1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
melisa1 [442]
3 years ago
15

NEED HELP WITH PART B

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
6 0

Answer:

y = -20x + 100

Step-by-step explanation:

As per your requirement For Part B, the solution is

The equation in slope-intercept form to model the relations is below:-

To reach 2 points on the graph the line passes through

lets use p1(0, 100), p2(1, 80)

now we will compute the slope:

m = \frac{(y2 - y1)}{(x2 - x1)}

m = \frac{(80 - 100)}{(1 - 0)}

= -20

and now use line equation in form point-slope:

y - y1 = m(x - x1)

y - 100 = -20(x - 0)

y = -20x + 100

You might be interested in
Please help! I've been working on this for a few days and I just don't understand, it's due in a few hours. Thank you.
never [62]

Answer:

Part A: α = arc tan (y/x) = tan⁻¹ (y/x)

Part B: quadrant II α = arc tan (- y/x) = arc (- tan (y/x)) = - tan⁻¹ (y/x) 180°>α>90°

            quadrant III α = arc tan (-y)/(-x) = arc tan (y/x) = tan⁻¹ (y/x) 270°>α>180°

            quadrant IV α = arc tan (- y/x) = arc (- tan (y/x)) = - tan⁻¹ (y/x) 360°>α>270°

Part C: quadrant II 180°>α>90°  α = tan⁻¹ (-6/1) = - tan⁻¹ 6 = 180° - 80.53° = 99.47°

Step-by-step explanation:

PART A:

In this case we will use trigonometric function tanα to calculate angle α:

tanα = y/x => α = arc tan (y/x) = tan⁻¹ (y/x)

This formula is use in general way and in first quadrant  90°>α>0°

Part B:

But in the other quadrants you must know to use unit circle to reduce angle from II, III and IV quadrant to the first quadrant.

If angle is in the quadrant II  180°>α>90° then

tanα = - tan (180°-α)

If angle is in the quadrant III  270°>α>180° then

tanα = tan (α-180°)

If angle is in the quadrant IV  360°>α>270° then

tanα =- tan (360°-α)

Part C:

vector w (x,y) = (-1,6) this vector lies in quadrant II      180°>α>90°

180°- α = tan⁻¹ (-6/1) = - tan⁻¹ 6 = 80.53°  => 180° - α = 80.53°

α = 180° - 80.53 = 99.47°

It's not easy to understand this, but it's not easy for me to explain.

God with you!!!

5 0
2 years ago
Corinna has $80. She wants to buy a $256 plane ticket. She will save up her earnings from working at the museum where she earns
Gnesinka [82]

Answer:8

Step-by-step explanation:

8 0
3 years ago
How do I find the answers
jasenka [17]

Answer:

3. They're adding by 5 so,

Step-by-step explanation:

6 0
3 years ago
What is the total surface area of three of these ice cubes?
Veseljchak [2.6K]
The answer is 18 feet2 

7 0
3 years ago
Read 2 more answers
What is the factored form of the expression over the complex<br> numbers?<br> 16x2 + 9y2
Hunter-Best [27]

Answer:

(4x -3yi) (4x+3yi)

Step-by-step explanation:

We have a^2 + b^2

Over  the complex number, this is equal to

(a-bi) (a+bi)

(4x -3yi) (4x+3yi)

4 0
3 years ago
Other questions:
  • Plz help! ill give brainliest​
    8·2 answers
  • Sam paid 8.28 for 18 stamps at this rate how much would it cost sam to buy 12 stamps
    14·1 answer
  • The top of a rectangular table has an area of 18x^2 + 69 + 60. The width of the table is 3x + 4 . What is the length of the tabl
    11·2 answers
  • Factor 1/2 out of 1/2z+9.
    9·2 answers
  • Which of the following represents a financially responsible decision
    13·1 answer
  • What is the answer for this equation "10=z/2+7"
    12·2 answers
  • )
    15·1 answer
  • How to find slope intercept form with one point and the slope?
    15·1 answer
  • Express this to single logarithm
    6·1 answer
  • Solve for a, if F= w/9a <br> need step by step explanation
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!