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yaroslaw [1]
3 years ago
7

Line QR goes through points Q(0,1) and R(2,7). which equation represents line QR

Mathematics
2 answers:
vodka [1.7K]3 years ago
3 0
M= (7-1)/(2-0)=3
y=3x + c
plug in Q 
1= 3 x 0 +c
=> c =-2
=> the equation represents line QR is y=3x -2
Ainat [17]3 years ago
3 0

y – 1 = 3x

since Q is (0,1) that would make 1 the y-intercept.

using a formula to find the slope we end up with 3.

1 is a negative because when moved to the other side it must be positive.

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Quadrilateral JKLM is a parallelogram. What is the m kjn
artcher [175]

Answer:

solution: KL-2ML. LKIN=63x2=126*

Step-by-step explanation:

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4 0
2 years ago
A playgroud has a lenght of 40 ft permermter of 120 ft
ohaa [14]
What is the question? if you are looking for the sides 2 sides are 40 and the other 2 are 20.
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3 years ago
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What is (radical 75 y 19 ) in the simplest form.
Liono4ka [1.6K]

Answer:

7519 is already in the simplest form. It can be written as 3.947368 in decimal form (rounded to 6 decimal places).

Step-by-step explanation:

3 0
3 years ago
The prevalence of cigarette smoking in the united states is in decline if the percentage of smokers in 2014 was 16.7% and the pe
astraxan [27]

The linear formula for the sequence whose terms represent the percentage of americans who smoke n years after 2014 is:

a(n) = -5.6n + 16.7

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and for a time-dependent function, can also be interpreted as the initial value.

In this problem:

  • The percentage of smokers in 2014 was 16.7%, hence the initial value is b = 16.7
  • The percentage is decreasing by 5.6% each year, hence the slope is m = -5.6.

Then, the <em>equation </em>is:

y = mx + b

a(n) = -5.6n + 16.7

You can learn more about linear functions at brainly.com/question/24808124

7 0
3 years ago
Linda's penny bank is 2/3 full. After she removes 80 pennies, it is 1/2 full. How many pennies can Linda's bank hold?
Ksju [112]
Let x = the total number of pennies her piggy bank can hold.
Then 2/3x = the number of pennies she started with
Then 2/3x - 80 = the number of pennies she has left after taking out 80 pennies.
Then 1/2x = the number of pennies she has left after taking out 80 pennies.
Build the equation.

2/3x - 80 = 1/2x

Subtract 1/2x from each side of the equation.

(2/3x - 80) - 1/2x = 1/2x - 1/2x

1/6x - 80 = 0

Add 80 to both sides of the equation.

(1/6x - 80) + 80 = 0 + 80

1/6x = 80

Divide both sides by 1/6.

(1/6x) / 1/6 = 80 / 1/6

x = 480

So, Linda's piggy bank can hold 480 pennies!

8 0
3 years ago
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