Answer: Yes
Step-by-step explanation: The decimal 2.15 is a terminating decimal.
This means the decimal ends.
All terminating decimals are rational.
Answer:
No error
Step-by-step explanation:
Ling tried to solve an equation step by step.
Step 1.
-2q + 11 = -32
Step 2.
Subtract 11 from both sides,
-2q + 11 -11 = -32 -11
-2q = -43
Step 3.
Dividing both sides by 2,
q = 21.5
Hence, the calculation has no error.
Answer:
5 days
Step-by-step explanation:
7.50 ÷ 1.50 = 5
- 7.50 - 1.50 = 6.00
- 6.00 - 1.50 = 4.50
- 4.50 - 1.50 = 3.00
- 3.00 - 1.50 = 1.50
- 1.50 - 1.50 = 0
Answer:
5 ml of 50% syrup solution will be used to create the final solution
Step by step Explanation:
Let the amount of 50% solution that was used = b
Which means ( 30 - b ) is the amount of 1/200 solution used then we can derive an equation as follows,
set up will then be,
0.5b +0.05(30 -b) = 1/8 (30)
We can simplifiy this as
0.5b+ 1.5 -0.05b = 3.75
Then make b the subject of the formula we have
0.45b = 2.25
b= 2.25/0.45
b = 5 ml
Therefore, 5ml of 50% syrup solution will be used to create the final solution
