Answer:
20% by mass means 20 g of the NaOH is dissolved in 100 g of solution. If that is what you mean.
Step-by-step explanation: What is the meaning of 20% mass by volume solution?
20% mass by volume means 20 g of the NaOH is dissolved in 100 mL of the solution.
Depends on the concentration terms meaning and values also changes.
Answer:
4^4
144x^9
3^24 x^20
Step-by-step explanation:
4^7/ 4^3 keep the base number and subtract the exponent
(12x^4) (2x^5) Multiply the numbers then add your exponents
(3^6 x^5)^4 multiply the exponents inside by exponent 4
First, I add all of my prices together.
$9.50(2)+$7.95+$7.95+$49.95= $84.85
Change 6% to a decimal = .06
Then multiply: 84.85 x .06 = $5.09
$5.09 is the sales tax
$84.85 + $5.09 = $89.94
Answer: $89.94
I hope this helps :)
Answer:
4 pull ups and 32 push ups
Step-by-step explanation:
Answer:
0.033 is the probability that a teenage boy has a cholesterol level greater than 225.
Step-by-step explanation:
The following information is missing in the question:
Mean, μ = 170
Standard Deviation, σ = 30
Using the given information, we may solve the question as:
We are given that the distribution of distribution of cholesterol levels in teenage boys is a bell shaped distribution that is a normal distribution.
Formula:
a) P( cholesterol level greater than 225)
P(x > 225)
Calculation the value from standard normal z table, we have,
0.033 is the probability that a teenage boy has a cholesterol level greater than 225.