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Dmitry [639]
2 years ago
9

The slope of a line is 2. The y-intercept of the line is –6. Which statements accurately describe how to graph the function?

Mathematics
2 answers:
Ne4ueva [31]2 years ago
7 0
A because (0,-6) is the y-intercept so you start at the point you know. Then because slope is a rise over run fraction the slope can also be written as 2/1 which is rise 2 over 1.
Semenov [28]2 years ago
4 0

Answer:

A is the correct option.

Step-by-step explanation:

The slope of the line is 2 and the y-intercept is -6.

y-intercept is the point where x is zero. Hence, the point is (0,-6)

When we graph a linear function by slope-intercept method, first of all we plot the y-intercept.

Hence, first of all we plot the point (0,-6)

Now, slope is given by

\text{slope}=\frac{rise}{run}

if rise is positive then we move up from the y -intercept and if negative then move down. We keep run always positive and hence we move right from the rise point.

\text{slope}=2=\frac{rise}{run}

rise = 2

run = 1

Rise is positive hence, we move 2 units up from the point (0,-6) and then move 1 unit right to get the next point. Then we draw a line passing through these points.

A is the correct option.


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For positive acute angles
insens350 [35]

9514 1404 393

Answer:

  77/85

Step-by-step explanation:

<u>Given</u>:

  cos(A) = 4/5

  sin(B) = 15/17

<u>Find</u>:

  cos(A-B)

<u>Solution</u>:

From your knowledge of Pythagorean triples, you know that one of them is (3, 4, 5) and another is (8, 15, 17). Using your imagination, or by drawing the triangles, you can determine the needed trig functions to be ...

  sin(A) = 3/5

  cos(B) = 8/17

__

Alternatively, you can use the Pythagorean identity to find ...

  sin(A) = √(1 -cos²(A)) = √(1 -(4/5)²) = √(9/25) = 3/5

  cos(B) = √(1 -sin²(B)) = √(1 -(15/17)²) = √(64/289) = 8/17

__

Then application of the angle difference formula is straightforward.

  cos(A -B) = cos(A)cos(B) +sin(A)sin(B)

  cos(A -B) = (4/5)(8/17) +(3/5)(15/17) = (32 +45)/85

  cos(A -B) = 77/85

_____

Some graphing calculators can express the result ...

  cos(arccos(4/5) -arcsin(15/17)) ≈ 0.90588235294

  ... as the fraction 77/85

5 0
2 years ago
Goodlife charges its members $30 per month for a gym membership. They currently have 75 clients.
Sauron [17]
They should charge $40 per membership, and they will make a maximum revenue of $2400
4 0
2 years ago
A triathlon includes a .5 km swim, 40 km bike, and a 10 km run. Mr. B completed the swim in 25 minutes and 10 seconds, and the b
Dmitry_Shevchenko [17]

Answer:

3.33 meters per second

Step-by-step explanation:

you must find the total time that Mr. B spent to complete the swim and bike.

Information:

0h 25' 10'' ---------> Swim

1h 30' 50'' ---------> Bike

hours = 0 + 1 = 1\\minutes = 25+30 = 55\\seconds = 10+50=60\\

he spent 1h 55' 60'', this is 1h 56'.

now you must substract this time from the record time to find the time alloted to run:

first you convert both times into minutes:

record \ time = 2(60) + 46 = 166 \ minutes \ \ \ \ multiply \ hours \ by \ 60 \ minutes\\time\ swim \ and \ bike = 1(60) + 56 = 116 \ minutes\\

now substracting:

time \ to \ run \ = record \ time \ - \ time \ swim \ and \ bike\\time \ to \ run \ = 166 - 116 = 50 \ minutes

so he must travel 10 km in 50 minutes, that is:

speed = distance/time

speed = \frac{10}{50} \frac{km}{min}

1 km is equal to 1000 meters and 1 minute is equal to 60 seconds.

speed = \frac{(10)}{(50)}\frac{(1000) meters}{(60) sec}\\\\speed = \frac{(10000)}{(3000)}\frac{meters}{sec} \ \ \ \ \ \ \ \ \ multiply \\\\speed = 3.33 \ meters/sec

so Mr.B's speed must be 3.33 meters/sec

8 0
2 years ago
Sammy went on a class trip to the art museum and sketched a scale drawing of a famous mural. The original painting was 72 inches
Margarita [4]
Since the length of the original painting is 108 inches, you take 1/12 and multiply it by 108 and get 9 inches.
the length of Sammy's drawing is 9 inches.
4 0
2 years ago
Read 2 more answers
Which function is a quadratic function? c(x) = 6x + 3x3 d(x) = x – 8x4 p(x) = –5x – x2 k(x) = 2x2 + 9x4
trapecia [35]
Quadratic means 2nd degree

means highest power of variable is 2


c(x)=6x+3x^3
3rd degree, not quadratic

d(x)=x-8x^4,
4th degree, not quadratic

p(x)=-5x-x^2
2nd degree, it's quadratic

k(x)=2x^2+9x^4
4th degree, not quadratic

answer is p(x)=-5x-x^2
6 0
2 years ago
Read 2 more answers
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