What is:
2
X + X =
( what is X cubed add X)
Answer:
-12
Step-by-step explanation:
Answer:
The total cost for 1.5 pounds of apples is $5.25
Step-by-step explanation:
To find the total cost using partial products, you can do the following:
Calculate the cost for 1 pound of apples, which is $3.50.
Since Zoe bought 1.5 pounds of apples, you can use partial products to find the total cost:
First, calculate the cost for 1 pound: $3.50.
Next, calculate the cost for 0.5 pounds (half of 1 pound), which is half of $3.50: $3.50 / 2 = $1.75.
Finally, add the cost for 1 pound and 0.5 pounds to find the total price: $3.50 + $1.75 = $5.25.
So, the total cost for 1.5 pounds of apples is $5.25.
Answer:
To calculate the actual yield of iron in moles, we need to use the molar mass of iron (Fe) and the given mass of iron produced.
The molar mass of iron (Fe) is approximately 55.845 g/mol.
Given:
Amount of Fe2O3 = 0.288 mol
Mass of Fe produced = 18.1 g
To find the moles of Fe produced, we can use the molar mass of Fe:
moles of Fe = mass of Fe / molar mass of Fe
moles of Fe = 18.1 g / 55.845 g/mol
moles of Fe ≈ 0.324 mol
Therefore, the actual yield of iron in moles is approximately 0.324 mol.
Answer:
the answer is d
Step-by-step explanation:
i did whhat the other person said and got it right
Answer:
D
Step-by-step explanation:
Answer:
Twenty-one is 25% of 84 .
Step-by-step explanation:
Formula
As given
Part value = 21
Percentage = 25%
Put all the values in the formula
Total value = 84
Therefore Twenty-one is 25% of 84 .
The expression is Twenty-one is 25% of 84
From the question, we have the following parameters that can be used in our computation:
Twenty-one is 25% of
Represent the percentage with x
So, we have
Twenty-one is 25% of x
Mathematically, we have
21 = 25% * x
Rewrite as
25% * x = 21
So, we have
x = 21/25%
Express the percentage as decimal
x = 21/0.25
Evaluate the expression
x = 84
Hence, the number in the percentage is 84
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