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Lelu [443]
3 years ago
14

A survey of high school juniors found that 82% of students plan on attending college. If you pick three students at random, what

is the probability that at least two plan on attending college?
I know the equation is:
nCx(p)^x(q)^n-x
but i cant remember what variable means what..
Mathematics
2 answers:
AveGali [126]3 years ago
7 0

Lesson 8: Binomial Distribution

1. a. 91%

2. a. 5.1%

3. c. s^5-25s^4v+250s^3v^2-1250s^2v^3+3125sv^4-3125v^5

4. 55.8%

cupoosta [38]3 years ago
6 0
<span> binomdist with n = 3, p = 0.82, q = 1-0.82 = 0.18
P[≥2] = P[2] + P[3] = 3c2 *0.82^2*0.18 + 0.82^3 ≈ 91%
hope it helps
</span>
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A mother is 4 times as old as her daughter. in 3 years, the mother will be 3 times as old as her daughter. how many years old is
Lunna [17]
The mother is 24 years old because her daughter is currently 6 years old and im three years the daught will be 9 and the mother will be 27 years old..
6 0
3 years ago
7. Which expression is a factor of x² + 2x – 15?
Lubov Fominskaja [6]

Answer:

(x-3) is the correct expression

Step-by-step explanation:

To factor you split the expression apart -

x² + 2x – 15

This breaks up to (x+5)(x-3)

If you multiply (FOIL) these you get your expression x² + 2x – 15

Your answer choices do not include (x+5) so it must be (x-3)

<em>I hope this helps!</em>

<em></em>

7 0
3 years ago
What is the value of y when x = -3 4x+2y=8
Katen [24]

Answer:

y=10

Step-by-step explanation:

4(-3)+2y=8

-12+2y=8

move the -12 0ver to the 8 by adding

2y=20

divide by 2

y=10

8 0
4 years ago
Read 2 more answers
Triangles ABC and JKL are similar. What is m
erica [24]
H. 66

One triangle equals 180 degrees so you subtract 48 - 180= 132. Then you divide 132 by two because the bottom two angles are equal so 132/2 equals 66


Sorry that was confusing hope this helps!
5 0
3 years ago
118.5/5 rounded to nearest tenth
Marina CMI [18]
118.5/5= 23.7 so you would keep it as 23.7 because there isn't anythinh to make the 7 round up 
6 0
3 years ago
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