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3 years ago

In how many ways can a teacher arrange 6 students in the front row if there are 30 total students?

Mathematics

1 answer:

katrin2010 [14]3 years ago

8 0

Same as before, Permutation $\bf _nP_r=\cfrac{n!}{(n-r)!}\qquad \qquad _{30}P_6=\cfrac{30!}{(30-6)!}$

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Rita received a $90 gift card for a coffee store. She used it in buying some coffee that cost $8.07 per pound. After buying the

laila [671]

Subtract 41.58 by 9 then devide that number by 8.07 to get the amount of pounds purchased your answer is 6

7 0

3 years ago

Which pair of points is in the solution set for the system of linear inequalities below?

kirill [66]

2(x + y) or 2y+x or 2x(x + y)

8 0

2 years ago

May someone solve and give explanation

torisob [31]

Answer:

x = 15.7945

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

Step 1: Define

Identify variables

Angle θ = 33°

Opposite Leg = x

Hypotenuse = 29

Step 2: Find Angle

Substitute in variables [sine]: sin33° = x/29
[Multiplication Property of Equality] Multiply 29 on both sides: 29sin33° = x
Rewrite: x = 29sin33°
Evaluate: x = 15.7945

7 0

2 years ago

If T(n) = 7- n , what is the 2nd term?

Gelneren [198K]

$T(2)=7-2=5$

7 0

2 years ago

malia is at an amusement park she bought 14 tickets and each ride requires 2 tickets write an expression that gives a number of

seraphim [82]

Ok, so she has 14 tickets and each ride cost 2 so that can be modeled with the following expression: x= 14-2y since she initially bought 14 tickets and 2 times the number of tickets she spends. To find the equivalent expression you could basically switch up the formula like so: 7*2-2y=x because you just need an equivalent expression, and you don't need to have such a different formula or anything like that. Hope I helped!

7 0

3 years ago