187, 500 ml are needed to prepare 750 mg from 1:250.
We have to find amount in ml to prepare 750 mg from 1:250.
let the amount needed in ml be x.
Using proportion
1/750 = 250 / x
x= 750 . 250
x= 187, 500 ml
Thus, to prepare 750 mg 187,500 ml is needed.
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the sonar system then detects a sunken ship 1500 meters ahead, with an angle of elevation of 19° to the highest part of the sunken ship. how many meters must the submarine rise to pass over the sunken ship?
Step-by-step explanation:
Tan Φ = opposite leg / adjacent leg
tan 19 = height / 1500
1500 * tan 19 = height = 516 m <==== must rise this much
draw a rectangular array with 3 rows and ___ columns
The rectangular shaped array with 3 rows and 4 columns is drawn
X X X X
X X X X
X X X X
Given data ,
Let the number of rows for the rectangle be r = 3
Let the number of columns for the rectangle be c = 4
So , when r = 3 and c = 4
X X X X
X X X X
X X X X
Hence , the rectangle shaped array is solved
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20 Per Question, Algebra 2, Thanks :)
The product of the expression is given as 1/4x²y²
What is an algebraic expression?Remember that an algebraic expression in mathematics is an expression which is made up of variables and constants, along with algebraic operations (addition, subtraction, etc.). It can be a combination of both variables and constants. Any value that is placed before and multiplied by a variable is a coefficient
The given expression is (3x⁵y²)/(xy) * (6xy²) / (9x³y)
Multiply through to have
{(3x⁵y²)(6xy²)} / {(xy)(xy)}
⇒( 18x⁶y⁴) / (72x⁴y²)
Simplify to get
Therefore the value of the expression is 1/4x²y²
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