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Anvisha [2.4K]
3 years ago
11

What methods can be used to solve quadratic equations?

Mathematics
2 answers:
coldgirl [10]3 years ago
8 0
The Quadratic formula
wlad13 [49]3 years ago
7 0
You can use the Quadratic formula
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Complete the factored form of the linear expression 21x + 14y = ( ) ( + )​
VashaNatasha [74]

Answer:

21x+14y

=7(3x+2y) taking common 7

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Pedro and Eva do their homework.
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Answer: 72 minutes

Step-by-step explanation: 84/7=12. 12x6=72.

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Event v occurs 28% of the time on Tuesdays.
vampirchik [111]

Answer:

68%

Step-by-step explanation:

Probability of occurrence of Event v = P(v) = 28% = 0.28

Probability of occurrence of both Events v and Event w together = P(v and w) = 19% = 0.19

We have to find what is the probability  that event w occurs with event v given that event v  occurs on a Tuesday. This is a conditional probability. In other words we have to find what is the probability of event w given that event v occurs of Tuesday. i.e we have to find P(w|v)

The formula to calculate this conditional probability is:

P(w|v) = \frac{P(v \cap w)}{P(v)}

Using the given values, we get:

P(w|v) = \frac{0.19}{0.28}\\\\ P(w|v) = 0.68\\\\ P(w|v) = 68\%

Therefore, the probability that even w will occur with event v given that event v occurs on Tuesday is 68%

7 0
3 years ago
25,714.28571428571 to 2DP
BaLLatris [955]
25,714.29 is the correct answer I believe
6 0
3 years ago
Is the given value a solution to the equation? 4(n) - 3 = -2(n) + 9 n=2
nlexa [21]

Answer:

Yes!

The solution to the equation is n = 2

Step-by-step explanation:

Given the equation

4\left(n\right)-3=-2\left(n\right)+9

remove the parentheses

4n-3=-2n+9

Add 3 to both sides

4n-3+3=-2n+9+3

Simplify

4n=-2n+12

Add 2n to both sides

4n+2n=-2n+12+2n

Simplify

6n=12

Divide both sides by 6

\frac{6n}{6}=\frac{12}{6}

Simplify

n=2

Therefore, the value of n = 2.

Hence,

Yes!

The solution to the equation is n = 2

5 0
3 years ago
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