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juin [17]
4 years ago
9

36 is 50% of what number?

Mathematics
2 answers:
krek1111 [17]4 years ago
5 0
x-searched\ number\\\\50\%=0.5\\\\36=0.5x\ \ \ \ |\cdot2\\\\x=72\\\\36\ is\ 50\%\ of\ 72.
BabaBlast [244]4 years ago
4 0
72
36=.5x
So if 36 is half of x then you multiply both sides by 2 which gives you

72=x
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I need help on numbers 3-4 but both are together and 7-8 both are together too plz help
Vikki [24]
3. 12h

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4. 11 floors

7.16d
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7 0
4 years ago
En las olimpiadas de Matemática. Roció represen a su colegio. La prueba consistía en 60 problemas. Cada respuesta correcta valía
PtichkaEL [24]

Answer:

Rocío respondió 43 preguntas correctas y 17 incorrectas.

Step-by-step explanation:

Dado que en las olimpiadas de Matemática, Rocío representó a su colegio, y la prueba consistía en 60 problemas, de los cuales cada respuesta correcta valía 4 puntos y por cada respuesta incorrecta había un punto en contra, y luego del examen, Rocío obtuvo un puntaje de 155, y ella respondió todas las preguntas y desea saber cuantas fueron correctas y cuantas incorrectas, para determinar dicha duda se debe realizar el siguiente calculo:

60 x 4 = 240

40 x 4 - 20 = 140

45 x 4 - 15 = 165

42 x 4 - 18 = 150

43 x 4 - 17 = 155

Por lo tanto, Rocío respondió 43 preguntas correctas y 17 incorrectas.

5 0
3 years ago
Which point on the number line shown would represent the fraction 3/20?
Dmitriy789 [7]

Answer:

Point A

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5 0
3 years ago
A passenger traub keaves a depot 1.5 hours after a freight train leaves the same depot. The passenger train is travleing 18 mph
skelet666 [1.2K]

Answer:

Speed of passenger train=18+30=48 mph

Speed of freight train=30 mph

Step-by-step explanation:

Let x be the speed of freight train.

Speed of passenger train=x+18 mph

Time taken by freight train=1.5+2.5=4 hrs

Time taken by passenger train to overtake the freight train=2.5 hrs

Distance=Speed\times time

By using this formula

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Distance traveled freight train=4x

According to question

2.5(x+18)=4x

2.5 x+45=4x

45=4x-2.5 x

45=1.5 x

x=\frac{45}{1.5}=30

Speed of freight train=30 mph

Speed of passenger train=18+30=48 mph

8 0
3 years ago
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Firdavs [7]
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3 years ago
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