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
Andre45 [30]
3 years ago
11

Given: cos(2x)=-1/9 Angle x is in quadrant I. Find: cos(x)

Mathematics
1 answer:
sergey [27]3 years ago
5 0
My opinion about this answer is 7
You might be interested in
Which is the more reasonable measurement of the distance between the tracks on a railroad:
nataly862011 [7]

If you're comparing 1.435 * 10^(-3) mm to 1.435 * 10^3 mm, then the more reasonable measurement is 1.435 * 10^3 mm since,

1.435 * 10^3 mm = 1435 mm = 1.435 meters

1 meter is about 3.28 feet approximately

So 1.435 meters is slightly larger (about 4.708 feet) which is a fairly reasonable distance between the tracks on a railroad.

-------------------

Something like 1.435 * 10^(-3) mm is equal to 0.001435 mm, which is far less than 1 mm.

6 0
2 years ago
Convert 7 pounds 3 ounces to kilograms.
Cerrena [4.2K]

Answer:

3.3

Step-by-step explanation:

7lb 3oz

3oz/16oz=.1875lb

7lb+.1875lb=7.1875lb

7.1875lb/2.2kg=3.27kg

8 0
2 years ago
Mary spent half of her allowance going to the movies. She washed the family car and earned seven dollars. What is her weekly all
Nata [24]

Answer:If Mary spent half of her allowance the equation will begin with 1/2x or 0.5x where x is her allowance and 0.5 is half of her allowance spent. Mary also earned 7 dollars by washing the car so this will be added to her allowance spent.

The problem says that after Mary has spent half of her allowance at the movies she was left with 18 dollars so that means that the equation must be equal to 18.

The equation you want to set up is

0.5x+7=18

Where, 18-7=11

0.5x=11

11/.5 = x

x = $22

Thus, Mary has a weekly allowance of 22 dollars.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Factor the expression <br> 5x^2 -22x -15
Murljashka [212]
5x^2-22x-15=5x^2\underbrace{-25x+3x}_{-22x}-15\\\\=(5x^2-25x)+(3x-15)=5x(x-5)+3(x-5)\\\\=\boxed{(x-5)(5x+3)}

3 0
3 years ago
In the equation below, what is the coefficient of the variable?
qaws [65]
B

but i have to write more to let me post this so here it is




7 0
3 years ago
Other questions:
  • We draw a random sample of size 25 from a normal population with variance 2.4. If the sample mean is 12.5, what is a 99% confide
    9·1 answer
  • What is the volume of a cube with one and a half inch sides
    11·1 answer
  • Which expression is the lcd of these fractions? 9/m^4 and 1/2
    5·1 answer
  • Can someone help me out?
    10·1 answer
  • Firewood is often sold by the cord. A cord of wood is a bundle measuring 4 feet by 4 feet by 8 feet. What is the volume of a cor
    12·2 answers
  • Estimate the quotient. 6 2/5 ÷ 2 6/7 ? A) 2 B) 4 C) 5 D) 3 and please explain it . ty
    9·1 answer
  • PLEASE HELP ASAP!!
    13·2 answers
  • Please help me with these questions please I need help? I'm confused with these questions can somebody explain me please.
    12·1 answer
  • PLEASE HELP MEH WIT DA QUESTION:
    12·2 answers
  • Explain the parts of an angle
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!