2 years ago

Solve the equation by using the Properties of Equality. 9x – 3 = 42

Mathematics

1 answer:

Naya [18.7K]2 years ago

3 0

Step-by-step explanation:

9x-3=42

9x=42+3

9x=45

9x/9=45/9

x=5

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"Two planes leave the airport at the same time. Plane 1 travels just 9 miles east from

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The answer is 41 miles

Imagine the diagonal distance is called c
Using Pythagorean theorem 40^2 + 9^2 = c^2
1600 + 81 = c^2
The square root of 1681 is 41
So c = 41

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3 years ago

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Olegator [25]

Answer:

1. -6

Step-by-step explanation:

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2 years ago

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Si un triángulo tiene una hipotenusa de 15 cm y un cateto que mide 12 cm, ¿cual es la longitud del otro cateto?

BartSMP [9]

Answer:

9cm

Explicación:

El teorema de pitagoras nos dice que la hipotenusa al cuadrado es igual a la suma de los catetos al cuadrado:

$c^{2} =a^{2} + b^{2}$

Donde c es la hipotenusa y a y b son los catetos.

Por lo cual, podemos reemplazar c por 15cm y a por 12cm :

$15^{2} =12^{2} +b^{2}$

Finalmente , debemos resolver la ecuación para b, así que b es igual a :

$225=144+b^{2} \\225-144=144+b^{2} -144\\81=b^{2} \\\sqrt{81} =b\\9=b$

Por lo tanto, la longitud del otro cateto es 9 cm

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2 years ago