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
yuradex [85]
3 years ago
7

Need to find the direction angle for each vector. #10 and #12 please!

Mathematics
1 answer:
crimeas [40]3 years ago
5 0

Answer:

10)  - 45 degrees

12)  0 degrees

Step-by-step explanation:

10)

Find the x and y components that define the vector that joins C with D:

x-component: -4 - (-8) = - 4 + 8 = 4

y-component:  4 - 8 = -4

use the tangent function to find the angle \theta:

tan(\theta)=\frac{y-comp}{x-comp}=\frac{-4}{4}  = -1\\\theta = -45^o

12)

Find the x and y components that define the vector that joins A with B:

x-component: 7 - 4 = 3

y-component:  - 1 - (-1) = -1 + 1 = 0

use the tangent function to find the angle \theta:

tan(\theta)=\frac{y-comp}{x-comp}=\frac{0}{3}  = 0\\\theta = 0^o

You might be interested in
Frank exercises no less than 40 minutes per day use t to represent Frank's amount of exercise minutes per day.
BabaBlast [244]

9514 1404 393

Answer:

  t ≥ 40

Step-by-step explanation:

"No less than" is the same as "greater than or equal to".

  t ≥ 40

5 0
3 years ago
PLEASE HELP ME THIS IS DUE IN 30 MIN I WILL MAKE YOU BRAINLIEST ITS 20 POINT
inn [45]

Answer:

you have nicce  pappeeerrrr

Step-by-step explanation:T-T X_X X_X

8 0
2 years ago
Read 2 more answers
The business college computing center wants to determine the proportion of business students who have personal computers (PC's)
Anastasy [175]

Answer:

Option A) reject null hypothesis if z is greater than 1.645

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 250

p = 30% = 0.3

Alpha, α = 0.05

Number of women belonging to union , x = 75

First, we design the null and the alternate hypothesis  

H_{0}: p = 0.3\\H_A: p > 0.3

This is a one-tailed(right) test.

Rejection Region:

z_{critical} \text{ at 0.05 level of significance } = 1.645

So, the rejection region will be

z > 1.64

That is we will reject the null hypothesis if the calculated z-statistic is greater than 1.645

Option A) reject null hypothesis if z is greater than 1.645

6 0
3 years ago
A line that forms and 90° angle with the original line is:
Nikolay [14]

Answer:

a right angle

Step-by-step explanation:

4 0
3 years ago
Please help with math​
m_a_m_a [10]

Answer:

24420.5

Step-by-step explanation:

Multiply all the numbers together to get the length of the cubiod

221*8.5*13= 24420.5

Hope this helped!

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is 789,626,968,486,998 -1
    14·2 answers
  • 10:10 is the same as
    15·1 answer
  • Multiply<br> 7i(5-9i)<br> Please Help!
    14·1 answer
  • Find the surface area of regular prism with height 6 cm, if the base of the prism is a Regular quadrilateral with side 4 cm.
    12·1 answer
  • Sammy's school drama club performed a play. Student tickets cost $2 each, and adult tickets cost $4.50 each. Altogether, they so
    12·1 answer
  • Dicriminant of x² – 49 = 0
    15·1 answer
  • FINDING PERIMETER need help right now<br>​
    9·1 answer
  • Find the approximate height difference between the birdhouse and the tree house. Is it greater than or less than the approximate
    12·1 answer
  • Instructions: Find the surface area of the figure below. Round your answers to the nearest tenth, if necessary.
    13·1 answer
  • Find the equilibrium point for the pair of demand and supply functions. Here q represents the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!