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enot [183]
3 years ago
6

Please help ....posting more questions..​

Mathematics
2 answers:
Fiesta28 [93]3 years ago
3 0

Answer:

Step-by-step explanation:

(a): {red, orange, yellow, green, blue, indigo, violet}

(b): {S, Y, M, T ,R}

(c): ???

(d): {January, June, July}

(e): {11, 13, 15, 17}

(f): {b, c, d, f, g}

(g): {Tuesday, Thursday}

(h): {2, 4, 6, 8, 10, 12}

(i): {Feburary}

11. (c) {x: x is a cubic number}

(e): {x: x is the first five letters of the alphabet.}

AveGali [126]3 years ago
3 0

Answer:

Step-by-step explanation:

a) J = {Violet, Indigo, Blue, Green,Yellow, Orange, Red}

b) K = { S, Y , M , R ,T}

d) M={January, June, July}

e) N = {11,13,15,17}

f)O= {b,c,d,f,g}

g} p = {Tuesday, Thursday}

h)Q = {2,4,6,8,10,12}

i)R = {February}

11)a ) M = {x:x is the set of whole numbers}

b) N={x:x is the set first five whole even numbers}

c) O ={x:x is the set of cube of natural numbers}

d) P ={x: x is the set of integers that are multiples of five}

Q = {x: xis the set of first five alphabets}

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An amusement park has 11 roller coasters. In how many ways can you choose 4 of the roller coasters to ride during your visit to
Vadim26 [7]
4!=4*3*2*1=24
11!=11*10*9*8*7*6*5*4*3*2*1=39916800
7!=7*6*5*4*3*2*1=5040
n choose k
how many ways are there to choose k rollercoasters from n choices?

\left(\begin{array}{ccc}n\\k\end{array}\right)=\frac{n!}{k!(n-k)!}

\left(\begin{array}{ccc}11\\4\end{array}\right)=\frac{11!}{4!(11-4)!}=\frac{39916800}{24(7)!}=\frac{39916800}{24(5040)}=\frac{39916800}{120960}=330



330 ways






6 0
4 years ago
£150 is invested at 5% compound interest for 2 years. How much will be in the account at the end of the investment?
morpeh [17]

Answer:

165

Step-by-step explanation:

5% of 150 british pounds = 7.5 British pounds

2 years = 7.5 BS per year

7.5 + 7.5

= 15 british pounds

15 british pounds + 150 british pounds =

165 british pounds

7 0
2 years ago
Find the possible value or values of r in the quadratic equation r2 – 7r – 8 = 0. 
dsp73
R^2-7r-8=0 

<span>=> ( r - 8) ( r + 1 ) = 0 </span>

<span>=> r - 8 = 0 or r + 1 = 0 </span>

<span>=> r = 8 , r = -1
the answer is A</span>
5 0
3 years ago
Read 2 more answers
At the movies, a couple bought 2 medium drinks and a large popcorn for $13.85. At the same theater, a family bought 3 medium dri
m_a_m_a [10]

Answer:

a) the cost of one medium drink be $3.80

b) the cost of a large popcorn be $6.25

Step-by-step explanation:

Let the cost of one medium drink be $x

and the cost of a large popcorn be $y

According to question,

A couple bought 2 medium drinks and a large popcorn for $13.85.

2x + y = 13.85      ..............(1)

A family bought 3 medium drinks and 2 large popcorn for a total of $23.90

3x + 2y = 23.90      ..............(2)

Using Elimination method to solve the system of equation,

Multiply equation (1) by 2 , we get,

4x + 2y = 27.70      ..............(3)

Now, subtract equation (2) from (3), we get,

4x + 2y-(3x + 2y) = 27.70 - 23.90

4x + 2y-3x - 2y = 3.80

4x -3x = 3.80

x = 3.80

Substitute, x = 3.8 in (1) ,

2(3.80) + y = 13.85  

7.60 +y = 13.85

y = 6.25

Therefore, the cost of one medium drink be $3.80

and the cost of a large popcorn be $6.25



7 0
3 years ago
Read 2 more answers
What property is 8+9z+4
aniked [119]

Answer:

binomial

Step-by-step explanation:

4 0
3 years ago
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