Answer:
³/5
Step-by-step explanation:
Total = 5 units
Girls = 3 units
~if ⅔ of the girls wear braces
= 2units of girs wear braces
Boys = 2 units
~if ½ of the boys wear braces
= 1unit of boys wear braces
Hence, 2units + 1unit =3 units of the class wears braces.
Total pupils = 5units
total that wear braces out of the whole class = 3/5
i believe it would be: 1/2y = x
y = 2.5
First distribute the -3 to 4x + 3
It'll be -12x - 9
Then distribute 4 to 6x+1
It'll be 24x+4
-12x - 9 + 24x + 4 = 41
Add the like terms
12 x -5 = 41
12 x = 46
x = 46/ 12
In fractions the answer is 23/6
In decimals the answer is 3.84
Let me know if you need more help :)
The group paid $ 5250 at first city and $ 6250 at second city
<u>Solution:</u>
Let x = the charge in 1st city before taxes
Let y = the charge in 2nd city before taxes
The hotel charge before tax in the second city was $1000 higher than in the first
Then the charge at the second hotel before tax will be x + 1000
y = x + 1000 ----- eqn 1
The tax in the first city was 8.5% and the tax in the second city was 5.5%
The total hotel tax paid for the two cities was $790
<em><u>Therefore, a equation is framed as:</u></em>
8.5 % of x + 5.5 % of y = 790

0.085x + 0.055y = 790 ------- eqn 2
<em><u>Let us solve eqn 1 and eqn 2</u></em>
<em><u>Substitute eqn 1 in eqn 2</u></em>
0.085x + 0.055(x + 1000) = 790
0.085x + 0.055x + 55 = 790
0.14x = 790 - 55
0.14x = 735
<h3>x = 5250</h3>
<em><u>Substitute x = 5250 in eqn 1</u></em>
y = 5250 + 1000
<h3>y = 6250</h3>
Thus the group paid $ 5250 at first city and $ 6250 at second city
A.) 5(6x) = 30x B.) 2x+5y+7x= 9x+5y C.) 4(2x+5y)= 8x+20y