Let x = number of problems on test
If he got 14 wrong, then x - 14 is the number correct.

x - 14 = .72x
.28x - 14 = 0
.28x = 14
x = 50
The test consisted of 50 problems.
Answer: correct option is A
0.100
Step-by-step explanation:
Given that
population = 500 elements.
To draw a simple random sample of 50 elements from this population. On the first selection
The probability = 50/500 = 0.1
The probability of an element being selected is 0.100
False I believe. I'm pretty sure.
Hello! To solve this problem, all you have to do is add and subtract numbers as needed.
A. An expression for this would be 0.85 + 0.50 + 0.15 - 0.30. This is because there is already juice in the mixture. Celina adds more juice in it and she drinks some of it.
B. Now, let’s solve the expression. 0.85 + 0.50 is 1.35. 1.35 + 0.15 is 1.5. 1.5 - 0.3 = 1.2. The amount of juice left in the jar is 1.2 liters.