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Pie
3 years ago
5

There are 20 students in the community service club. The club needs 4 officers: a president, a vice president, a secretary, and

a treasurer.
Which expression can you use to find the number of ways to choose the officers from all of the members?
Mathematics
2 answers:
tiny-mole [99]3 years ago
6 0

well they could make a test they have to past for those who want to e officers.

steposvetlana [31]3 years ago
5 0

Answer:20! Over (20-4)!

Step-by-step explanation:

i got it correct

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How many feet are there in 10 km? (1 m = 3.3 ft) 328.084 ft 32,808.4 ft 328,084 ft 3,280.84 ft
lbvjy [14]
<span>How many feet are there in 10 km?

</span><span> 32,808.4 ft</span>
4 0
3 years ago
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An 80-m tower is supported by a guy wire attached to the top of the tower. If the wire forms an
nalin [4]

The Sine or Sinθ in a right-angle triangle is the ratio of its perpendicular to its Hypotenuse. The length of the wire is 81.5 meters.

<h3>What is Sine (Sinθ)?</h3>

The Sine or Sinθ in a right-angle triangle is the ratio of its perpendicular to its Hypotenuse. it is given as,

Sin(θ) = Perpendicular/Hypotenuse

where,

θ is the angle,

Perpendicular is the side of the triangle opposite to the angle θ,

The hypotenuse is the longest side of the triangle.

The length of the tower is 80 meters, while the angle of elevation is 79°. Therefore, the length of the wire will be the hypotenuse of the triangle. Therefore, the length of the wire is,

Sin(θ) = Perpendicular/Hypotenuse

Sin(79°) = 80 meter/Length of the wire

Length of the wire = 81.4973 ≈ 81.5 meters

Hence, the length of the wire is 81.5 meters.

Learn more about Sine:

brainly.com/question/21286835

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5 0
2 years ago
What is the slope–intercept form of the equation 4x − 2y = 9?
adelina 88 [10]
Hey there! :D

Slope intercept form: y=mx+b

4x-2y=9

Add 2y to the other side. 

4x=9+2y

Subtract 9 on both sides.

4x-9=2y

Flip the equation over. 

2y=4x-9 <== slope intercept form 

I hope this helps!
~kaikers
5 0
3 years ago
Is 7 a whole number ​
rusak2 [61]
Yes, it isn’t a fraction, decimal, or mixed number.
6 0
3 years ago
Those who have taken the Algebra EOC please answer.
Dennis_Churaev [7]

Step-by-step explanation:

To me yes.

Algebra is mostly memorization. If you know the formulas and know how to apply it, you should do good.

I say use this. Algebra topics are like building on top each other.

Heart of Algebra:

  • Review what the purpose of x in algebra.
  • Then learn things like combining like terms, and solving for x.
  • Since you know the basics of x, you can then review linear equations( imo, a big content of algebra). Stuff like slope, different linear forms, graphs of linear equations, and mostly linear equation word problems
  • Then you can review system of equations. since you know how to manipulate linear equations, etc.

Then move on to other algebra topics dealing with algebra like

  • functions, and different types of them
  • exponents, and radicals rules
  • inequalities.
  • sequences.
  • These aren't the heart of algebra but study them they are useful and it important to know them.

Since you learned different function rules, we can move on to learning exponetial functions, graphs, and word problems.

Then finally, learn most hard thing in Algebra: Quadratics.

Pratice,practice, and practice and you will pass.

Try to memorize the formulas and know when to apply it.

Good Luck

7 0
3 years ago
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