Answer:
Part 1)
-----> 
Part 2)
------> 
Part 3)
-----> 
Part 4)
-----> 
Part 5)
------> 
Step-by-step explanation:
Part 1) we have

To calculate the subtraction convert the mixed numbers to an improper fractions



substitute

Convert to mixed number

Part 2) we have

To calculate the subtraction eliminate the parenthesis first

Part 3) we have

To calculate the subtraction convert the mixed numbers to an improper fractions



substitute

Eliminate the parenthesis

Convert to mixed number

Part 4) we have

To calculate the subtraction eliminate the parenthesis first

Part 5) we have

To calculate the subtraction convert the mixed numbers to an improper fractions



substitute

Eliminate the parenthesis

Answer:
& 
Step-by-step explanation:
1) Subtract
from both sides. This should leave you with
.
2) Square root both sides. This should leave you with
&
.
<em>You can stop here if this is what the problem is asking for. However, it is not fully simplified.</em>
<em />
3) Factor the equation. This should leave you with
&
.
2x^2 - 11 = 87
2x^2 = 87 + 11 = 98
x^2 = 98/2 = 49
x = sqrt (49) = + or - 7
Answer:
5.45%
Step-by-step explanation:
To find info of a 15 year old male, you look at the Age Group of 14 - 18, beside Male.
The RDA of Iron is given as 11 mg
From a 8 oz glass of grape juice, he gets 0.6 mg.
<em>What percent is 0.6 mg of total 11 mg??</em>
Divide 0.6 by 11 and then multiply by 100 to get the answer. So we have:

Thus, 5.45% of RDA of iron is provided by an 8 oz glass of grape juice.