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lbvjy [14]
2 years ago
15

there are 15 students in a homeroom how many different ways can they be chosen to be elected president vice president or treasur

er
Mathematics
1 answer:
Serjik [45]2 years ago
4 0

Answer: 455 different ways

(15 x 14 x 13) / (3 x 2 x 1) = 455
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Joshua is going kayaking with a group during one of his vacation days. In his vacation planning, he budgeted $50 for a kayak ren
pochemuha

Answer: Divide Kayak budget by rental rate

Step-by-step Explanation:

As Joshua is renting for himself alone, the two available options would be the Single Kayak and the Single Sea Kayak.

He can determine the number of hours to rent a Kayak for by dividing his Kayak Budget by the rental rate per hour of the 2 options available to him.

<h2>Single Kayak</h2>

Budget available = $50

Rental rate = $15 per hour

Hours he can rent = 50/15

= 3.33 hours

<h2>Single Sea Kayak</h2>

Budget available = $50

Rental rate = $18 per hour

Hours he can rent = 50/18

= 2.78 hours

5 0
3 years ago
Solve the System using elimination. <br><br> 5x-2y=15<br> 7x+7y=-28
steposvetlana [31]

Answer:

x=1 y=-5

Step-by-step explanation:

7(5x-2y=15) --->      35x-14y=105

2(7x+7y=-28) -->  + <u>14x+14y=-56</u>

                               49x=49  --->x=1

5(1)-2y=15 ---> 5-2y=15 ---> -2y=10 ---> y=-5

8 0
3 years ago
Need help badly plssssss
Ksenya-84 [330]

Answer:

translation then reflection

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Please Help!!!
myrzilka [38]

Answer:

A. principal interviewed the 25 students who scored highest on a reading test.

D. For a report on the exercise habits of adults, Sergio talked to 30 adults at a local fitness center.

E. Josh asked the first 25 people he met at the dog park if they preferred dogs or cats.

Step-by-step explanation:

Biased means if the selection of every unit does not have an equal chance of being selected in a sample.

The sample is said to be good if choosing the unit is unbiased. The sample is said to be unbiased if the selection of each unit is independent.

Option A is an example of data selected in a biased way because principal chose only those student who scored the highest marks on reading test.

Options B and C are unbiased as here a selection of each number and name of the student has an equal chance of being selected.

Option D is biased because Sergio talked adults at a local fitness center where people go for maintaining their health. So, there is a chance of the selection of fitted adults more than unfitted adults.

Option E is biased because Josh met people at the dog park where dog lovers are more than a cat lover.

7 0
3 years ago
Read 2 more answers
(2x+3y+4z)(4x^2+9y^2+16z^2-6xy-12yz-8zx)
erma4kov [3.2K]
1.1 Factoring: 4x2+9y2+16z2-6xy-12yz-8xz

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1: -6xy-12yz
Group 2: 16z2-8xz
Group 3: 4x2+9y2

Pull out from each group separately :

Group 1: (x+2z) • (-6y)
Group 2: (x-2z) • (-8z)
Group 3: (4x2+9y2) • (1)


Looking for common sub-expressions :

Group 1: (x+2z) • (-6y)
Group 3: (4x2+9y2) • (1)
Group 2: (x-2z) • (-8z)
6 0
2 years ago
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