Answer:
949
Step-by-step explanation:
If the 3 digit number is rounded to 900, then this number is between 900 and 950.
The digit in the ones place is the fifth odd number begginning with 1, so this number is number 9.
Lastly, the sum of digits is 22.
Putting our number as 9x9, where x is the tens digit, we know that 9 + x + 9 = 22, so we have that x = 4
So, our number is 949
3x-21=57
3x=21+57
3x=78
Divide by 3
X=26
Answer:
k =1
Step-by-step explanation:
Solve for k:
0.5 k + 2.5 = 2 (k + 0.5)
Expand out terms of the right hand side:
0.5 k + 2.5 = 2 k + 1
Subtract 2 k from both sides:
(0.5 k - 2 k) + 2.5 = (2 k - 2 k) + 1
0.5 k - 2 k = -1.5 k:
-1.5 k + 2.5 = (2 k - 2 k) + 1
2 k - 2 k = 0:
2.5 - 1.5 k = 1
Subtract 2.5` from both sides:
(2.5 - 2.5) - 1.5 k = 1 - 2.5
2.5 - 2.5 = 0:
-1.5 k = 1 - 2.5
1 - 2.5 = -1.5:
-1.5 k = -1.5
Divide both sides of -1.5 k = -1.5 by -1.5:
(-1.5 k)/(-1.5) = (-1.5)/(-1.5)
(-1.5)/(-1.5) = 1:
k = (-1.5)/(-1.5)
(-1.5)/(-1.5) = 1:
Answer: k = 1
I hope this helps, If there are 5 cups of flour, then there will be 7 and 1/2 cups of sugar:)
