I don’t know sorry use mathaway it’s really good 11
Answer:
0.03333
Step-by-step explanation:
Answer:
Cos A=base/hypotenuse =4/5
Base=4,hypotenuse =5
By Pythagoras theorem,
Height =3
Tana=heigh /base=3/4
He included another variable - time. He should have given both brands the same amount of time to work. The only variable should have been the brands. Parker has introduced another variable and therefore his results are invalid.
6/ sqrt(8)=
6/sqrt(8) * sqrt(8)/sqrt(8)
6sqrt(8)/8
3/4 * sqrt(8)
3/4 * sqrt(4*2)
3/4 * sqrt(4) * sqrt(2)
3/4 *2*sqrt(2)
3/2 *sqrt(2)
5/sqrt(11) *sqrt(11)/sqrt(11)
5sqrt(11)/11
5/11 *sqrt(11)