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
RideAnS [48]
3 years ago
11

N < –2 or n ≥ 4 graph

Mathematics
1 answer:
Elodia [21]3 years ago
7 0
Make a line graph, plot 0 the go to negative two going to the left open circle and on four going to the roght closed circle
You might be interested in
Use triangle ABC drawn below &amp; only the sides labeled. Find the side of length AB in terms of side a, side b &amp; angle C o
Brrunno [24]

Answer:

AB = \sqrt{a^2 + b^2-2abCos\ C}

Step-by-step explanation:

Given:

The above triangle

Required

Solve for AB in terms of a, b and angle C

Considering right angled triangle BOC where O is the point between b-x and x

From BOC, we have that:

Sin\ C = \frac{h}{a}

Make h the subject:

h = aSin\ C

Also, in BOC (Using Pythagoras)

a^2 = h^2 + x^2

Make x^2 the subject

x^2 = a^2 - h^2

Substitute aSin\ C for h

x^2 = a^2 - h^2 becomes

x^2 = a^2 - (aSin\ C)^2

x^2 = a^2 - a^2Sin^2\ C

Factorize

x^2 = a^2 (1 - Sin^2\ C)

In trigonometry:

Cos^2C = 1-Sin^2C

So, we have that:

x^2 = a^2 Cos^2\ C

Take square roots of both sides

x= aCos\ C

In triangle BOA, applying Pythagoras theorem, we have that:

AB^2 = h^2 + (b-x)^2

Open bracket

AB^2 = h^2 + b^2-2bx+x^2

Substitute x= aCos\ C and h = aSin\ C in AB^2 = h^2 + b^2-2bx+x^2

AB^2 = h^2 + b^2-2bx+x^2

AB^2 = (aSin\ C)^2 + b^2-2b(aCos\ C)+(aCos\ C)^2

Open Bracket

AB^2 = a^2Sin^2\ C + b^2-2abCos\ C+a^2Cos^2\ C

Reorder

AB^2 = a^2Sin^2\ C +a^2Cos^2\ C + b^2-2abCos\ C

Factorize:

AB^2 = a^2(Sin^2\ C +Cos^2\ C) + b^2-2abCos\ C

In trigonometry:

Sin^2C + Cos^2 = 1

So, we have that:

AB^2 = a^2 * 1 + b^2-2abCos\ C

AB^2 = a^2 + b^2-2abCos\ C

Take square roots of both sides

AB = \sqrt{a^2 + b^2-2abCos\ C}

6 0
3 years ago
Evaluating Algebraic Expressions
koban [17]
D + t = total earnings
$3h + t = total earnings
$3h + $22 = total earnings

Fill in h as however many hours she is working.
Example: She worked for 8 hrs and got $22 in tips.
$3(8) + $22 = ?
$24 +$22 = $46
6 0
3 years ago
Conic Sections - Part 1
asambeis [7]

Answer:

Step-by-step explanation:

7 0
2 years ago
PLEASE HELP ASAP!!!!!
irakobra [83]

Answer:

D

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Select the correct answer.
svp [43]

Step-by-step explanation:

option B is correct as,

10 + x = -18

→ x = -18 -10

→ x = -28

<em><u>hope </u></em><em><u>this </u></em><em><u>answer </u></em><em><u>helps </u></em><em><u>you </u></em><em><u>dear.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>take </u></em><em><u>care</u></em><em><u>!</u></em>

3 0
3 years ago
Read 2 more answers
Other questions:
  • Greg has four different colored cards in a box. Yellow, red, blue, and green. He randomly selects one card, records the color, a
    8·1 answer
  • Please help me I really need this for school to get a good grade on my report card ​
    12·2 answers
  • What is the sum of the first five terms of a geometric series with a1 = 6 and r = 1/3?
    5·2 answers
  • What is the height of the platform?
    9·2 answers
  • Origional price 24.50 discount18% sale price?
    8·2 answers
  • The equation of a line of best fit relating the number of cats c at an animal shelter to the number
    11·1 answer
  • Can anyone help please? I’ll mark brainliest!!!
    10·1 answer
  • Sara brought a total of 8 nails at ace hardware. She purchased both 6 penny nails and 10 penny nails. She brought 2 more 6 penny
    6·1 answer
  • Help sweet people of the web​
    13·1 answer
  • Xy3-9xyz2 is my math problem and I need help with the complete breakdown
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!