Answer:
n=3
Step-by-step explanation:
n/45=1/45
cross multiplying
15n=45
n=45/15
n=3
Answer:
1). 0.1667
2). 0.3333
3). 0.3333
Step-by-step explanation:
1). Probability that the student was female and got a 'B'
=
=
= 0.1667
2). Probability that the student was male and got an 'A'
=
=
=
= 0.3333
3). Probability that the student got a B =
=
=
= 0.3333
Answer:
y = 10
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
<u>Geometry</u>
- Definition of a Line: A line is 180°
Step-by-step explanation:
<u>Step 1: Set Up Equation</u>
(10y + 6)° + (8y - 6)° = 180°
<u>Step 2: Solve for </u><em><u>y</u></em>
- Combine like terms: 18y = 180
- Divide 18 on both sides: y = 10
Answer: 90° , 60° and 30° .
Step-by-step explanation:
Given : In a right triangle with a leg of 4 units and a hypotenuse of 8 units.
One angle should be 90°. (A right triangle has a 90° angle.)
Let the given leg is the side opposite to the angle in the triangle.
Then by trigonometry , we have
[Sine of an angle is the ration of the side opposite to the angle and the hypotenuse of a right triangle.]
Also ,
Let x be the measure of the third angle.
BY Angle sum property of triangle , we have
Therefore , the measures of all angles in the triangle : 90° , 60° and 30° .