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Aleks [24]
4 years ago
12

A truck drove at an average rate of 45 miles per hour on the highway and 20 miles per hour once it entered the city. If it took

the trip, which was 100 miles, in 3 hours, how much of it was in the city?
Mathematics
2 answers:
SIZIF [17.4K]4 years ago
7 0
45 * 1.6 + 20 * 1.4 = 100
72 + 28 = 100
100 = 100
denis-greek [22]4 years ago
4 0

Answer:

28

Step-by-step explanation:

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inna [77]

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If 0.2 = 20%, The probability that 1 person will be infected is 100%, according to theory.

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What are the roots of the polynomial equation? x² + 7x + 12 = 0 Enter your answers in the boxes. x1= x2=
oksian1 [2.3K]
The equation factors as
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3 0
3 years ago
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Se vendieron un total de 430 boletos para la obra de teatro escolar. Los boletos eran o de adulto o de estudiante. Se vendieron
BartSMP [9]

Resolviendo un sistema de ecuaciones, veremos que se vendieron 250 boletos de adulto.

<h3>¿Cuántos boletos de adulto fueron vendidos?</h3>

Definamos las variables:

  • x = boletos de adulto vendidos.
  • y = boletos de estudiantes vendidos.

Se vendieron un total de 430 boletos, entonces:

x + y = 430

Y se vendieron 70 boletos de estudiante menos que boletos de adulto:

y = x - 70

Tenemos el sistema de ecuaciones:

x + y = 430

y = x - 70

Para resolverlo, podemos reemplazar la segunda ecuación en la primera:

x + y = 430

x + (x - 70) = 430

2x = 430 + 70 = 500

x = 500/2 = 250

Se vendieron 250 boletos de adulto.

Sí quieres aprender más sobre sistemas de ecuaciones:

brainly.com/question/13729904

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5 0
2 years ago
How to figure out the equation 3/5 / 2/3
posledela

Answer:

2/5

Step-by-step explanation:

3/5 / 2/3

3/5 ÷ 2/3

Convert ÷ sign into multiplication, that will turn 2/3 into 3/2

3/5 X 2/3

Divide by 3

3/5 by 3

1/5

2/3 by 3

2/1

1/5 X 2/1

2/5

6 0
3 years ago
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valina [46]
The answer maybe 125.
6 0
3 years ago
Read 2 more answers
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