The phrase "the quotient of 7 and d decreased by 9" written in be algebraic expression is 7/d - 9
<h3>Algebra</h3>
the quotient of 7 and d decreased by 9
7/d - 9
For instance, if d = 0.5
7/d - 9
= 7/0.5 - 9
= 14 - 9
= 5
Therefore, the phrase "the quotient of 7 and d decreased by 9" written in be algebraic expression is 7/d - 9
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Answer:
the answer is 31
Step-by-step explanation:
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Answer:
D. cosine
Step-by-step explanation:
As it can be seen in the figure, the triangle ABC is a right-angled triangle with Angle C = 90 degree.
In a right angle triangle, there is a formula as following:
<em>cosine (of an acute angle) = length of adjacent side/ length of hypotenuse</em>
In the figure, the point of angle B and length of hypotenuse AB are given.
We have to calculate x - length of the given side. As BC is the adjacent side of angle B
=> we can use the above formula to calculate x
So that we can use cosine
The color red can only appear 0,1 or 2 times. We also have that there are in total 9 outcomes. Hence, each event has the same probability, 1/9. Since the definition of probability is the number of favorable outcomes over the total number of outcomes, we get that since in 1 outcome we have both spins turning red, the probability of 2 times appearing red is 1/9. We also have 4 spins where there is only one red; rb, rg, gr, br. Hence, the probability is 4/9. Now, we have 4 outcomes where there is no red. Hence, the probability for 0 reds is also 4/9.
Succinctly P(0 reds)=4/9, P(1 red)=4/9, P(2 reds)= 1/9