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2 years ago

Which of these equations represent functions where x is the input and y is the

Mathematics

1 answer:

Arisa [49]2 years ago

4 0

Answer:

y=2x-A

Step-by-step explanation:

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The student body of a large university consists of 60% female students. A random sample of 8 students is selected. Refer to Exhi

jasenka [17]

Answer:

0.0499

Step-by-step explanation:

This is a binomial probability function expressed as:

$P(X=x)={n\choose x}p^x(1-p)^{n-x}\\\\$

Given that n =8, and p(male)=1-0.6=0.4, the probability of at least 6 being male is calculated as:

$P(X=x)={n\choose x}p^x(1-p)^{n-x}\\\\P(X\geq 6)=P(X=6)+P(X=7)+P(X=8)\\\\={8\choose 6}0.4^6(0.6)^{2}+{8\choose 7}0.4^7(0.6)^{1}+{8\choose 8}0.4^8(0.6)^{0}\\\\=0.0413+0.0079+0.0007\\\\=0.0499$

Hence, the probability of at least 6 males is 0.0499

8 0

2 years ago

Which expression represents the fourth term in the binomial expansion of (e + 2f)10?

yan [13]

The fourth term of the binomial expansion $(e+2f)^{10}$ can be calculated using the formula for (i+1)-th term of the binomial expansion:

$T_{i+1}=C_{10}^i\cdot e^{10-i}\cdot (2f)^i.$

In order to find term $T_4$ , determine that

$i+1=4\Rightarrow i=3.$

Now

$T_4=C_{10}^3\cdot e^{10-3}\cdot (2f)^3=C_{10}^3\cdot e^7\cdot (2f)^3.$

Answer: correct choice is A

6 0

2 years ago

Read 2 more answers

Solve for z. z/4 −2 = 2 z =

PilotLPTM [1.2K]

Answer:

z=16

Step-by-step explanation:

z/4-2=2(take l.c.m)

or,(z-8)/4=2

or,z-8=8

z=16

6 0

2 years ago

to join a local square dancing group, jan has to pay a $100 registration fee plus $20 per month. how many months can she dance f

Kazeer [188]

Answer: 15 months

Step-by-step explanation:

Her balance after paying the registration fee is $300. Then we need to divide this remaining money into as many chunks (months )of $20. So we do 300/20 = 15 months

3 0

3 years ago

Please I need help with this question!!

nalin [4]

[15 + 1/2 ] - [ 2 + 3/4 ] - [6 + 2/3 ]......convertng these to improper fractions, we have

[31 /2 ] - [11 / 4 ] - [ 20 / 3 ] getting a common denominator (12), we have

[186 / 12] - [33 / 12 ] - [ 80 / 12 ] = 73 / 12 inches = about 6.0833 inches left

5 0

2 years ago

Read 2 more answers