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
Zinaida [17]
2 years ago
12

CAN SOME ONE ANSWER THIS ILL GIVE ALL MY POINTS AND BRAINLIEST PLEASE

Mathematics
1 answer:
kotegsom [21]2 years ago
5 0

1: KIH because of alternate exterier (or ACF because of verticle angle)

2. x

3. CFG

You might be interested in
The price of a holiday was decreased by 12 percent to 600 . What was the price before the decrease?
Deffense [45]

Price before decrease = x

If price before decrease is 100, then price after decrease = 100- 12 = 88

100:88 = x:600

100/88=x/600

100/88 ×600 = x

681.82 =x

Price before decrease =681.82

5 0
2 years ago
Cos x cos (-x) -sin x sin (-x) = 1. Verify the Identity. Please Show All Steps.
umka21 [38]

Answer:

cos x cos (-x) -sin x sin (-x) = 1 ⇒ proved down

Step-by-step explanation:

* Lets revise the angles in the four quadrants

- If angle x is in the first quadrant, then the equivalent angles to it are

# 180 - x ⇒ second quadrant (sin (180 - x) = sin x , cos (180 - x) = -cos x

  tan (180 - x) = -tan x)

# 180 + x ⇒ third quadrant (sin (180 - x) = -sin x , cos (180 - x) = -cos x

  tan (180 - x) = tan x)

# 360 - x ⇒ fourth quadrant (sin (180 - x) = -sin x , cos (180 - x) = cos x

  tan (180 - x) = -tan x)

# -x ⇒fourth quadrant (sin (- x) = -sin x , cos (- x) = cos x

  tan (- x) = -tan x)

* Lets solve the problem

∵ L. H .S is ⇒ cos x cos (-x) - sin (x) sin (-x)

- From the rules above cos x = cos(-x)

∴ cos x cos (-x) = cos x cos x

∴ cos x cos (-x) = cos² x

- From the rule above sin (-x) = - sin x

∴ sin x sin (-x) = sin x [- sin x]

∴ sin x sin (-x) = - sin² x

∴ cos x cos (-x) - sin (x) sin (-x) = cos² x - (- sin² x)

∴ cos x cos (-x) - sin (x) sin (-x) = cos² x + sin² x

∵ cos² x + sin² x = 1

∴ R.H.S = 1

∴ L.H.S = R.H.S

∴ cos x cos (-x) -sin x sin (-x) = 1

8 0
2 years ago
If f(x)=x2-25and g(x)=x-5 ,what is the domain of (f/g)(x)?
djyliett [7]

Answer:

Find the domain.

Interval Notation:

(−∞,5)∪(5,∞)

Set-Builder Notation:

{x|x≠5}

3 0
3 years ago
Evaluate the algebraic expression 6x-2 when<br> X=5/6
Neko [114]

Answer:

3

Step-by-step explanation:

Substitute x = \frac{5}{6} into the expression

6x - 2

= 6 × \frac{5}{6} - 2

= 5 - 2

= 3

4 0
3 years ago
A motorboat traveling with a current can go 120 km in 4 hours. Against the current, it takes 6 hours to go the same distance. Fi
Aleks04 [339]

Answer: Speed of motorboat= 25 km hr

Speed of current= 5km hr

Step-by-step explanation:

120/4=  speed of motorboat with the  current

120/6= speed of motorboat against the current

Get the average of those 2 numbers.

Motorboat=25 km hr

Speed of current= 5 km hr

8 0
3 years ago
Other questions:
  • you’re having dinner at a restaurant that serves 5 kinds of pasta (spaghetti, bow ties, fettuccine, ravioli, and macaroni) in 4
    11·1 answer
  • Peter is making an "X marks the spot" flag for a treasure hunt. The flag is made of a square white flag with sides of 12 inches.
    14·1 answer
  • Write a number that round to 20,000 when it is rounded to the nearest ten thousand
    11·1 answer
  • Simplify the following expression 7 y + 2x - 10 y + 3 x^2 -10x​
    15·2 answers
  • Is 7/10 or 11/20 greater than less than or equal too
    6·2 answers
  • If you are facing east and you turn 90 degrees to your right in what direction are you now facing
    13·1 answer
  • Write in simplest form: 8t2/(36t) = _____
    11·1 answer
  • Mrs. White opened a bank account that earns 1.2% interest each year. If she deposited 1,500 dollars how much will she have after
    10·1 answer
  • FREE5POINTS+THANKS+GOTTA ANSWER A SIMPLE QUESTION. What's your zodiac sign? owo
    10·2 answers
  • How much time will it take for an amount of Rs900 to yield Rs81 as interest at 4.5% per annum of simple interest
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!