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igomit [66]
3 years ago
7

The mathcounts sprint round competition consists of 30 problems with a time limit of 40 minutes. suppose you complete 20 sprint

round problems in 25 minutes. on average, how many times as long will you be able to spend on each remaining problem than you did on each of the first 20? express your answer as a common fraction.
Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
5 0

Answer:

6/5

Step-by-step explanation:

The average time you spent per problem for the first 20 problems is 25/20 = 5/4 minutes. There are 40 - 25 = 15 minutes remaining, and 30 - 20 = 10 problems remaining, so the average time per remaining problem is 15/10 = 3/2 minutes. Hence, you can spend

(3/2)/(5/4) = 6/5

times longer on the remaining problems.

MatroZZZ [7]3 years ago
4 0
The number of remaining problems is:
 30-20 = 10 problems.
 The amount of time remaining is:
 40-25 = 15minutes
 For the first 20 problems the time per problem is:
 t1 = 25/20 = 5/4 minutes
 For the remaining problems the time per problem is:
 t2 = 15/10 = 3/2 minutes
  Answer:
 
you will be able to spend about 3/2 minutes on each remaining problem 
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Annette [7]

Queremos encontrar las ecuciones de las circunferencias que definen el reloj dado.

Las ecuaciones son:

x^2 + y^2 = 16cm^2

x^2 + y^2 =  196cm^2

Lo primero que debemos hacer para escribir una ecuacion, es definir nuestro eje de coordenadas.

Pondremos el punto (0, 0) en el centro de la cartulina.

Debemos recordar que la ecuación de un circulo de radio R centrado en el punto (a, b) se escribe como:

(x - a)^2 + (y - b)^2 = R^2

En este caso tendremos dos ecuaciones de circulos, ambas centradas en el centro de la cartulina, que es el punto (0, 0).

Para el primer caso tendremos un radio R = 4cm, que es el circulo interno que contiene las horas 12, 3, 6, y 9.

Otro de radio R' = 14cm, que contiene el resto de horas.

Entonces las dos ecuaciones de los circulos seran:

x^2 + y^2 = (4cm)^2 = 16cm^2

x^2 + y^2 = (14cm)^2 = 196cm^2

Si quieres aprender más. puedes leer.

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7 0
2 years ago
A linear function contains the following points.
natima [27]

Answer:

5000

Step-by-step explanation:

7 0
3 years ago
Find the x-intercept and y-intercept of the line 4x - 3y= -12.
ladessa [460]

Answer:

x=3/4y+13  y=4/3x-4

Step-by-step explanation:

5 0
3 years ago
Laine reads 25 pages in 30 minutes. If Laine reads 200 pages at this same rate, how long will it take her
tester [92]
Set up a table.

Pages | Minutes
-----------------------
25. | 30
? | 200


One way is to cross multipy.
200 x 25 = 5,000
30 x ? = 5,000

So do 5,000 divided by 30 and you get your answer
3 0
3 years ago
Read 2 more answers
James gathered 12kg of nuts more than Henry gathered. What
docker41 [41]

Answer:

<u>6 kg</u>

Step-by-step explanation:

J = mass of nuts gathered by James

H = mass of nuts gathered by Harry

J = 12 + H

J = 3H

     3H = 12 + H

3H - H = 12 + H - H

     2H = 12

       H = 6 kg

J = 18 kg

7 0
3 years ago
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