Answer:
D
Step-by-step explanation:
Answer:
Step-by-step explanation:
7x-=6x-9
7x=6x-9
7x+9=6x-9+9
7x+9=6x
7x+6x=9
13x=9
X=0.69
Answer:
B) 9 cm
Step-by-step explanation:
Just look at the triangle and use Pythagoras theoreum.
a² + b² = c²
a = 9 9 - 4.9 = 5
b = ?
c = 10
5² + b² = 10²
b² = 100 - 25
b² = 75
b = + - SQRT( 75 )
{Only the positive term has a meaning here.}
b = 8.66 rounded that is 9, which is answer B.
When solving an equation, you must do the same thing to both sides or else it won't be equal
when dealing with one unknown (x) try to get the unknown on one side
2(x-3)=1.2-x
distribute or multiply 2 by x then -3
so (2 times x)+(2 times -3[remember negative times positive=negative])
2x-6=1.2-x
add 6 to both sides
2x=7.2-x
add x to both sides
3x=7.2
divide both sides by 3
x=2.4
Answer:
The answer would be 3 1/9
Step-by-step explanation:
5-2= 3 5/9-4/9 = 1/9