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
Fed [463]
3 years ago
12

Angle relationships worksheet #2

Mathematics
1 answer:
Marianna [84]3 years ago
4 0

Answer:

A) 22

B)125

C)55

Step-by-step explanation:

Linear pair=180

2x+11+6x-7=180

8x+11-7=180

8x+4=180

8x=176

x=22

You might be interested in
Marisol is preparing a care package to send to her brother. The package will include a board game that weighs 4 lb and several 1
masya89 [10]
Let x be the number of snack packs, then
4 + 14x < 25
14x < 25 - 4
14x < 21
x < 21/14
x < 1.33


5 0
3 years ago
Divided 1/4 ÷ 8 by a whole numbet​
OlgaM077 [116]
The question was worded weird but if it’s asking for 1/4 divided by 8 then the answer is 2
6 0
3 years ago
A rectangle has a height of 2x4 and a width of x2 + 8x + 15.
aliina [53]

Answer:

2x⁶ + 16x⁵ + 30x⁴

Step-by-step explanation:

7 0
3 years ago
If f(x)=x^2 what is g(x)<br> A. g(x)=1/9x^2<br> B. g(x)=(1/3x)^2<br> C. g(x)=3x^2<br> D. g(x)=1/3x^2
Pavlova-9 [17]

Answer:

the answer is B

Step-by-step explanation:

3 0
3 years ago
Please help me for the love of God if i fail I have to repeat the class
Elena-2011 [213]

\theta is in quadrant I, so \cos\theta>0.

x is in quadrant II, so \sin x>0.

Recall that for any angle \alpha,

\sin^2\alpha+\cos^2\alpha=1

Then with the conditions determined above, we get

\cos\theta=\sqrt{1-\left(\dfrac45\right)^2}=\dfrac35

and

\sin x=\sqrt{1-\left(-\dfrac5{13}\right)^2}=\dfrac{12}{13}

Now recall the compound angle formulas:

\sin(\alpha\pm\beta)=\sin\alpha\cos\beta\pm\cos\alpha\sin\beta

\cos(\alpha\pm\beta)=\cos\alpha\cos\beta\mp\sin\alpha\sin\beta

\sin2\alpha=2\sin\alpha\cos\alpha

\cos2\alpha=\cos^2\alpha-\sin^2\alpha

as well as the definition of tangent:

\tan\alpha=\dfrac{\sin\alpha}{\cos\alpha}

Then

1. \sin(\theta+x)=\sin\theta\cos x+\cos\theta\sin x=\dfrac{16}{65}

2. \cos(\theta-x)=\cos\theta\cos x+\sin\theta\sin x=\dfrac{33}{65}

3. \tan(\theta+x)=\dfrac{\sin(\theta+x)}{\cos(\theta+x)}=-\dfrac{16}{63}

4. \sin2\theta=2\sin\theta\cos\theta=\dfrac{24}{25}

5. \cos2x=\cos^2x-\sin^2x=-\dfrac{119}{169}

6. \tan2\theta=\dfrac{\sin2\theta}{\cos2\theta}=-\dfrac{24}7

7. A bit more work required here. Recall the half-angle identities:

\cos^2\dfrac\alpha2=\dfrac{1+\cos\alpha}2

\sin^2\dfrac\alpha2=\dfrac{1-\cos\alpha}2

\implies\tan^2\dfrac\alpha2=\dfrac{1-\cos\alpha}{1+\cos\alpha}

Because x is in quadrant II, we know that \dfrac x2 is in quadrant I. Specifically, we know \dfrac\pi2, so \dfrac\pi4. In this quadrant, we have \tan\dfrac x2>0, so

\tan\dfrac x2=\sqrt{\dfrac{1-\cos x}{1+\cos x}}=\dfrac32

8. \sin3\theta=\sin(\theta+2\theta)=\dfrac{44}{125}

6 0
3 years ago
Other questions:
  • Hi:) I tried using the sine rule but I couldn’t get the ans :( anyone able to help? Thank you:)!!
    7·1 answer
  • What does it mean that a sample is representative of the population?
    9·1 answer
  • Find the range 4.7 6.3 5.4 3.2 4.9
    12·1 answer
  • The sum of the measures of the angles shown is 90°.
    7·1 answer
  • Plz lzplz plz plz plz help me plz ASAP
    7·1 answer
  • Can someone help, marking Brainly ! Thank you if you do help .
    10·1 answer
  • Find the value of x for which (4/5)-4 x (4/5)-7 =(4/5)2x-1 Can some1 say this ans fast plz
    8·1 answer
  • Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.
    12·2 answers
  • Find the equation of the line: parallel to 3x - y = 11 through (-2,0)
    13·2 answers
  • Shane bought a pair of jeans on sale for 40% off the original price. After he used a $20 gift card, his total was $9.64. The ori
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!