Quatro máquinas fazem um serviço em 6 dias, então 3dessas máquinas farão o memo serviço em?

a) 7 dias
b) 8 dias
c)9 dias
d)4,5 dias
e)4 dias

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Which ratios are equivalent to 10: 16? check all that apply. 30 to 48 25: 35 8: 32 5 to 15

The triangles are similar. what is the value of x? enter your answer in the box.