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3 years ago

15

Need help asapppp Thanks + BRAINLIST only if you know correct answers for these questions

2 answers:

vfiekz [6]3 years ago

5 0

Answer:

1) a

2) b

3) a

Step-by-step explanation:

tankabanditka [31]3 years ago

4 0

Answer:

1) a. x = 38

2) b. x - 77 = 23

3) a. x = 100

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A group of three undergraduate and five graduate students are available to fill certain student government posts. If four studen

creativ13 [48]

Answer:

$Pr = 0.4286$

Step-by-step explanation:

Given

Let

$U \to\\$ Undergraduates

$G \to$ Graduates

So, we have:

$U = 3; G =5$ -- Total students

$r = 4$ --- students to select

Required

$P(U =2)$

From the question, we understand that 2 undergraduates are to be selected; This means that 2 graduates are to be selected.

First, we calculate the total possible selection (using combination)

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

So, we have:

$Total = ^{U + G}C_r$

$Total = ^{3 + 5}C_4$

$Total = ^8C_4$

$Total = \frac{8!}{(8-4)!4!}$

$Total = \frac{8!}{4!4!}$

Using a calculator, we have:

$Total = 70$

The number of ways of selecting 2 from 3 undergraduates is:

$U = ^3C_2$

$U = \frac{3!}{(3-2)!2!}$

$U = \frac{3!}{1!2!}$

$U = 3$

The number of ways of selecting 2 from 5 graduates is:

$G = ^5C_2$

$G = \frac{5!}{(5-2)!2!}$

$G = \frac{5!}{3!2!}$

$G =10$

So, the probability is:

$Pr = \frac{G * U}{Total}$

$Pr = \frac{10*3}{70}$

$Pr = \frac{30}{70}$

$Pr = 0.4286$

5 0

3 years ago

Each bag juwad picked holds 15 apples. How many apples did he pick in two weeks? write an expression to represent this problem.

MAVERICK [17]

The questions does not make sense

6 0

3 years ago

Read 2 more answers

Is the square root of 33 irrational?

maks197457 [2]

I’m gonna say no since it’s 5.74 and it isn’t repeating

6 0

3 years ago

Write an expression for "7 less than y."

lisov135 [29]

Answer:

(y - 7)

Step-by-step explanation:

"7 less than y" means just that.... that you have 7 fewer units then the value of y.

3 0

3 years ago

Multiply each pair of numbers -4.25x(-1.25)=

hoa [83]

The answer is 5.31245

7 0

3 years ago