Sqrt 155 = 12.45
so it lies between 12 and 13
Answer:
48 µg of the complex should be added when a drug company is making a 6 kg batch of vitamins.
Step-by-step explanation:
Given : The concentration of Vitamin B complex in a certain vitamin mixture is 8 ppb.
To find : How many µg of the complex should be added when a drug company is making a 6 kg batch of vitamins?
Solution :
The formula used to find the mass is given by,
ppb denotes parts per billion.
We have given, concentration of vitamin B complex is 8 ppb.
Mass of solution is 6 kg =
(As )
Substitute in the formula,
Therefore, 48 µg of the complex should be added when a drug company is making a 6 kg batch of vitamins.
Answer:
y = 60
Step-by-step explanation:
<h3>Step 1: Make sense of the given</h3>
"The ratio of y to x is 3"
This means that,
"The sum of y and x is 80"
This means,
<h3>Step 2: Make use of the facts</h3>
If , then .
We can plug this into the other equation by substitution:
This simplifies to:
Which we can solve out and get:
.
<h3>Step 3: Plug and Chug</h3>
We solved for x, but we need the value of y.
So, we go back to the equation we first derived: "".
And now we substitute the value of x, into this.
By solving this out, we get:
So, the value of y is 60.
Answer:
4365.5 or 4365 1/2
Step-by-step explanation:
When you divide 8731 by 2 you will get a decimal.
But you will also get a fraction which is 4365 1/2.
Now you will have to answer with the for that best fits your problem.
Answer:
<A = 75degrees
Step-by-step explanation:
From the triangle given;
arcDA + arc AD + arcBD = 360 degrees
131 + 79 + arcBD = 360
210 + arcBD = 360
arcBD = 360 -210
arcBD = 150 degrees
Since the angle at the vertex <A is half that at the arc BD, hence;
<A = 1/2 arcBD
<A = 1/2 * 150
<A = 75degrees
Hence the measure of angle A s 75degrees