Always decreasing is the answer
Answer:
2 and 2/3 for the first question
-1/8 for the second one
-1/5 for the third one
ive never done this type of question or maybe it was too long ago for me to remember but out of this answer choices i would guess that its the last one
this is 3
Step-by-step explanation:
you add the numerators which is the top number in order to get 2 and 2/3rds
you subtract 5 from 4 to get -1/8
same situation as the last one, subtract 15 from 11 to make it a negative 4/20 and then simplify that by dividing it by four to get 1/5th
this one i dont understand or remember how to do very well but if i had to guess its the last answer choice
this one you add 3/4 plus 1/4 in order to get 4/4 or rather 1, so basically its asking what 1+1+1 is which is 3
Answer:
d
Step-by-step explanation:
Substitute x = -1 into the equations. If the solution is y = 4 for both, then (-1, 4) is the solution.
(a) y = 1 + 3 = 4
y = -1 + 1 = 0
(b) -1 - y = 2 ⇒ y = -3
-1 + y = -6 ⇒ y = -5
(c) -1 + y = -2 ⇒ y = -1
7(-1) - 4y = 8 ⇒ y = -15/4
(d) y = 1 + 3 = 4
y = 2(-1) = 6 = 4
Answer:
The 3 will complete a lap around the neighborhood in 60 seconds ( 1 minute)
Step-by-step explanation:
The time each of the three can take is 15 , 20, 30 seconds
Now, we want to calculate the time at which all 3 will complete a lap around the neighborhood at the same time
To calculate this, we simply look for the lowest common multiple of the three numbers
The lowest common multiple of 15, 20 and 30 seconds is 60 seconds ( 1 minute)
km + 5x = 6y
Subtract 5x from each side:
km = 6y - 5x
Divide both sides by k:
m = 6y - 5x / k