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3 years ago

Write an inequality to end up with x < 15

Mathematics

1 answer:

BlackZzzverrR [31]3 years ago

5 0

Answer:

14<15

Step-by-step explanation:

Any number less than 15 can work.

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In a sociology class there are 1414 sociology majors and 1111 non-sociology majors. 33 students are randomly selected to present

saul85 [17]

Answer: $0.4065$

Step-by-step explanation:

Given : In a sociology class there are 14 sociology majors and 11 non-sociology majors.

Total students = 14+11=25

Number of students are randomly selected = 3

Then, the number of ways to select 3 students from 25 students :-

$^{25}C_3=\dfrac{25!}{(25-3)!3!}=\dfrac{25\times24\times23\times22!}{22!3!}\\\\=2300$

Number of ways to select at least 2 of the 3 students re non-sociology majors :-

$^{14}C_1\times^{11}C_2+^{14}C_0\times ^{11}C_{3}\\\\=(14)\times\dfrac{11!}{2!(11-2)!}+(1)\times\dfrac{11!}{3!(11-3)!}\\\\=(14)(11\times5)+\dfrac{11\times10\times9}{6}\\\\=770+165=935$

The probability that at least 2 of the 3 students selected are non-sociology majors will be :-

$\dfrac{935}{2300}=0.40652173913\approx0.4065$

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3 years ago

A pizza parlor offers a choice of 12 different toppings. How many 4-topping pizzas are possible? (no double orders of toppings a

Serhud [2]

To my belief it’s. Yes

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3 years ago

What are the zeros of the function below?

hoa [83]

Answer:

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I will mark Brainiest (no links please)

Vera_Pavlovna [14]

Answer:

Step-by-step explanation:

Are the volumes equal? No, so throw out the first and the last one.

Is the volume of the pyramid greater than the volume of prism?

No, so throw out the third one

so by inspection it must be the remaining one

or mathematically

vol pyramid = (1/3)(base)(height)

vol prism = (base)(height)

vol pyramid / vol prism

(1/3)(base)(height) / (base)(height) = 1/3

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What number should be added to the expression x^2+4x to change it into a perfect square trinomial?

sleet_krkn [62]

4

$x^2+4x+4=(x+2)^2$

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3 years ago

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