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3 years ago

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A letter to europe from the united states costs $0.80 to mail. a letter mailed within the united states cost $0.37. nancy mails

5 letters for $2.71, some to europe and some to the united states. how many letters did she send to europe?

1 answer:

densk [106]3 years ago

5 0

She only sen 2 to Europe.

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aksik [14]

Answer:2/3

Step-by-step explanation:

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Is the following statement a good definition? Why? An integer is divisible by 100 if and only if its last two digits are zeros.

kifflom [539]

The given statement is:
An integer is divisible by 100 if and only if its last two digits are zeros

The two conditional statements that can be made are:

1) If an integer is divisible by 100 its last two digits are zeros.

This is a true statement. If a number is divisible by 100, it means 100 must be a factor of that number. When 100 will be multiplied by the remaining factors, the number will have last two digits zeros.

2) If the last two digits of an integer are zeros, it is divisible by 100.

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Therefore, the two conditional statements that are formed are both true.

So, the option A is the correct answer.
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telo118 [61]

Answer:

$f(x)=-\frac{1}{8}(x-3)^2+3$

Step-by-step explanation:

We want to find the equation of the parabola with a focus of $(3,1)$ and directrix $y=5$ .

Considering the directrix, the quadratic graph must open downwards.

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Since the parabola turns downwards,

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$y=-\frac{1}{8}(x-3)^2+3)$ .

This is the same as

$f(x)=-\frac{1}{8}(x-3)^2+3)$ .

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monitta

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