution.

Explanation:

To find the numbers, we can set up a system of equations based on the given information. Let's call the bigger number 'x' and the smaller number 'y'. We know that x is bigger than y by 406, so we can write the equation x = y + 406. We also know that when x is divided by y, the quotient is 3 and the remainder is 66. This can be expressed as the equation x = 3y + 66.

We can solve this system of equations by substitution. First, we substitute the expression for x from the first equation into the second equation:

3y + 66 = y + 406

Next, we can subtract y from both sides of the equation:

2y + 66 = 406

Then, we subtract 66 from both sides:

2y = 340

Finally, we divide both sides by 2 to solve for y:

y = 170

Now we can substitute the value of y back into the first equation to find x:

x = 170 + 406 = 576

Therefore, the numbers are 576 and 170.

Learn more about Solving Systems of Equations here:

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10 times as much as 0.5 is

Answers

Hello!

10 x 0.5 = 5
That is your answer.

Enjoy.
~Isabella
0.5 x 10 = 5 the answer is 5 
5 is 10 times greater than 0.5

Which of the following values is closest to the mean for the set of data shown below?
99, 78, 56, 11, 43, 22, 16, 31, 49, 28, 37, 29 38, 34

Answers

The mean of the given set of numbers is approximately 40.07, determined by summing all the numbers in the set and then dividing by the count of numbers in the set.

The question asks for the mean of a set of numbers. The mean is found by adding all the numbers in a set and then dividing by the total number of values in the set. To find the mean for the given data set (99, 78, 56, 11, 43, 22, 16, 31, 49, 28, 37, 29, 38, 34), we first add all the numbers:

99 + 78 + 56 + 11 + 43 + 22 + 16 + 31 + 49 + 28 + 37 + 29 + 38 + 34 = 561.

Next, we divide by the number of values, which is 14:

Mean = 561 ÷ 14 = 40.07. Therefore, the mean of the data set is approximately 40.07.

Is the sum of 3√2 and 4 √2 rational or irrational? Explain your answer.

Answers

The answer is irrational. Any irrational number doubled is still irrational.

Sum of 3√2 and 4√2 is an irrational number.

What are irrational numbers?

" Irrational numbers are those numbers which cannot be written in fraction or rational form."

According to the question,

Suppose 3√2 + 4√2 be a rational number.

which can be expressed in form of (p / q) form such that 'q' does not divides 'p'

   3√2 + 4√2 = (p / q)

⇒ 7√2 = ( p / q)

Squaring both the sides we get,

  49 × 2 = ( p² / q² )

⇒ 2 ×(49q²) =  p²  

⇒ p is an even number

⇒p = 2k , k≠0

Therefore,

2 × ( 49q²) = (2k)²

⇒2×(49q²) = 4k²

⇒q² = (2k² / 49)

Both p and q are even which implies 'q' divides 'p'.

It is contradictory to our supposition,

Therefore, 3√2 + 4√2  is an irrational number.

Learn more about irrational number here

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6 3/4 need to have 12 cups

Answers

so the answer is 5 1/4 or 21/4

A straight line equation y=1/2x+1 the point p lies on the straight line.p has a y-coordinate of 5. Find the x-coordinate of p

Answers

we have that
y=(1/2)x+1

we know that
the point p has a  y-coordinate of 5

therefore
I substitute the value of y = 5 in the equation of the line
5=(1/2)x+1--------> 5-1=(1/2)x------> 4=(1/2)x-----> 8=x
x=8

the answer is 
the x coordinate of p is x=8

an interior decorator bought 12 1/2 yards of material to make drapes. He used 8 2/3 yards on 1 pair of drapes. How much material does he have left?

Answers

25/2-26/3
75/6-52/6=23/6
3 5/6 yds.

i need help I have to find the area of the composite figure

Answers

Try cutting them into two separate squaesand finding the areas separately then adding the areas. the first square would be 20 x 21 which would be 420 and the second area could be found using 18 x 18 whiichwould be 324. If you add 420+324, you get the area of the whole shapewhich would be 744. I hope this helps :P
 
We divide the figure into two pieces, as shown in the attached diagram.

