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IrinaK [193]
3 years ago
15

What is x? -6(9x+5) -3x+4x= -408+x

Mathematics
1 answer:
fredd [130]3 years ago
7 0
X=-53x+378, if you need explanation used ask me.
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How do you find the value of 10 with a 4 in the upper corner
Illusion [34]
\bf 10^4\implies 10\times 10\times 10\times 10\implies 10000
8 0
3 years ago
It’s a new semester!students are grouped into three clubs, which each has 10,4 and 5 students.In how many ways can teacher sleep
My name is Ann [436]

The total number of ways to select 2 students from the 3 clubs is 55 ways.

Since there are three clubs which each has 10, 4 and 5 students, and we require the number of ways a teacher can select 2 students so that they are from different clubs.

Since order doesn't matter and anybody can be chosen first, we use combination theory.

<h3 /><h3>Number of ways of selecting from the first two clubs</h3>

Since we have two slots, to select the first person from the first club, we ¹⁰C₁. For the second student from the club of 4, we have ⁴C₁. Also, there are 2 ways of selecting the two students.

So, there are ¹⁰C₁ × ⁴C₁/2!

= 10 × 4/2

= 20 ways from the first two clubs.

<h3 /><h3>Number of ways of selecting from the next two clubs</h3>

For the next two clubs of 4 and 5 students, for the first slot, we have ⁴C₁. For the second student, we have ⁵C₁. Also, there are 2 ways of selecting the two students.

So, there are ⁴C₁ × ⁵C₁/2!

= 4 × 5/2

= 10 ways from the next two clubs.

<h3 /><h3>Number of ways of selecting from the last two clubs</h3>

For the first and last club of 10 and 5 students, for the first slot, we have ¹⁰C₁. For the second student, we have ⁵C₁.  Also, there are 2 ways of selecting the two students.

So, there are ¹⁰P₁ × ⁵P₁/2!

= 10 × 5/2

= 25 ways from the first and last club.

<h3 /><h3>Total number of ways of selecting two students from the 3 clubs.</h3>

So, the total number of ways to select 2 students from the 3 clubs is 20 + 10 + 25 = 55 ways.

So, the total number of ways to select 2 students from the 3 clubs is 55 ways.

Learn more about combinations here:

brainly.com/question/25990169

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3 years ago
Factor x^3y^6 + 27z^42
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(xy^2 + 3z^14)(x^2y^4 - 3xy^2z^14 + 9z^28)
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Solve the equation 8x = - 16.
FrozenT [24]

Answer:

x=-2

No, to solve an equation you must use inverse operation which is division

Step-by-step explanation:

16/8=2

-16/8=2

6 0
2 years ago
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Which phrase correctly describes the solution to the quadratic equation?
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Answer:

"Two complex solutions" is the answer.

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