Mathematics High School

Lin can run 12 laps around the track in 15 minutes. If she is running at the same rate for 20 miles, how long will it take her?

Please help

Answers

Answer 1

Answer:

Assuming 4 laps=1 mile, a standard track, then for every 5 minutes she runs a mile. 20 miles time 5 minutes each equals 100 minutes, or 1 hour and 40 minutes

Related Questions

When are two lines parallel

Answers

Answer:

Two lines are parallel if there slopes are equal and they have different y- intercepts.

Step-by-step explanation:  In other words perpendicular slopes are negative reciprocals of each other.

Find the range of the function for the domain {−3, 1, 4.5}.
y = −x + 1

A. {4, 2, −3.5}
B. {−2, 0, −5.5}
C. {−2, 2, −5.5}
D. {4, 0, −3.5}

Answers

Answer:

D. {4, 0, -3.5}

Step-by-step explanation:

domain (x) = {-3, 1, 4.5}

y= -x + 1

substituting domain/x-values into y= -x + 1

x= -3

y = -(-3) + 1

= 3+1

= 4

x= 1

y = -(1) + 1

= 0

x = 4.5

y = - (4.5) + 1

= -3.5

therefore, range ={4, 0, -3.5}

calulate the speed for a car that went a distance of 125km in 2 hours of time

Answers

Answer:

Step-by-step explanation:

speed = distance/time

distance = 125 km

time = 2 hours

speed = 125 / 2 = 62.5 km/h



For each figure answer the following questions

Answers

9514 1404 393

Answer:

  a) ∆ABC ~ ∆EDC by AA similarity

  b) ED/AB = 3/4

  c) 15 cm

Step-by-step explanation:

a) Two angles in each triangle are the same, so the AA similarity postulate can be used to declare the ∆ABC ~ ∆EDC. (Each triangle includes a right angle and angle C.)

__

b) Corresponding sides are ED/AB, DC/BC, EC/AC. The ratio of corresponding sides is ED/BC = (12 cm)/(16 cm) = 3/4.

__

c) Using the ratios identified above, we have ...

  DC/BC = 3/4 = x/(20 cm)

  x = 3/4(20 cm)

  x = 15 cm

Write the equation of the line that passes through the points (-3, 3) and (1, 2).

Answers

Y=-1/4x+2.25

Slope: -1/4
Y-intercept: 2.25

In AABC shown below, L is the midpoint of BC, M is the midpoint of AB, and N is the midpoint of
AC. If MN = 8, ML = 5, and NL = 6, find the perimeter of trapezoid BMNC.
Need help ASAP pls

Answers

Answer:

35

Step-by-step explanation:

see attached image.

perimeter of trapezoid = sides (6 + 8 + 5 + 8 + 8)

                                     = 35

the perimeter of trapezoid BMNC is 35

Given :

In  triangle ABC shown below, L is the midpoint of BC, M is the midpoint of AB, and N is the midpoint of AC. If MN = 8, ML = 5, and NL = 6

By midpoint theorem ,

[tex]BC= 2 \cdot MN\\BC=2 \cdot 8\\BC=16[/tex]

M is the midpoint of AB, AB= 2 times NL

BM=NL

BM=6

N is the midpoint of AC

AC is 2 times of ML

NC=ML

NC=5

Perimeter of trapezoid is  sum of all the sides

Perimeter of BMNC = BM+MN+NC+CB

Perimeter =[tex]6+8+5+16=35[/tex]

Learn more :  brainly.com/question/6206179

While riding in the car on the highway, Jason notices a sign that says the exit is one mile away and begins counting seconds. It took 60 seconds to get to the exit from that sign. How fast is in mph, is the car going?​

Answers

Free Points Say What---------------------------------------------------------

4/5-1/3
What is the answer

Answers

Answer:

7/15

Step-by-step explanation:

yeah

Answer:

7/15

Step-by-step explanation:

4/5-1/3 = [tex]\frac{3.4 - 5}{15}[/tex] = 7/15

I've searched everywhere and still don't have the answer!

Answers

Answer:

is a function and begins with y

Step-by-step explanation:

3 + 4 X 3-3 X 5
What is the answer

Answers

Remember the Rules of Operations (PEDMAS):

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

So with the expression 3 + 4 x 3 - 3 x 5 we know to multiply first. So let's multiply 4 x 3 and -3 x 5 first:

3 + 4 x 3 - 3 x 5

= 3 + 12 - 15

Then let's work out the rest of the expression!

3 + 12 - 15

= 15 - 15

= 0

Therefore we can determine that 3 + 4 x 3 - 3 x 5 = 0

I hope this helped! :)

??????????????????????????????

Answers

Answer:

Its B

Step-by-step explanation:

I got B.... I’m not sure tho but I hope it helps

The graph below shows a quadratic function f(x) and an absolute value function g(x).


Which of the following x-values are approximate solutions to the equation f(x)=g(x)? Select all that apply.

Answers

Answer: x=-2

Step-by-step explanation:

[11 +{-18 divided by 9}]x2

HELP! Please and thanks

Answers

Answer:

7 is the answer.

