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2 years ago

I need help with this math question..

Mathematics

2 answers:

scoundrel [369]2 years ago

6 0

Answer:

15w + 5

Step-by-step explanation:

(2w + 13w) + (4 + 1)

I think that's correct

n200080 [17]2 years ago

6 0

This should be correct!

You might be interested in

7. Sky Castle Company is conducting research on 3 independent communities of 12 members each to see how they have been consuming

tresset_1 [31]

Answer:

1.98% probability that at least 11 members are categorized as low risk participants in two of three communities

Step-by-step explanation:

To solve this question, we need to use two separate binomial trials.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

Probability of at least 11 members being categorized as low risk participants.

12 members in the sample, so $n = 12$

30% chance to be categorized as high risk participants. So 100-30 = 70% probability of being categorized as low risk participants. So $p = 0.7$

This probability is

$P(X \leq 11) = P(X = 11) + P(X = 12)$

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 1) = C_{12,11}.(0.7)^{11}.(0.3)^{1} = 0.0712$

$P(X = 2) = C_{12,12}.(0.7)^{12}.(0.3)^{0} = 0.0138$

$P(X \leq 11) = P(X = 11) + P(X = 12) = 0.0712 + 0.0138 = 0.0850$

What is the probability that at least 11 members are categorized as low risk participants in two of three communities?

For each community, 8.50% probability of at least 11 members being categorized as low risk. So $p = 0.085$

Three comunities, so $n = 3$

This probability is P(X = 2).

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 2) = C_{3,2}.(0.085)^{2}.(0.915)^{1} = 0.0198$

1.98% probability that at least 11 members are categorized as low risk participants in two of three communities

6 0

3 years ago

This is for middle school 8th grade new question need help last one :)

hodyreva [135]

Answer:

He Iransition 1 2 34 y= $ 50 -3.75 (x) y= $30 - 19.99 (x) 7

Step-by-step explanation:

6 0

3 years ago

Find the missing factor 8b^2+7b-1=(b+1)()

shusha [124]

$8b^2+7b-1=8b^2+8b-b-1=8b(b+1)-1(b+1)=(b+1)(8b-1)$

7 0

4 years ago

If 27% of the group voted to change its

liubo4ka [24]

Answer:

243 people did not vote

Step-by-step explanation:

First you would calculate the number of people who DID vote:

27% + 43% = 70% (this is how many people voted)

you would then subtract to find the percent of people who DIDNT vote:

100% - 70% = 30%

Finally you would convert the % into an actual number.

0.30 (or 30%) x 810 members = 243 members

So, 243 members didn't vote.

Hope this helps!

5 0

3 years ago

X+y=1 2x-y=-2 Please help

Illusion [34]

Hi fren,

x=−y+1
and for the second one...
y=2x+2

x-intercept >> (−1,0)
y-intercept >> (0,2)

4 0

3 years ago

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