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lisabon 2012 [21]
3 years ago
15

A rock climber climbs at a rate of 720 feet per hour. Write and solve an equation to find the number of minutes m it takes for t

he rock climber to climb 288 feet.
Mathematics
1 answer:
Lorico [155]3 years ago
7 0

Answer:

The equation is <em>y</em>=12<em>x</em>. It takes 24 minutes for the rock climber to get to 288 feet.

Step-by-step explanation:

Since we know there are 60 minutes in an hour, we can divide 720 by 60. This gives us 12. Therefore, for every minute, the rock climber gets 12 feet higher. Assuming <em>y </em>is the height in feet, and <em>x</em> is the time in minutes, we can create the equation <em>y</em>=12<em>x</em>. Now, to find how long it takes to get to 288 feet, we will substitute y with 288.

288=12<em>x</em>

288/12 = 12x/12

24 = x

Now, we have time in minutes that it takes to get to 288 feet.

Hope this helps!

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Read 2 more answers
Solving by elimination <br> -6x+6y=6 -6x+3y=-12
labwork [276]
So elimination method is basically adding the equations and canceling out variables. 
-6x + 6y = 6
-6x + 3y = -12
The eaiest way to solve is by multiplying the bottom equation by -1.
-6x + 6y = 6
 6x - 3y = 12
Now you add the eqautions.
3y = 18
Divde 3 from both sides.
y = 6
Now plug in 6 into any of the original two equations. Lets use the first one.
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Subtract 36 from both sides.
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Answer:

Respuesta D

Step-by-step explanation:

Paola afirma: Todo número compuesto par, se puede escribir como la multiplicación de factores primos.

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Edwin afirma: Todo número compuesto impar se puede escribir como la suma de dos números primos.

Esta afirmación es falsa. Note que al sumar dos números impares de la forma 2k+1 y 2m+1 para k distinto de m, se obtiene

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Basta con dar un ejemplo para ver que esto no pasa. Tomemos k=11. En este caso, k-2 = 9, el cuál no es un número primo. Entonces 11 no se puede  descomponer como la suma de dos números primos.

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