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Crazy boy [7]
3 years ago
13

PLEASE HELP!!

Mathematics
1 answer:
kobusy [5.1K]3 years ago
5 0

Answer:

The average height of a 5-year-old boy is 98.9\ cm

Step-by-step explanation:

Let

x------> the ages of boys between 2 and 10 years old

y-----> the average heights in centimeters

we have

y=6.3x+67.4

so

For x=5 year-old-boy

substitute in the equation the value of x to find the value of y

y=6.3(5)+67.4=98.9\ cm

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What is the median or 6,7,10,12,15,
natulia [17]

Answer:

10

Step-by-step explanation:

The median is the number in the middle of a group

4 0
4 years ago
Una persona que está situada entre dos montañas emite un sonido, si percibe el primer eco a los 2 seg, y el siguiente a los 3 se
Goryan [66]

Answer:

1715 metros

Step-by-step explanation:

Lo que debemos hacer es calcular la distancia del primer y del segundo eco.

Debemos conocer la velocidad del sonido que en términos generales es 343 m/s, por lo tanto, la distancia sería igual a:

v = d/t => d = v*t

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d2 = 343*3 = 1029 metros

La separación sería la suma de ambas distancias así:

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1715 metros sería la distancia de separación entre ambas montañas.

3 0
3 years ago
How do u solve 1.2= k over 4
salantis [7]

1.2 = k/4

multiply both sides by 4,

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8 0
3 years ago
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See attached picture for solution:

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