2 years ago

Suppose your school cost for this term were $7600 and financial aid covered 3/4 of that amount

Mathematics

1 answer:

netineya [11]2 years ago

5 0

Financial aid would cover 5,700 and you would need to pay 1,900

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The life of light bulbs is distributed normally. the standard deviation of the lifetime is 25 hours and the mean lifetime of a b

Dominik [7]

The probability is 0.8997.

We will use a z-score to answer this question. z-scores are given by the formula
$z=\frac{X-\mu}{\sigma}$

With our information, we have
$z=\frac{622-590}{25}=\frac{32}{25}=1.28$

Looking this up in a z-table (http://www.z-table.com) we see that the area to the left of this (everything less than, up to this value) is 0.8997.

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3 years ago

1- un tinaco se llena en 8 horas utilizando 4 llaves. en cuanto tiempo se llenara con 7 llaves?

svetoff [14.1K]

Answer: 4.6 horas.

Step-by-step explanation:

Podemos calcular el tiempo necesario por una llave:

si sabemos que se llena en 8 horas con 4 llaves, entonces una sola llave va a tardar 4 veces 8 horas en llenar el tinaco, es decir, una sola llave tarda:

4*8h = 32 horas

ahora, si usamos 7 llaves, el tiempo necesario va a ser un septimo de eso:

(32 h por llave)/(7 llaves) = 32/7 horas = 4.6 horas.

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2 years ago

Subtract <br> -3 3/8 - 7/8

In-s [12.5K]

Answer:

-4 1/4 When you subtract -3 3/8 from 7/8 you will get this answer.

Hope this helps

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3 years ago

Read 2 more answers

Which of these steps is a step in constructing an inscribed regular hexagon using technology

Zanzabum

Create circle B with radius AB

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3 years ago

Solving systems of equations using substitution

Semenov [28]

Put x=-2 in x-y=-2
-2-y=-2
-y=0
y=0
x=-2
that's your answer.

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2 years ago