All categories

3 years ago

(Will mark brainliest!!!) 20 PTS !!

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

4 0

Answer:

probability[Number of 6 random sample do not have cavities] = 0.8

Step-by-step explanation

Given:

Number of student do not have cavities = 60%

Number of random sample = 9 children

Find:

Probability[Number of 6 random sample do not have cavities]

Computation:

n = 9

p = 60% = 0.6

P(At least 6)

Probability[Number of 6 random sample do not have cavities] = 1 - P(Less than 6)

Probability[Number of 6 random sample do not have cavities] = 1 - P(Less than or equal to 6)

Probability[Number of 6 random sample do not have cavities] = 0.8

You might be interested in

Forever Fitness charges $50 a month and $15 for each exercise class you take. Peachtree Gym charges $75 a month and $10 for each

Anarel [89]

Answer:

dont know sorry

Step-by-step explanation:

3 0

3 years ago

Find the common ratio of the geometric sequence -7,-14,-28

Aneli [31]

Answer:

Step-by-step explanation:

To find the common ratio, take the second term and divide by the first term

-14/-7 = 2

Check by dividing the third term by the second term

-28/-14 = 2

The common ratio is 2

7 0

3 years ago

Read 2 more answers

Please help asap plz

butalik [34]

Answer:

im think its 20 and 39 im not sure tho

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

(x+4)(x+11)=0 <br> what do i do

Talja [164]

FOIL first outer inner last it’s distribution

8 0

3 years ago

Read 2 more answers

g A 5 foot tall man walks at 10 ft/s toward a street light that is 20 ft above the ground. What is the rate of change of the len

vredina [299]

Answer:

$-\frac{10}{3}ft/s$

Step-by-step explanation:

We are given that

Height of man=5 foot

$\frac{dy}{dt}=-10ft/s$

Height of street light=20ft

We have to find the rate of change of the length of his shadow when he is 25 ft form the street light.

ABE and CDE are similar triangle because all right triangles are similar.

$\frac{20}{5}=\frac{x+y}{x}$

$4=\frac{x+y}{x}$

$4x=x+y$

$4x-x=y$

$3x=y$

$3\frac{dx}{dt}=\frac{dy}{dt}$

$\frac{dx}{dt}=\frac{1}{3}(-10)=-\frac{10}{3}ft/s=-\frac{10}{3}ft/s$

Hence, the rate of change of the length of his shadow when he is 25 ft from the street light= $-\frac{10}{3}ft/s$

7 0

3 years ago