Answer:
10x-20
Step-by-step explanation:
(5×2x)-(5×4)
10x-20
Answer:
6.3/2.5=2.52
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
We want to find the number 4-digit of positive integers n such that removing the thousands digit divides the number by 9.
__
Let the thousands digit be 'd'. Then we want to find the integer solutions to ...
n -1000d = n/9
n -n/9 = 1000d . . . . . . add 1000d -n/9
8n = 9000d . . . . . . . . multiply by 9
n = 1125d . . . . . . . . . divide by 8
The values of d that will give a suitable 4-digit value of n are 1 through 7.
When d=8, n is 9000. Removing the 9 gives 0, not 1000.
When d=9, n is 10125, not a 4-digit number.
There are 7 4-digit numbers such that removing the thousands digit gives 1/9 of the number.
Answer:
x= -3
Step-by-step explanation:
7+
= 5
21+2x=15
2x=-6
x= -3
I dont have the * exact answer * but i got 11 or 12. Hope this helps :))
