Answer:
(a) 
(b) 
Step-by-step explanation:
It is given that 
(a) We have given equation 



(b) 



Answer:
112
Step-by-step explanation:
The general form of all percentage questions is: the chunk= (some percentage) (of the whole), or c=p*w
We know that 18% of students are 8th grade and that is 126 students, so p = 0.18 and c=126 (126 students are 18% of the whole school)
126 = (0.18)w, divide both sides by 0.18
126/(0.18) = w = 700
9th graders are 16% of the school or 16% of 700 students
c = (0.16) 700 = 112 students
Answer:
Step-by-step explanation:
332 323 233
To answer this you need to figure out what 30% of the total number of carbs need to be whole-grain. Multiply 0.3 times 220 to get 66 grams. He did not meet his goal. Because he only ate 5 g, this is 61 less than he needs to meet his goal.
Answer:

Step-by-step explanation:
Hi there!
We want to solve for
in:

Since
is in the argument of
, let's first isolate
by dividing both sides by 4:

Next, recall that
is just shorthand notation for
. Therefore, take the square root of both sides:

Simplify using
:

Let
.
<h3><u>Case 1 (positive root):</u></h3>

Therefore, we have:

<h3><u>Case 2 (negative root):</u></h3>
