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2 years ago

One US dollar is currently worth 0.79 euro (€). If you exchange $522 for euros, how many euros will you have?

Mathematics

2 answers:

Alecsey [184]2 years ago

5 0

it should be 412.38 but thats what i got on my math

yaroslaw [1]2 years ago

5 0

Answer: $412.38\text{ euros}$ .

Step-by-step explanation:

We are given that the worth of one dollar in euros = $0.79\text{ euro}$

If we exchange $522 for euros, then to calculate the amount in euros we multiply the value of one dollar to 522 we get

$522\times0.79=412.38\text{ euro}$

Therefore If you exchange $522 for euros, then we will get $412.38\text{ euros}$ .

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Calculate the resistance of a piece of aluminum wire with a diameter of 100 mils and a length of two miles, at 68°F. Hint: Be su

Oduvanchick [21]

First you need to know the formula of the Resistance(R) of a conductor, which is:

$R = \frac{K*L}{CM}$ -- (A)

Where,
R = Resistance of the wire = ?
K = Specific resistance of the wire(In this case Aluminum at 68°F) = 17.02 ohm-circular-mil-foot
L = Length of the wire(in feet)
CM = Circular mil Area(In inches)

Now in order to use the above formula(A), we have to first convert TWO quantities:
1) The length of the wire(from miles to feet)
2) Mils to Circular mil Area

1.
The length of the wire given = 2 miles
The length of the wire(In feet) = 10560 ft
2.
Since the mils given = 100 mils.
Therefore,
Circular mils(Circular mil Area) = mils x mils = 100 x 100 = 10000

Now plug-in the values in equation(A):

A=> R = $\frac{17.02 * 10560}{10000 }$

R = 17.97 ohms

Ans: Resistance of the aluminum wire = 17.97 ohms.

-i

4 0

2 years ago

Solve for<br> a. 7a-2b = 5a b

Nookie1986 [14]

For this case we have the following expression:

$7a-2b = 5ab$

From here, we must clear the value of a.

We then have the following steps:

Place the terms that depend on a on the same side of the equation:

$7a - 5ab = 2b$

Do common factor "a":

$a (7 - 5b) = 2b$

Clear the value of "a" by dividing the factor within the parenthesis:

$a =\frac{2b}{7-5b}$

Answer:

The clear expression for "a" is given by:

$a =\frac{2b}{7-5b}$

8 0

2 years ago

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A college admissions office uses the following linear equation to predict the grade point average of an incoming student: x = 0.

kramer

A college admissions office uses the following equation to predict the grade point average of an incoming student:

z = 0.003x + 0.8y − 4,

where z is the predicted college GPA on a scale of 0 to 4.3, and x is the sum of the student’s SAT Math and SAT Verbal on a scale of 400 to 1600, and y is the student’s high school GPA on a scale of 0 to 4.3. The college admits students whose predicted GPA is at least 2.3.

Will a student with SATs of 1050 and high school GPA of 3.0 be admitted

Answer:

A. No because Z = 1.55 which is less than the required predicted college gpa of 2.3 for admission.

Step-by-step explanation:

Z = 0.003x + 0.8y - 4

X = sat score

Y = high school gpa

Z = predicted college gpa

X =1050

Y = 3.0

Z = .003 *(1050) + 0.8*(3.0) -4

Z = 1.55 which is less than the required predicted college gpa of 2.3 for admission