28. Tommy corre 3/4 de hora cada lunes, 30 minutos cada martes, media hora todos los miércoles, 1 1/4 horas todos los jueves y 2/3 de una hora los viernes. ¿Cuántas horas corre Tom de lunes a viernes? . a. 4 horas y 40 minutos b. 3 horas y 30 minutos c. 3 horas y 50 minutos d. 3 horas y 40 minutos 29. Tres amigos deciden realizar una prueba ciclística. La siguiente tabla muestra la distancia recorrida por cada uno en 1 hora. Nombre Distancia recorrida (Km) Bibiana 31.2 Carlos 22.3 Andrés 50.6 ¿Quién está en la última posición al cabo de 1 hora? A. Bibiana B. Carlos C. Andrés D. Empate AYUD

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

(8+64)^2= 5184 < answer

step-by-step explanation:

2^3 = 8

4^3= 64

(8+64)^2 = 5184