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Marrrta [24]
3 years ago
8

HELP FASTTT

Mathematics
2 answers:
vichka [17]3 years ago
7 0

Answer:

The answer is B

Step-by-step explanation:

erik [133]3 years ago
6 0
B.the interquartile range for group a students is 1.5 more than the interquartile range for group b students
B.the interquartile range for group a students is 1.5 more than the interquartile range for group b students
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Y = x^2 − 3x + 8. axis of symmetry
dmitriy555 [2]
Points-(0,6)
Equation- y=x^2+5
X=0 Y=5
5 0
2 years ago
Couple has got 5 children , what is the probability of have 3girls and 2 boys ?
Delicious77 [7]
5 children so you have 2^5=32 possibilities to "assign" genders
P(3 girls):
how many possibilities are there to "assign" the 3 girl-genders to the 5 children? the first girl has 5 possibilities then the next 4, 3 -> 5*4*3=60
but these possibilities include orders of assigned genders, while children 1-5 might differ the gender "girl" is always the same so we have the remove the orderings of the 3 girl-gender assignments which is 3*2*1=6
if we divide 60/6 we get 10 possibilities to have 3 girls, so what is the resulting chance? the 10 possibilities divided by the total 32 possibilities: 10/32=5/16=P(3 girls)=P(2 boys)

this is a bit of lengthy way of saying "use the binomial coefficient" equation/explaining it a bit which is (n!)/(k!(n-k)!) with n=5, k=3:
5*4*3*2*1/((3*2*1)*(2*1))=
5*4*3*2/(3*2*2)=
5*4*3*2/(3*4)=
5*2=
10 possibilities again


P(girls>=4)=P(boys<=1)=P(boys=1)+P(boys=0)
(or P(girls=4)+P(girls=5))

P(boys=0) is the easy case: simply multiply the chance of getting a girl 5 times: (1/2)^5=1/32
P(boys=1)= again the binomial coefficient with n=5 and k=1:
5*4*3*2*1/((1)*(4*3*2*1))=
5*4*3*2/(4*3*2)=
5 possibilities
so the P(boys=0)=1 possibility + P(boys=1)=5 possibilities totals to 6 possibilities
again the chance is the 6 possibilities divided by all 32 possibilities: 6/32=3/16

P(alternate gender starting with boy): when thinking about the possibilities then there is only a single way to build that order: bgbgb, so one possibility
knowing there is only one way we already know P(alternate...)=1/32 by again dividing by the total amount of possibilities
the alternative way would be to multiply P(boy)*P(girl)*P(boy)*P(girl)*P(boy)=(1/2)^5= 1/32 again





5 0
3 years ago
An observer 12 m away from the foot of tree observes that the angle of elevation is 30° find the height of tree
lilavasa [31]

Answer:

in drawing

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
URGENT i need to check my answer
ziro4ka [17]

Using conversion of units, it is found that Dylan needs another 1.29 ounces of cheese.

----------------------------

  • The conversion of units are applied using a rule of three.
  • Each gram has 0.035274 ounces. How many ounces are there in 150 grams?

1 gram - 0.035274 ounces

150 grams - x ounces

Applying cross multiplication:

x = 150 \times 0.035274 = 5.29

----------------------------

  • Dylan has 4 ounces of cheddar cheese.
  • He needs 5.29 ounces.
  • Thus, he needs another 5.29 - 4 = 1.29 ounces.

A similar problem is given at brainly.com/question/13251881

4 0
2 years ago
Convert. If necessary, round to the nearest tenth. (Recall: 1.06 qt. ≈ 1 L) 15 L qt.
Leona [35]
1l\approx1.06qt.\\\\therefore\\\\15l\approx15\cdot1.06qt.=\huge\boxed{15.9qt.\to\boxed{a.}}
7 0
3 years ago
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