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4 years ago

5

In order to conduct a certain experiment, four students are randomly selected from a class of 20. how many different groups of f

our stdents are possible

1 answer:

chubhunter [2.5K]4 years ago

8 0

20x4=80
i am assuming this is correct this is how i learned just take all numbers in equation and multiply by each other

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What are the solutions to the quadratic equation (5y + 6)2 = 24?

lana [24]

To solve for y, apply the distributive property:
$10y + 12 = 24$
Then, subtract 12 from both sides and you will get:
$10y = 12 \\$
Then solve for y, by dividing both sides by 10.

Your final answer will be y=1.2

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3 years ago

Read 2 more answers

How many ways can a dance instructor send 4 of her 11 students to a summer dance program?

Sedaia [141]

Answer:

d) 330

Step-by-step explanation:

The number of ways can a dance instructor send 4 of her 11 students to summer dance program is C(11 , 4)

That is $11_{C_{4} }$ ways

by using formula $n_{C_{r} } = \frac{n!}{(n-r)!r!}$

now simplification

$11_{C_{4} } = \frac{11!}{(11-4)!4!}$

= $\frac{11X10X9X8X7!}{(7!)4X3X2X1}$

after cancelling 7! and on simplification

= $\frac{11X10X9X8}{4X3X2X1}$

after cancellation we get 330 ways

The number of ways can a dance instructor send 4 of her 11 students to summer dance program is 330

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3 years ago

“Number of teeth each child has in second grade class.”<br><br> Low or high variability?

sasho [114]

The answer is high variability

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3 years ago

Is 2/7x proportional on a graph

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3 years ago

12/-4 =<br> pls help i don’t understand

Sveta_85 [38]

$\text {Hello! Let's Solve this equation!}$

$\text {Since there is a negative in the problem this tells us that the answer we get will be a negative.}$

$\text {Here are some tips on dividing/multiplying equations like this.}$

$\text {Multiplying/Dividing a Positive to a Positive will equal a Positive}\\\text {Multiplying/Dividing a Positive to a Negative will equal a Negative}\\\text {Multiply/Dividing a Negative to a Negative will equal a Positive}\\\text {Multiplying/Dividing a Negative to a Positive will equal a Negative}$

$\text {Now Divide!}$

$\text {12/-4=}$

$\fbox {-3}$

$\text {As you can see 4 is a negative number so our result came out as a negative number.}$

$\text {Want to see if your answer is correct? Sure! Do the opposite of Dividing and Multiply!}$

$\text {-3*-4=12}$

$\text {Best of Luck!}$

$\text {-LimitedX}$

6 0

3 years ago