2/3x -1 = 9 what is the value of x?

it takes Maya 30 minutes to solve 5 logic puzzles, and it takes Amy 28 minutes to solve 4 logic puzzles. use models to show the

7nadin3 [17]

Answer:

Maya ---> $6\ minutes/puzzle$

Amy ----> $7\ minutes/puzzle$

see the procedure

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Let

m ---> the number of minutes

p ---> the number of puzzles

In this problem, the relationship between the variables m and p represent a proportional variation

so

$m=kp$

Maya

it takes Maya 30 minutes to solve 5 logic puzzles

we have

m=30, p=5

Determine the value of the constant of proportionality k

$k=\frac{m}{p}$

substitute the given values

$k=\frac{30}{5}=6\ minutes/puzzle$

The value of the constant k is the same that the slope or unit rate

The equation is equal to

$m=6p$

Amy

it takes Maya 28 minutes to solve 4 logic puzzles

we have

m=28, p=4

Determine the value of the constant of proportionality k

$k=\frac{m}{p}$

substitute the given values

$k=\frac{28}{4}=7\ minutes/puzzle$

The value of the constant k is the same that the slope or unit rate

The equation is equal to

$m=7p$

8 0

3 years ago

A bag contains 7 marbles: 4 red, 2 yellow, and 1 green. Three

qwelly [4]

Answer:

Step-by-step explanation:

you have 7 reds of 14 total.

the 1st marble has 7 of 14 probability of being red

the 2nd has 6 of 13 of being red

the 3rd has 5 of 12 of being red

multiplying this out you have:

(7/14)*(6/13)*(5/12)=210/2184

THAT will condense down to 5/52 or 9.615%

this does assume not placing the balls back in between draws

if you do put them back in between draws you would have 7 of 14 chance each draw

that would give you by multiplying out

(7/14) * (7/14)* (7/14) = 343/2744

Found it online lol

that condenses to 1 of 8 or 12.5%

Found it online lol

3 0

2 years ago

According to a recent study, US adults spent on average 29 hours per month using the PC internet. The time spent on the PC inter

Andrei [34K]

Answer: The percent of US adults spend above 29 hours per month on PC internet = 50%

Step-by-step explanation:

Given: , US adults spent on average 29 hours per month using the PC internet.

As the me spent on the PC internet follows a normal distribution.

And there is 50% of the population lies above the mean and below the mean.

Then, the percent of US adults spend above 29 hours per month on PC internet = 50%

5 0

3 years ago

Evaluate -5x2-3x for x= -2.

ki77a [65]

Answer:

are u a girl

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Simplify. Consider all cases. |14−(x−6)|

yanalaym [24]

Answer:

20-x; -20+x; -20-x; 20+x

Step-by-step explanation:

|14-x+6|

|20-x|

20-x; -20+x; -20-x; 20+x

4 0

3 years ago

Read 2 more answers