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Dmitrij [34]
3 years ago
11

How many boys are there in an introductory Chinese course if 390 students are enrolled and there are seven boys to every three g

irls?
Mathematics
1 answer:
jonny [76]3 years ago
5 0
39 I think because seven plus 3 is 10 and divide with 390 it will be 39
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√108<br><img src="https://tex.z-dn.net/?f=9%20%5Ctimes%20%5Cfrac%7B13%7D%7B20%7D%20" id="TexFormula1" title="9 \times \frac{13}{
ki77a [65]
I'm assuming your allowed to use a calculator for this? That's what I would do.
\sqrt{108}  = 10.39
To go about the fraction, take the whole number and times it by the denominator, then add in the numerator to create a new fraction(a whole one not mixed). Then simply divide the numerator by the denominator.
9 \times 20 = 180
180 + 13 = 193
193 is the new numerator and the new whole fraction is this and dividing it out gives you,
\frac{193}{20}  = 9.65
For the third one, just input it into a calculator,
2\pi + 3.4 = 9.68
4 0
3 years ago
Help me I'm in jeproady
olga nikolaevna [1]

Answer:

She subtracted 7x instead of dividing it. Personally, i wouldn't have done that. I would subtract the 14 first, then divide.

3 0
3 years ago
What is not another word for renter
larisa [96]
Leaseholder And Occupant
3 0
3 years ago
What is the solution to the system of equations?
zysi [14]

Answer:

x=3, y=-1

Step-by-step explanation:

x+y = 2  

x -y =4  



I will use elimination to eliminate the variable y.  Add the two equations together.

x+y = 2  

x -y =4  

-------------

2x = 6

Divide each side by 2

2x/2 = 6/2

x = 3

But we still don't know y

x+y =2

Substitute x=3 into the equation

3+y =2

Subtract 3 from each side

3-3 +y =2-3

y =-1

7 0
2 years ago
Read 2 more answers
Help?????????????????????
vazorg [7]
For a system to have no solution the equations would need to be parallel. Lines are parallel when they’re slopes are the same which can only be said for graph b

Graph B is the correct answer
3 0
3 years ago
Read 2 more answers
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