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2 years ago

Can someone plz help me :(

Mathematics

2 answers:

Andrew [12]2 years ago

4 0

Answer:

The last answer on your last image

Step-by-step explanation:

anastassius [24]2 years ago

4 0

It’s the last question

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Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing four red marbles, three green ones, fo

NeTakaya

In this question, Suzan is taking 5 marble from a bag containing 4 red marbles, 3 green ones, 4 white ones, and 3 purple ones. The total marble in the bag should be: 4+3+4+3= 14. The question is how much the probability to get 1 red, 2 green, 1 white and 1 purple.

Ways to take 5 marble out of 14=14C5= 14!/5!9!= 2002

Ways to take 1 red marble out of 4= 4C1= 4

Ways to take 2 green marble out of 3= 3C2= 3

Ways to take 1 white marble out of 4= 4C1= 4

Ways to take 1 purple marble out of 3= 3C1= 3

Then the probability would be: 4*3*4*3/ 2002= 144/2002= 72/1001

5 0

3 years ago

Given f(x) = -4x+7 and g(x) =x^3 , choose the expression for (fog)(x)

SOVA2 [1]

Answer:

-4x^3 + 7

Step-by-step explanation:

(fog)(x) ➡ write whole value of g(x) instead of x in the f(x) function

-4 (x^3) +7 ➡ -4x^3 +7

5 0

3 years ago

Read 2 more answers

I need help is due in 20 minute

AfilCa [17]

A is 5 , b is 1 , c is 4 , d is 3, and E is 2

7 0

3 years ago

A chef cooks rice using a 1: 2 ratio of dry rice to water. Her recipe calls for 9.5 cups of dry rice.

tigry1 [53]

Answer:

19 cups of water.

Step-by-step explanation:

1:2 ratio

1=9.5

2=9.5*2= 19

8 0

2 years ago

A veterinarian collects data on the number of times race horses are raced during their careers. The veterinarian finds that the

SpyIntel [72]

Answer:

c. (12.12, 18.48)

Step-by-step explanation:

Hello!

The study variable is X: number of times a racehorse is raced during its career.

The average number is X[bar]= 15.3 and the standard deviation is S= 6.8 obtained from a sample of n=20 horses.

To estimate the population mean you need that the variable has a normal distribution, in this case, we have no information about its distribution so I'll assume that it has a normal distribution. With n=20 the most accurate statistic to use for the estimation is a Students-t for one sample, the formula for the interval is:

X[bar] ± $t_{n-1;1-\alpha /2} * \frac{S}{\sqrt{20} }$

$t_{n-1;1-\alpha /2} = t_{19;0.975}= 2.093$

[15.3 ± 2.093 * $\frac{6.8}{\sqrt{20} }$ ]

[12.12; 18.48]

Using a significance level of 95% you'd expect that the true average of times racehorses are raced during their career is included in the interval [12.12; 18.48].

I hope it helps!

8 0

3 years ago