We get a rectangle with dimensions [tex]20 \ cm \times 21 \ cm[/tex] plus a square with dimensions [tex]18 \ cm \times 18 \ cm[/tex]. The area of the rectangle is [tex]420 \ cm^2[/tex] and the square is [tex]324 \ cm^2[/tex], which together add up to [tex]744 \ cm^2[/tex].

A bowl of fruit contains 3 apples, 4 bananas, 2 pears and 1 orange. Aminata chooses one piece of fruit at random. What is the probability that she chooses

i) a banana,

ii) a mango?

Answers

i) a banana because a banana has more to it
She would probaly pick a banana cause it would be 4:10 ratio
so the answer would be A. banana

In the diagram below, which edges of the prism are parallel to AD ? (Select all that apply.)

DH
BC
EF
FG

Answers

I would have to say BC because its directly across from AD and it also could be EH but thats not a choice.

Given is the shape of a rectangular prism. All the parallel edges are diagonally opposite to each other, it means that parallel edges directly face opposite to each other and they do not have any common vertex. So we have two sets of parallel edges that are {AB, CD, EF, and GH} and {AD, BC, EH, and FG}.

It says to select all edges from the given options that are parallel to AD.

Given options are :- 1. DH, 2. BC, 3. EF, 4. FG.

We have AD ║ BC ║ EH ║ FG.

Hence, only BC and FG are the final answers.

what is (x-5)(x-3)=10 as a quadratic equation

Answers

Use the FOIL method for (x - 5)(x-3)

FOIL = First, Outside, Inside, Last

x(x) = x²
x(-3) = -3x
-5(x) = -5x
-5(-3) = 15

x² - 3x - 5x + 15 = 0

simplify by combining like terms

x² - 3x - 5x + 15 = 0
x² - 8x + 15 = 0

x² - 8x + 15 = 0 is your answer

hope this helps

Lola takes the train from Paris to Nice. The distance between the two cities is about 900,000 meters. If the train travels at a speed of 180 kilometers per hour, how long will it take Lola to travel from Paris to Nice?

Answers

Answer:

It will take 5 hours for Lola to travel from Paris to Nice.

Step-by-step explanation:

Lola takes the train from Paris to Nice. The distance between the two cities is about 900,000 meters.

We will convert this to km.

1000 meter = 1 km

900000 meter = [tex]\frac{900000}{1000}[/tex] = 900 km

The train travels at a speed of 180 kilometers per hour, so time taken to travel from Paris to Nice will be = [tex]\frac{900}{180} =5[/tex] hours

Hence, it will take 5 hours for Lola to travel from Paris to Nice.

Jack is sharing 3 bananas with 3 Friends. Which expression represents the amount each one will get if they share them equally?

Answers

they will each get 1 banana can i get brainiest please i was first and i barley have any
To be clear, there are three bananas, not 3 per friend?

If so then each friend would get one banana. because 3/3=1

Is this what you are asking?

What is the measure of the missing angle

Answers

The angles of any triangle = 180degrees
75+40=115  180-115=65
Angles of a straight lines = 180degrees
180-65= 115
Your answer is the second option - 115degrees

Answer:

115

Step-by-step explanation:

i did the test

A rectangle is drawn on a coordinate plane. Three vertices of the rectangle are points A(−6,5) , C(4,−3) , and D(−6,−3) . Point B is the fourth vertex of the rectangle.

What is the distance from point A to point B?
K12 grade 6th -MTH

Answers

B should be (3, 6).
If you plot this on a seperate piece of paper, then you can see that point B, is 7 spaces away from A. Hope this helps!:)
BTW, I use K12 as well! Do you use VAVA?
~Scarlett

Answer:

The correct answer is 10.

Explanation:

I took the test and Aced it. Aka, got 100%

The answer top guy gave is incorrect.

Guarantee .

Hope this helps.

