Answer:
-(-5) ± √13 5 ± √13
x = ----------------------- = ---------------
2(3) 6
Step-by-step explanation:
This is a quadratic equation, with coefficients 3, -5 and 1.
The discriminant, b² - 4ac, turns out to be (-5)² - 4(3)(1), or 25 - 12 = 13
Thus, the roots are:
-(-5) ± √13 5 ± √13
x = ----------------------- = ---------------
2(3) 6
Answer:
6
−
4 x
=
6
x
−
8
x
−
2 Since x
is on the right side of the equation, switch the sides so it is on the left side of the equation.
6
x
−
8
x
−
2
=
6−
4
x Subtract 8
x from 6
x
.
−
2
x
−
2
=
6
−
4
x
Move all terms containing x
to the left side of the equation.
Tap for fewer steps...
Add 4
x
to both sides of the equation.
−
2
x
−
2 + 4 x
= 6 Add −
2
x and 4
x
.
2
x
−
2
=
6
Move all terms not containing
x to the right side of the equation.
Tap for fewer steps...
Add 2
to both sides of the equation.
2
x
=
6
+ 2 Add 6 and 2
.
2
x
=
8
Divide each term by
2 and simplify.
Tap for fewer steps...
Divide each term in
2
x
=
8 by 2
. 2
x
2
= 8 2 Cancel the common factor of
2 . Tap for more steps...
x
=
8 2 Divide 8 by 2
.
x
=
4
Step-by-step explanation:
We can simply by opening the brackets ,
=> y - 1 = 5( x - 2 )
=> y - 1 = 5x - 10
=> y - 5x = -9
=> 5x - y + 9 = 0
So convert 3.25 meters to centimeters, and you get 325 centimeters.
Now divide 325 by 5 (for each ribbon), and you get 65 name tags.
Therefore, she needs 35 MORE name tags to get to 100.
Multiply 35 by 5 and you get 175 MORE centimeters of ribbon.
Hope this helped!
Answer:
20-4x
Step-by-step explanation:
x = every school day
