Answer:
d= -2
Step-by-step explanation:
7 + 4d + 5d = 7d + 3
Combine like terms
7+9d = 7d+3
Subtract 7d from each side
7+9d-7d = 7d-7d+3
2d +7 = 3
Subtract 7 from each side
2d+7-7 = 3-7
2d = -4
Divide each side by 2
2d/2 = -4/2
d = -2
Answer:
y = 2x + 20
Step-by-step explanation:
Vlad spent 20 minutes on history. Then Vlad spent 2 minutes on each math problem for homework, this is 2x. So in total, he spent 20+2x on homework. Depending on how many problems he did, the total time y can be found. This is the equation 20+2x=y.
If Vlad did 0 math problems then he spent at least 20 minutes on homework from history. This is the constraint .
We also know Vlad can do many math problems but the least amount he did was 0, so the second constraint is .
Answer:
i have to say Tanaka is my favorite
Step-by-step explanation:
Answer:
-44
Step-by-step explanation:
first term is -4, second -9, third -14, fourth -19, etc.
there is constant difference (-5) between each two neighbor terms
you can use calculator by pushing the following buttons: -4-5========
the method is:
1) insert first term (-4)
2) insert a difference (-5)
3) push the "=" button 1 time less than the desired term number
So, if you must find 9th term, you push "=" button 8 times
after pushing buttons -4-5======== you get a result -44 on a calc
