if it takes 60 minutes for 9 people to paint 5 walls thhen how many minutes does it take for 4 people to paint 6 walls

Answers

Answer 1

Answer:
-- 9 people paint 5 walls in 60 minutes

-- 9 people paint (5 / 5) = 1 wall in (60 / 5) = 12 minutes

-- (9 / 9) = 1 person paints 1 wall in (9 x 12) = 108 minutes

-- 1 person paints (1 x 6) = 6 walls in (108 x 6) = 648 minutes

-- (1 x 4) = 4 people paint 6 walls in (648 / 4) = 162 minutes .

Answer 2

Answer: 15 i think hope i helped! ;)

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anita has two sisters and three brothers. the mean of all their ages is 6 years. what will their mean age be 10 years from now?twenty years from now?

Answers

Answer:
Now: 6 yr mean age
in 10 yrs? 16 yr mean age
in 20 yrs? 26 yr mean age

Why? Because regardless of the relationship between each sibling's age, your always adding the 10yrs to each individual, which you are then dividing out to determine the mean age. See proof below:

Including anita, there are 6 people. We'll define each age as an unknown variable. Assume we know nothing about the relationships between their ages

for example sake
anita's age = a
sister 1's age = b
sister 2's age = c
brother 1's age = d
brother 2's age = e
brother 3's age = f

Now:
mean age = (a + b + c + d + e + f)/(6 people) = 6 yrs

in 10 yrs:
mean age = ((a+10) + (b+10) + (c+10) + (d+10) + (e+10) + (f+10))/(6 people)
mean age = (a + b + c + d + e + f + 60)/(6 people)
mean age = (a + b + c + d + e + f)/(6 people) + (60)/(6 people)
mean age = (a + b + c + d + e + f)/(6 people) + 10

Notice the first term is the same expression of the mean age for "Now"
Thus, in 10 yrs:
mean age = 6 + 10 = 16 yrs

The same principle applies for "x" yrs from now, as long as we know what the mean age is "Now"

Answer:

10 years from now= 16

20 years = 26

Step-by-step explanation:

PLEASE HELPP!!!!! WILL GIVE BRAINLIEST The ratio of m∠PQR to m∠PQS is 3:2. What is m∠RQS?

answers are
18
36
50
54

Answers

ANSWER

$m∠RQS =36 \degree$

EXPLANATION

From the diagram, m∠PQR and m∠RQS are complementary.

This means that the two angles will add up to 90°.

$m∠PQR + m∠RQS = 90 \degree...(1)$

Also, we were given that,

$m∠PQR: m∠RQS = 3:2$

$(m∠PQR)/(m∠RQS ) = (3)/(2)$

This implies that,

$m∠PQR= (3)/(2) m∠RQS ....(2)$

We put equation (2) into equation (1) to get,

$(3)/(2) m∠PQS + m∠RQS = 90 \degree$

Multiply through by 2 to get,

$3m∠PQS +2 m∠RQS =180 \degree$

$5 m∠RQS =180 \degree$

Divide through by 5.

$m∠RQS =36 \degree$

What is 6/10 +19/100

Answers

for this question you should know that 6/10 is equal to 60/100 so now you can say:
60/100 + 19/100 = 79/100 = 0.79 :))))
i hope this is helpful
have a nice day

79/100 because on the 6/10 you put two zeros on the end of it than add them

PLEASE HELP! THIS IS THE LAST QUESTION ON MY HOMEWORK!Fracisco's game involves 3 green,2 yellow,4 red, and 3 black marbles. If he randomly draws three marbles from the bag, without replacement, what is the probability that he will draw yellow, and then red, and then black?

Answers

(2/12) X (4/11) X (3/10) = .018

(2/12) X (4/11) X (3/10) = .018

A dentist was making note of his upcoming appointments with different aged patients and the reasons for their visits.The probability that an appointment is with patients over 60 years old is 0.2, and the probability that it is for a broken tooth is 0.4.
What is the probability that a randomly chosen appointment is with patients over 60 years old or is for a broken tooth if those are independent events?

Answers

Answer:

.08

Step-by-step explanation:

40% of 20% is 8%

How are equivalent fractions used when subtracting unlike fractions?

Answers

When you subtract unlike fractions so you need a common denoimeter

Example:

1/2-3/4

1/2= to 2/4

3/4 - 2/4=1/4

Answer: 1/4

they are used because u need a common denominator

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PLEASE HELP I GIVE THANKS