Answer:
4000
Step-by-step explanation:
If the chemist can make 500 mg/s per hour then you miltiply it my the number of hours.
500 x 8 = 4000
Answer:
One-fifth or 20%
Step-by-step explanation:
2/10 = 1/5
1/5 × 100 = 20%
Answer:
Area of circle is 7.7cm²
To the nearest tenth
Step-by-step explanation:
This problem has some missing details as regarding the unit of the side of the square "n"
Assuming that the side n is in cm
n=3.14cm
Since the circle fits perfectly into the square, it means the diameter of the circle is same as the side of the square
Hence diameter d=n= 3.14cm
Therefore radius r=d/2= 3.14/2
r=1.57cm
π= 3.142
We know that the area of a circle is
A=πr²
Substituting our radius we have
A= 3.142*1.57²
A=3.142*2.4649
A=7.744cm²
Rounding to the nearest tenth
Area of circle is 7.7cm²
Answer:
x = 78°
Step-by-step explanation:
You are finding the last angle, x, in a triangle.
A triangle always equals 180.
P - 12
Q - 90
90+12 = 102
180-102 = 78
Since the discriminant given has a value that is greater than zero, hence the roots of the quadratic equation are real and distinct.
<h3>Discriminant of a quadratic equation</h3>
Quadratic equation is an equation that has a leading degree of 2. The discriminant is used to determine the nature of the equation
If D > 0 , the roots of the quadratic equation are real and distinct.
If D < 0 , the roots of the quadratic equation are complex
Since the discriminant given has a value that is greater than zero, hence the roots of the quadratic equation are real and distinct.
Learn more on discriminant here: brainly.com/question/2507588
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