Answer:
step 1 was wrong she should have added 25 to both sides
Step-by-step explanation:
step 3 was correct she divided both sides by -5
Answer:
3 segundos
Step-by-step explanation:
De la pregunta anterior, se nos dice que:
En un evento de natación, Mario hizo el curso en ¾ de minuto
1 minuto = 60 segundos
Por lo tanto = 3/4 de minuto
= 3/4 × 60 segundos
= 45 segundos
David completó el curso en 4/5 de un minuto.
1 minuto = 60 segundos
Por lo tanto = 4/5 de un minuto
= 4/5 × 60 segundos
= 48 segundos
La diferencia entre los dos competidores se calcula como
48 segundos - 45 segundos
= 3 segundos.
Por lo tanto, la diferencia entre los dos competidores = 3 segundos.
Answer:
The answer is C.
Step-by-step explanation:
When we see something with a high correlation coefficient, we know that these two things trend in the same direction (which eliminates D). However, we must remember that correlation does not mean causation, so A and B are also out.
Answer:
read below
Step-by-step explanation:
Alright, archtan /
tan
−
1
(
x
)
is the inverse of tangent. Tan is
sin
cos
. Like the inverse of sin, the inverse of tan is also restricted to quadrants 1 and 4.
Knowing this we are solving for the inverse of tan -1. We are basically being asked the question what angle/radian does tan(-1) equal. Using the unit circle we can see that tan(1)= pi/4.
Since the "Odds and Evens Identity" states that tan(-x) = -tan(x). Tan(-1)= -pi/4.
Knowing that tan is negative in quadrants 2 and 4. the answer is in either of those two quadrants. BUT!!! since inverse of tan is restricted to quadrants 1 and 4 we are left with the only answer -pi/4.
the answer is m=-3n-5/2 or n=2m+5/6