7x to the fourth power- 5x to the fourth power

Answers

Answer:
7x ^4 - 5x^4
2x^4



What is the measure of ∠DEG?
A) 133°
B) 103°
C) 77°
D) 67°

Answers

Hmmmmmm
Let me think for a second

Hello!

To do this you have to find one of the missing angles.

Three angles of a triangle equal 180 so

180-47-30=103

A stright line has a degree of 180

180-103 = 77 which is the answer

Let f(x)=−1/2(x+2)^2+5 . What is the average rate of change for the quadratic function from x = −3 to x = 1? Enter your answer in the box.

Answers

Final answer:

The average rate of change of the function f(x) from x = -3 to x = 1 is -0.625, calculated using the values of f(-3) and f(1) in the average rate of change formula.

Explanation:

The average rate of change of a function f(x) from x = a to x = b is computed by finding the difference in function values at these points and dividing by the difference in x values, following the formula (f(b) - f(a)) / (b - a). To apply this to the quadratic function [tex]f(x) = -1/2(x + 2)^2 + 5[/tex] from x = -3 to x = 1, we evaluate f at both -3 and 1 and use these results in our formula.

First, find f(-3):
[tex]f(-3) = -1/2(-3 + 2)^2 + 5 = 4[/tex]

Then, find f(1):
[tex]f(1) = -1/2(1 + 2)^2 + 5 = 1.5[/tex]

Now, we calculate the average rate of change:
(f(1) - f(-3)) / (1 - (-3)) = (1.5 - 4) / (1 - (-3)) = -2.5 / 4 = -0.625

Therefore, the average rate of change of the function f(x) from x = -3 to x = 1 is -0.625.

Felicia put $85 into a CD that pays 3.8% interest. According to the rule of 72, approximately how long will it take for her money to double ?

Answers

The answer is 18.9 years. I hope this helped :)

Answer:

18.9 years.

Step-by-step explanation:

We have been given that Felicia put $85 into a CD that pays 3.8% interest.

We know that rule of 72 gives us the time it will take an amount to be double, when we divide 72 by the interest rate.

Upon dividing 72 by 3.8 we will get,

[tex]\text{Time it will take to double Felicia's money}=\frac{72}{3.8}[/tex]

[tex]\text{Time it will take to double Felicia's money}=18.9473684\approx 18.9[/tex]

Therefore, it will take approximately 18.9 years for Felicia's money to double.

the area of a baseball field bounded by home plate, first base, second base, and third base, and third base is a square. If a player at first base throws the ball to a player at third base, what is the distance the player has to throw?

Answers

it's C, [tex]\sqrt{16,200}[/tex]

Final answer:

The distance a player has to throw the ball from first base to third base is the length of the diagonal of the square field. Using the Pythagorean theorem, this distance is found to be approximately 127.28 feet.

Explanation:

If the baseball field is a square, then when a player throws the ball from first base to third base, the player is throwing the ball along the diagonal of the square. To calculate the distance of the throw, which is the length of the diagonal, we can use the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b).

Since the bases form a square, both sides a and b are equal in length.

The formula we use is c = √(a² + b²), where 'c' would be the diagonal distance. If we assume the side of the square (the distance from home plate to first base, or from first base to second base, and so forth) is 90 feet, which is a standard distance in a baseball diamond, then we can plug 90 feet in for both 'a' and 'b' to calculate the diagonal:

c = √(90² + 90²)
= √(8100 + 8100)
= √(16200)
= 127.28 feet (approximately).

Therefore, the distance the player has to throw from first base to third base is about 127.28 feet.

A chess team has 26 members. However, only 16 members attended the last meeting: half of the girls attended but all of the boys attended. How many boys are on the chess team?

Answers

Answer:

6 boys

Step-by-step explanation:

if all the boys(x) were at the meeting but only half the (y), you would have two equations : x+y=26 and x+y/2 = 16. Solving the system gives you 6 boys 20 girls.