Step-by-step explanation:

In equations like this, you would solve the numbers in the parenthesis first, and then gradually do: Multiplication -> Division -> addition -> subtraction.

Therefore, -18 / 9 is -2.

-2 * 2 would be -4,

11 + (-4) would be 7.

Answer : 7.

What is an equation of the line that passes through the points (−6,−2) and (6,8)

Answers

Answer:

y=5/6x+3

Step-by-step explanation:

Name all the different types of factoring. Explain, in words, how to do each one.
And then give an example for each. (You do not have to solve your example).

Answers

1) Factoring out common factors. If each term in the polynomial shares a common factor.
Ex: 6x^2+3x = 3x(2x+1)

2) The sum-product pattern. If the polynomial is of the form x^2+bx+c and there are factors of c that add up to b.
Ex: x^2+7x+12 = (x+3) (x+4)

3) The grouping method. If the polynomial is in the form ax^2+bx+c and there are factors of ac that add up to b.
Ex: 2x^2+7x+3 = (x+3) (2x+1)

If you want more methods, go to Khan academy and search up review of factorization methods.

I hope this helps!

What is the number of solutions to this system?

A) One solution
B) No solution
C) Infinitely many solutions

Answers

I think it’s A because they only intersect once.

Please help quickly!!! How do you do this?

Answers

Answer:

Just find the area of each of them

Step-by-step explanation:

If Cade shoots 318 free throw baskets in 4 hours, about how many can he shoot in 7 hours?

Answers

Answer:

556.5 baskets

Step-by-step explanation:

We can write a proportion to solve

318 baskets     x baskets

----------------- = ----------------

4 hours              7 hours

Using cross products

318* 7 = 4 *x

2226 = 4x

Divide each side by 4

2226/4 = 4x/4

556.5 baskets

Answer:

556.5 baskets

Step-by-step explanation:

Write a proportion to solve

[tex]\frac{318}{4hours}[/tex] = [tex]\frac{x}{7 hours}[/tex]

Use the cross products

318 × 7 = 4 × [tex]x[/tex]

2226 = 4x

Divide both sides by 4

[tex]\frac{2226}{4x}[/tex] = [tex]\frac{4x}{4}[/tex]

556.5 baskets is your answer!

Point Q has coordinates of (x, y). Point
Q is rotated 90° clockwise to Point Q'.
What are the coordinates of Q'?
A (x,-y)
B (y, -x)
C (-x, -y)
D (-y, x)

Answers

D. Kiddo remember your formulas the 90° clockwise is (x,y) -> (-y,x)

What is the solution to the equation - 4 = 6?

Answers

Answer:

10

Step-by-step explanation:

Because 6+4 is 10. When u do these look at the number u know and add them together to get the first number

What is the factorization of the expression below?
16x2 - 25y2
A. (8x - 5y)(2x + 5y)
B. (8x - 5y)(2x - 5y)
C. (Ax-5744x + 5)
D. (4x - 5y)(4x - 5y)
SUBMIT

Answers

Answer:

Step-by-step explanation:

Dang kid


Colin invests £300 into his bank account.
He receives 5% per year compound interest.
How much will Colin have after 6 years?
Give your answer to the nearest penny where appropriate.

Answers

It’s 402€. Explains

Which of the following correctly represent the commutative property?
A. 8 - 7 + 5 = 7 - 8 + 5
B. (2 + 3) + 8 = 2 + (3 + 8)
C. 2 ÷ 4 = 4 ÷ 2
D. 8 × 5 × 4 = 5 × 8 × 4

Answers

Answer:

you stumped me.

Step-by-step explanation:

:/

Answer:

A. is the correct answer

Step-by-step explanation:

I believe don't quote me on this one

Evaluate if x = 4 helppp

Answers

Answer 4^2+4=20 Explanation x^2+x=? so 4^2(4x4=16)+ 4 = 20

3299 correct to 2 significant figures is:​

Answers

Answer:

DEMOS

Step-by-step explanation:

2- El terreno de juego del campo del Barça tiene una superficie de 8446 m ^ 2. ¿Cuál es su anchura si sabemos que la alargada es aproximadamente de 103m?

Answers

Answer:

82m

Step-by-step explanation:

Supongamos que el campo del Barça es rectangular.

El área de un rectángulo => Largo × Anchura

Área => 8446m²

Longitud => 103 m

Anchura =>?

8446m² => 103m × Ancho

Anchura => 8446m² / 103m

Anchura => 82m

slope of y=5/6 x-3
please help me!!

Answers

Answer:

The slope is 5/6 and the y intercept is -3

Step-by-step explanation:

What is 4x^3 multiplied by 8x^6?

Answers

Answer:

32X^9

Step-by-step explanation:

what is the slope that passes points (1,7) and (2,-4)​

Answers

Answer:

m = -11

Step-by-step explanation:

y=mx+b =D

Answer:

The slope is -11/1 which is -11.

Step-by-step explanation:

(Y2-Y1) / (X2-X1)

The sales tax on a $2.80 purchase is $0.14. The sales tax is what percent of the purchase price?

Answers

1.4%
Move the decimal over
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