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3 years ago

5

You have returned from a trip to Europe and still have $100 euro. How much in U.S. dollars should you receive if the exchange ra

te is USD/EUR 0.6991?
A. $100 USD
B. $169.91 USD
C. $143.04 USD
D. $69.91 USD

2 answers:

Zina [86]3 years ago

8 0

The answer to the question would be B which is 169.91 dollars

aleksklad [387]3 years ago

8 0

It is B $169.91 USD because .6991 times 100 is 169.91

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Solution to 3x+2y=24

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Answer:

it’s a multi step equation

Step-by-step explanation:

solve like a multi step

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3 years ago

Members of a college chemistry department agree to contribute equal amounts of money to make up a scholarship fund of $280. Then

Zarrin [17]

Answer:

7 members

Step-by-step explanation:

Lets say that the department has n members. If each member contributes with an equal amount x and make a total of $280, we know that:

n*x = 280

Where each one colaborated with:

n*x/n = 280/n

Or what is the same that: (as the n on the left eliminate themselves)

x = 280/n (*)

Now the department hires 3 more members, so we now have n+3 members. And we know that the pass from contributing x to contribute $30 less, it is, x-30 (I omit the $ symbol for simplicity). So, know we have:

x-30 = 280/(n+3)

We can replace x here by the formulation of x we did in the (*) equation:

( 280/n) - 30 = 280/(n+3)

using common denominator:

( 280/n) - 30 n/n = 280/(n+3)

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Cross multiplying the denominators:

( 280 - 30 n)*(n+3) = 280*(n)

280n - 30n^2 + 840 - 90n = 280n

Subtracting 280 n in both sides:

30n^2 + 840 - 90n = 0

Dividing both sides by 30:

-n^2 - 3n + 28 = 0

Factorizing this term (you can notice the factor immediately or solving with baskara resolution, I omit the baskara for simplicity):

-(n + 7)(n - 4) =0

So, n is equal to 4 and -7. As we are dealing with people we can not have -7 people, so we keep only n=4.

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3 years ago

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3 years ago

Read 2 more answers

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Evaluating the expression 11C3 is very simple to do.

If you are assuming that C is the notation for the combination.
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3 years ago

(2, -4), (x, y) , A , and B all lie on the line. Find an equation relating x and y.

frutty [35]

Answer:

An equation relating x and y is:

y = 3/4x - 5.5

Step-by-step explanation:

The slope-intercept form of the line equation

y = mx+b

where

m is the slope

b is the y-intercept

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$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

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Refine

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From the graph, it is clear

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y = mx+b

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Therefore, an equation relating x and y is:

y = 3/4x - 5.5

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3 years ago