If they have the same charge
x+x+x+x+x+x+x=-42
7x=-42
x=-6
so to check our answer
-6-6-6-6-6-6-6=-42
-12-12-12-6=-42
-24-18=-42
-42=-42
Answer:
5,252
Step-by-step explanation:
Let the number of boys present be b and the number of girls present be g
Now we are told these numbers are equal. This means b = g
Furthermore, if 1313 girls leave, the number of boys remaining would be twice the number of girls.
Mathematically, this can be expressed as follows:
b/(g-1313) = 2
b = 2(g-1313)
b = 2g - 2626
b + 2626 = 2g
We know that b = g from the initial equation, substituting this here yields:
g + 2626 = 2g
g = 2626
Since b = g, b = 2626 also
Total number of students = 2626 + 2626 = 5,252
Answer:
x=1
y=-4
Step-by-step explanation:
4x+y=0 -> y= -4x
2(-4x)+x=-7
-8x+ x=-7
-7x=-7
x=-7/-7=1
y=-4 . 1 = -4
Use an Addition or Subtraction Formula to find the exact value of the expression sin(285°)
Answer:
[(8-3)×5]-1=24
Step-by-step explanation:
[(8-3)×5]-1=24
[(5)×5]-1=24
[5×5]-1=24
[25]-1=24
25-1=24
24=24
