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Ludmilka [50]
3 years ago
12

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is

3131 hours and the median is 27.227.2 hours. twenty-four of the families in the sample turned on the television for 1616 hours or less for the week. the 7th percentile of the data is 1616 hours. step 2 of 5 : approximately how many families are in the sample? round your answer to the nearest integer.
Mathematics
1 answer:
nikdorinn [45]3 years ago
5 0
Not sure on the number listed as median ? 27.227.2? Please clarify.
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1. Consider drawing a single card from a well shuffled 52-card deck. Let E1 be an event of getting a heart card and E2 be an eve
Paraphin [41]
<span>1) Find P(E1UE2)
E1 probability= 1/2</span>
<span>There are 26 red cards in a 52 card deck, so the probability of choosing a red card is = 26/52 = 1/2
E2 probability= 12/ 52 or 3/13</span>
<span>The face cards are: Jacks, Queens, and <span>Kings. There are four suits, so in each suit there are one jack, one queen and one king. The probability is 3 x 4= 12 divided by the total number of cards.

2)</span></span><span>the probability of drawing a blue ball on the first draw: 4 /10
</span>the probability of drawing a white ball on the second drawn: 6/9 (because there is less one ball from the previous draw).
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6 0
3 years ago
A Chain of Events
OverLord2011 [107]
Each person should ride the bike for 4 miles, so that every one has to walk 8 miles and ride 4 miles.

If they had 2 bikes, each person will ride for 8 miles, 4 miles on each bike, and then walk 4 miles.

5 0
3 years ago
Which equation represents the circle shown in the graph?
marta [7]

Answer:

i think 3

Step-by-step explanation:

8 0
3 years ago
Select from the drop-down menu to correctly complete the sentence.
dedylja [7]

Answer:

as likely to occur

Step-by-step explanation:

becasue if the probabilty is 0.5 its 1/2 or 50/50 chance it will happen

6 0
3 years ago
GJ is a midsegment of triangle DEF, and HK is a midsegment of triangle GFJ. What is the length of HK?
loris [4]

Answer:

Option B) 4 centimeters

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the value of n

we know that

a) GJ is a midsegment of triangle DEF

then

G is the midpoint segment DF and J is the midpoint segment EF

DG=GF and EJ=JF

b) HK is a midsegment of triangle GFJ

then

H is the midpoint segment GF and K is the midpoint segment JF

GH=HF and JK=KF

In this problem we have

HF=7 cm

so

GH=7 cm

GF=GH+HF ----> by addition segment postulate

GF=7+7=14 cm

Remember that

DG=GF

substitute the given values

2n-1=14

solve for n

2n=14+1

2n=15

n=7.5\ cm

step 2

Find the length of GJ

we know that

The <u><em>Midpoint Theorem</em></u> states that the segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side

so

GJ=\frac{1}{2}DE

we have

GE=2n+1=2(7.5)+1=16\ cm

substitute

GJ=\frac{1}{2}16=8\ cm

step 3

Find the length of HK

we have that

HK=\frac{1}{2}GJ ----> by the midpoint theorem

we have

GJ=8\ cm

substitute

HK=\frac{1}{2}8=4\ cm

7 0
3 years ago
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