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Georgia [21]
2 years ago
12

Suppose that a class contains 10 boys and 15 girls, and suppose that eight students are to be selected at random from the class

without replacement. let x denote the number of boys that are selected, and let y denote the number of girls that are selected. find e(x − y ).
Mathematics
1 answer:
Anuta_ua [19.1K]2 years ago
5 0
Not enough information
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Find the GCF of the expression.<br> 3a²+9<br> A. 3<br> B. a<br> C. a+3<br> D. 3a
elixir [45]

Answer:

3

Step-by-step explanation:

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4 0
1 year ago
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The weight, y, in pounds, of kittens was tracked for the first 8 weeks after birth where t represents the number of weeks after
marshall27 [118]

Answer:

Step-by-step explanation:

The mentioned relationship for the weight, in pounds, of the kitten with respect to time, in weeks, is

\hat y =1.7 +1.48t

Weight of the kitten after 10 weeks

\hat y =1.7 +1.48\times 10

\hat y =16.5 pounds

This modeled equation is based on the observation of the early age of a kitten where the kitten is in its growth period, but in the early stage the growth rate in the weight of the kitten was the same but the growth of any living beings continues till the adult stage. So, after some time, in real life situation, this weekly change in weight will become zero, So, this model is not suitable to measure the weight of the kitten over the larger time period.

Here, t= 10 weeks is nearby the observed time period, so the linearly modeled equation can be used to predict the weight.

Hence, the weight of the kitten after 10 weeks is 16.5 pounds.

8 0
2 years ago
What is the common ratio between successive terms in the sequence?
ycow [4]

Answer:

One third.

Step-by-step explanation:

Common ratio = 9/27 = 1/3

3/9 = 1/3

1/3 = -/3.

this kaden is right

8 0
2 years ago
A ballplayer catches a ball 3.4s after throwing it vertically upward. with what speed did he throw it, and what height did it re
Daniel [21]

From the equation of motion, we know,

s=ut+\frac{1}{2}at^{2}

Where s= displacement

u= initial velocity

a= gravitational force

t= time

Displacement is 0 since the ball comes back to the same point from where it was thrown.  

A = -9.8m/s^{2} since the ball is thrown upwards.

Plug the known values into the equation.

=> 0=u\left ( 3.4 \right )+\frac{1}{2}\left ( -9.81 \right )(3.4^{2})

Solving for u gives :

u= 16.67 m/ sec ....... equation (1)

At maximum height, final velocity i.e v is 0

Time take to reach the top = \frac{3.4}{2} = 1.7 sec

v^{2}=u^{2}+2as

=> 0=(16.67)^{2}+2(-9.81)(s)

Solving for s we get

s= 14.16 m


4 0
2 years ago
Cynthia is standing at the center of a circular playground. Which statement is true with respect to Cynthia’s position?
sergeinik [125]
D. The distance from Cynthia to pole 3 us equal to the distance from Cynthia to pole 1.
pole one and three are like the same distance apart from Cynthia.
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