II. Factor the quadratic expression. Rewrite the equation with factors instead of the original polynomial.
III. Use the zero product property to solve the quadratic equation.
IV. Rewrite your solutions to Part III by replacing u with sin x.
V. Solve the remaining equations for x, giving all solutions to the equation.
we have that
I. Rewrite the equation by substituting the expression u in for sin x.
II. Factor the quadratic expression. Rewrite the equation with factors instead of the original polynomial.
is equal to
using a graph calculator-----> see the attached figure
III. Use the zero product property to solve the quadratic equation.
(u-3)=0--------------> u=3
(2u+1)=0-------- 2u=-1------> u=-1/2-----> u=-0.5
IV. Rewrite your solutions to Part III by replacing u with sin x.
sin x=3--------> is not the solution (sin x can not be greater than 1)
sin x=-0.50------>is the solution
V. Solve the remaining equations for x, giving all solutions to the equation.
sin x=-0.50
if the sine is negative
then
x belong to the III or IV quadrant
we know that
sin 30°=0.50
so
the solution for the III quadrant is
x=180°+30°-------> x=210°
the solution for the IV quadrant is
x=360°-30°------> x=330°
Answer:
The probability that both of the selected marbles are red is
Step-by-step explanation:
Given
Number of red marbles = 3
Number of blue marbles = 5
Required
Probability of selecting two red marbles (without replacement).
First, we need to get the total number of marbles
Total = Red Marbles + Blue Marbles
Total = 3 + 5
Total = 8
Probability is calculated by: Number of required outcome divided by number of possible outcome.
Since there are 3 red marbles out of a total of 8 marbles;
The probability that the first marble you selected is red is 3/8
From the question, you didn't return the marble back to the container.
This means that, there are 2 red marbles and a total of 7 marbles left in the container.
So, the probability that the next marble selected is red is 2/7
Let P(R and R) represent the probability of selecting two red marbles.
This is calculated by multiplying the probability of picking the first red marble and the second red marble.
Hence,
P(R and R) =
P(R and R) = --- Reduce to lowest term
P(R and R) =
Hence, the probability that both of the selected marbles are red is
48 m2
B.
192 m2
C.
52 m2
D.
512 m2
Answer: B.
Step-by-step explanation:
The lateral area of a rectangular prism is given by :-
, where h is the height, l is the length and w is the width of the rectangular prism.
Now, using the given information, the lateral area of the rectangular prism will be :-