−3z−(−z−2) Simplify to create an equivalent expression.
a. −4z+2
b. −2z−2
c. −2z+2
d. 4z+2

PLEASE HELP! :)

Answers

-3z - (-z - 2)

In order to find the expression equivalent to our given expression, we have to simplify our given expression :)

-3z + z + 2

**Remember : the "z" and "2" become a positive because a negative times a negative is always a positive!**

Now, add like terms.

(-3z + z) + 2

Simplify.

-2z + 2

Look at our given answer choices.

Our answer is c. -2z + 2

~Hope I helped!~

Bill spent a total of $95 at the grocery store. Of this amount, he spent $38 on fruit. What percentage of the total did he spend on fruit?

Answers

40%.
38/95= 0.4
0.4 * 100 = 40

I WILL MAKE BRAINIEST :)

Joyce wants to mix granola and raisins together to make a snack for her class. Granola costs $2 per pound and raisins cost $4.50 per pound. Joyce is willing to spend $37.50 and wants to make 15 pounds of trail mix.

Which system of equations could Joyce use to figure out how many pounds of granola (g) and raisins (r) she should buy?

A) 35 pounds
B) 36 pounds
C) 54 pounds
D) 72 pounds

Answers

the correct answer is c

help me please i do not understand it.

Answers

Answer:y = 2x + 4

Explanation:

1) The slope - intercept form is of the kind y = mx + b, where m is the slope and b is the y-intercept.

2) Given two points you can find the slope (using the two points) and then the equation using one of the points.

3) slope = m = Δy / Δx

points given (3,10) , (0,4)

m = [y2 - y1] / [x2 - x1] = [10 - 4] / [3 - 0] = 6 / 3 = 2

4) equation

y - y2
-------- = m
x - x2

  y - 4
---------- = 2
  x - 0

=> y - 4 = 2 (x - 0)

y - 4 = 2x

y = 2x + 4


Number 13a and 13b, please.

Answers

Both are true.
a) The box dimensions in terms of cube size are 12 x 1 x 5. The product of these is 60.

b) The product of box dimensions is 6 x (1/2) x (2 1/2) = 3 x (2 1/2) = 7 1/2 units³.

A cylinder has a radius of 16 m and a height of 9 m. What is the approximate surface area of the cylinder? Use 3.14 for π. A. 603 m2 B. 904 m2 C. 2512 m2 D. 14,469 m2



ANSWER IF YOU KNOW THE ANSWER!!!!!!!!!!!!!!!!!!!!
IF THE ANSWER IS WRONG I WILL REPORT YOU!!!!!!!!!!!!!

Answers

The answer is D. 2,512 m^2

Given: π = 3.14; r = 16 m; h = 9 m
A = 2πrh + 2πr^2; Where π = pi; r = radius; h = height
A = 2(3.14)(16)(9) + 2(3.14)(16)^2
   = 2(452.16) + 2(803.84)
   = 904.32 + 1,607.68
   = 2,512 m^2

ricardo's recipe for 4 loaves of bread requires 2/3 cup of olive oil. He only wants to make 1 loaf. Ricardo makes a model to find out how much oil he needs to use. He folds a piece of paper into three parts and shades two parts. Then he folds the paper into four parts and shades 1/4 of the shaded part. Ricardo decides he needs 1/4 cup of olive oil. Is he right? Explain

Answers

He needs 1/6 cup since 2/3 times 1/4 equals 1/6. he isn't right

Answer:

Ricardo is wrong.

Step-by-step explanation:

Ricardo's recipe for 4 loaves of bread requires 2/3 cup of olive oil.

Now we are given that he wants to make 1 loaf.

So, 4 loaves requires cup of oil = [tex]\frac{2}{3}[/tex]

So, 1 loaf requires cup of oil =  [tex]\frac{\frac{2}{3}}{4}[/tex]

                                               =  [tex]\frac{2}{12}[/tex]

                                               =  [tex]\frac{1}{6}[/tex]

Thus he requires 1/6 cup of oil to make 1 loaf .

While he decided he needs 1/4 cups .

So, Ricardo is wrong

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