The sentence says the speed can be maintained for no more than 1640 feet.
The "no more" means 1640 feet or less ,so the equation would be d is less than or equal to 1640.
The correct equation is A.
Answer:
As angle B is a right triangle, the sides AB and CB are perpendicular to each other. From the property of all tangents to a circle given in the beginning it can be concluded that AB is a tangent of the circle
De acuerdo con un sistema de ecuaciones, tiene-se que los números son 31 y 84.
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- En el sistema de ecuaciones, tiene-se que los números son x e y.
- Suma de 115, o sea,

- <u>El número mayor es dos veces más 22 unidades que el otro</u>, o sea,

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Primero se encuenta el número menor, <u>reemplazando la segunda ecuación en la primera:</u>





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El número mayor es dado en <u>función de el menor</u>, o sea:

Los números son 31 y 84.
Otro problema resuelto por sistema de ecuaciones es dado en brainly.com/question/24637096
Answer:
And rounded up we have that n=421
Step-by-step explanation:
We know that the sample proportion have the following distribution:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by
and
. And the critical value would be given by:
The margin of error for the proportion interval is given by this formula:
(a)
And on this case we have that
and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
We assume that a prior estimation for p would be
since we don't have any other info provided. And replacing into equation (b) the values from part a we got:
And rounded up we have that n=421
Lwh = (3+3+6) (4) (7)
12 x 4 x 7 = 336