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laila [671]
3 years ago
11

A van has room for 6 students and 2 teachers . How many vans are needed for a total of 48 students and 16 teachers ?

Mathematics
2 answers:
LekaFEV [45]3 years ago
5 0
48 ÷ 6 = 8

16 ÷ 2 = 8

So you need 8 vans

I hope that helps!
Karolina [17]3 years ago
3 0
16 because 48÷6=8 and 16÷2=8. 8+8=16. tell me if it helps
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Give the difinition, formula, and example problem of permutation, combination & probability... please asap huhu I'll mark yo
SSSSS [86.1K]

Answer:

Answer:

Permutation:

In mathematics, a permutation of a set is, loosely speaking, an arrangement of its members into a sequence or linear order, or if the set is already ordered, a rearrangement of its elements. The word "permutation" also refers to the act or process of changing the linear order of an ordered set.

Formula:

nPr=\frac{n!}{(n-r)!}

Example:

Permutations are the different ways in which a collection of items can be arranged. For example, the different ways in which the alphabets A, B and C can be grouped, taken all at a time, are ABC, ACB, BCA, CBA, CAB, BAC. Note that ABC and CBA are not the same as the order of arrangement is different.

Combination:

In mathematics, a combination is a selection of items from a collection, such that the order of selection does not matter.

Formula:

nCr=\frac{n!}{r!(n-r)!}

Example:

Combination: Picking a team of 3 people from a group of 10.

C(10,3) = 10!/(7! * 3!) = 10 * 9 * 8 / (3 * 2 * 1) = 120.

Probability:

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates the impossibility of the event and 1 indicates certainty.

Formula:

Conditional Probability P(A | B) = P(A∩B) / P(B)

Bayes Formula P(A | B) = P(B | A) ⋅ P(A) / P(B)

Example:

Probability is the likelihood or chance of an event occurring. For example, the probability of flipping a coin and its being heads is ½, because there is 1 way of getting a head and the total number of possible outcomes is 2 (a head or tail). We write P(heads) = ½.

7 0
3 years ago
Read 2 more answers
Amanda is at a store for apples and bananas. if she buys 6 apples and 5 bananas, it will cost $8.00. is she buys 5 apples and 7
TiliK225 [7]

Answer:

Therefore the cost of each apple is $ 0.50 and each banana is $1.

Step-by-step explanation:

Given , Amanda buys 6 apples and 5 bananas , it will cost $8.00 and if she buys 5 apples and 7 bananas it will cost $9.50.

Let the cost of one apple be =$ x

and the cost of one banana be =$y

According to the problem,

6x+5y=8.........(1)                  5x+7y= 9.50............(2)

Equation (1)×5 - equation (2) × 6

30x +25 y-(30x+42y)= 40-57

⇔30x+25y -30x-42y= -17

⇔-17y =-17

⇔y=1

putting the value of y in equation (1)

6x+5×1=8

⇔6x = 8-5

⇔6x=3

⇔x =\frac{3}{6}

⇔x = 0.50

Therefore the cost of each apple is $ 0.50 and each banana is $1.

4 0
3 years ago
A 7/16- inch- long bolt is used in a machine.what is the length of the bolt written as a decimal?
mezya [45]
0.4375 inch is the answer

7 0
3 years ago
The price of apples went from $1.99 per lb to $3.19 per lb in four years. Find the rate of change of the price of apples.
navik [9.2K]
3.19 - 1.99 = 1.20 increase in 4 years

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rate of change is 0.30 per year  (30 cents per year)
3 0
3 years ago
Read 2 more answers
I need help with math ...x+180+1.5x+3x=455
kirill115 [55]
5.5x+180=455
5.5x=275
The answer is X=50
8 0
3 years ago
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