1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zolol [24]
3 years ago
7

A salad bar offers nine choices of toppings for lettuce and how many ways can you choose five toppings

Mathematics
2 answers:
MaRussiya [10]3 years ago
8 0

\displaystyle \binom{9}{5}=\dfrac{9!}{5!4!}=\dfrac{6\cdot7\cdot8\cdot9}{2\cdot3\cdot4}=126

Lera25 [3.4K]3 years ago
7 0

Since, a salad bar offers nine choices of toppings for lettuce.

We have to determine the number of ways in which we can choose five toppings from nine toppings.

We will use the combination formula, which states that

"
It is a formula for the number of possible combinations of r objects from a set of n objects", which is given by the formula as:

^nC_{r}=\frac{n!}{r!(n-r)!}

So, ^9C_{5}=\frac{9!}{5!(9-5)!}

^9C_{5}=\frac{9!}{5!4!}

^9C_{5}=\frac{9 \times 8 \times 7 \times 6 \times 5!}{5!4!}

^9C_{5}=\frac{9 \times 8 \times 7 \times 6}{4 \times 3 \times 2}

= 18 \times 7

= 126

Therefore, in 126 ways, we can choose five toppings from nine toppings for lettuce.

You might be interested in
Determine all real values of p such that the set of all linear combination of u = (3, p) and v = (1, 2) is all of R2. Justify yo
Rama09 [41]

Answer:

p ∈ IR - {6}

Step-by-step explanation:

The set of all linear combination of two vectors ''u'' and ''v'' that belong to R2

is all R2 ⇔

u\neq 0_{R2}      

v\neq 0_{R2}

And also u and v must be linearly independent.

In order to achieve the final condition, we can make a matrix that belongs to R^{2x2} using the vectors ''u'' and ''v'' to form its columns, and next calculate the determinant. Finally, we will need that this determinant must be different to zero.

Let's make the matrix :

A=\left[\begin{array}{cc}3&1&p&2\end{array}\right]

We used the first vector ''u'' as the first column of the matrix A

We used the  second vector ''v'' as the second column of the matrix A

The determinant of the matrix ''A'' is

Det(A)=6-p

We need this determinant to be different to zero

6-p\neq 0

p\neq 6

The only restriction in order to the set of all linear combination of ''u'' and ''v'' to be R2 is that p\neq 6

We can write : p ∈ IR - {6}

Notice that is p=6 ⇒

u=(3,6)

v=(1,2)

If we write 3v=3(1,2)=(3,6)=u , the vectors ''u'' and ''v'' wouldn't be linearly independent and therefore the set of all linear combination of ''u'' and ''b'' wouldn't be R2.

7 0
4 years ago
tiana's car travel 111 miles on 3/8 of a tank of gas. how far will she be able to go on a full tank of gas?
kari74 [83]
Turn the 3/8 itto a mixed number and dived it by 111 
3 0
4 years ago
Read 2 more answers
Use the graph below to fill in the blank with the correct number: f(1) = _______
lions [1.4K]
F (1) = -2
hope this helps :)
5 0
3 years ago
Find the sum 6 1/4 + 7 2/3
ki77a [65]

Answer:

13 11/12.

Step-by-step explanation:

First, we multiply 1/4 and 2/3 with it's least common denominator, 12. Now, we have 6 3/12 and 7 8/12. We now add this together to get the sum of 13 11/12.

7 0
3 years ago
Read 2 more answers
How many integers less than 50 have exactly 2 distinct prime factors?
Vedmedyk [2.9K]

1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47

So 16 integers.

6 0
3 years ago
Other questions:
  • a 3 pound pork loin can be cut into 10 pork chops of equal weight. how many ounces are in each pork chop? please show your work
    11·2 answers
  • Which statement best describes putting a “hold” on a check?
    5·1 answer
  • 5. Michelle and her 2 pets moved into a new apartment. The management charges a non-
    8·1 answer
  • Name the image of F
    5·1 answer
  • Its not a quiz/test its homework thats due in a bit :)
    14·2 answers
  • A scale drawing of a square object has a scale of 1 in. : 8 mm. The scale drawing has a length of 6 inches. Find the perimeter a
    7·1 answer
  • Hi how are you? :)<br><br> free points &lt;3
    12·2 answers
  • Three of seven students ate apples for lunch. What is the ratio of students who ate apples to students who did not eat apples fo
    7·1 answer
  • Saul makes trail mix with peanuts, raisins, and pretzels. The ratio of cups of raisins to cup of peanut is 1 to 6. The ratio of
    14·1 answer
  • Logx+log6=69<br> Round to nearest tenth
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!