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
allsm [11]
3 years ago
14

If 0 is in the quadrant IV and sin 0=1/2, then cos0___

Mathematics
1 answer:
GuDViN [60]3 years ago
3 0
Negative root 3 over 2
You might be interested in
At a school carnival, three students spend an average of $10. Six other students spend an average of $4. What is the average amo
user100 [1]
$54 (if 10 for each of the 3 students and 4 dollars each of the 6 students) 
$14 if not
6 0
3 years ago
At 2:00 PM a car's speedometer reads 30 mi/h. At 2:20 PM it reads 50 mi/h. Show that at some time between 2:00 and 2:20 the acce
Bad White [126]

Answer:

Let v(t) be the velocity of the car t hours after 2:00 PM. Then \frac{v(1/3)-v(0)}{1/3-0}=\frac{50 \:{\frac{mi}{h} }-30\:{\frac{mi}{h} }}{1/3\:h-0\:h} = 60 \:{\frac{mi}{h^2} }.  By the Mean Value Theorem, there is a number c such that 0 < c with v'(c)=60 \:{\frac{mi}{h^2}}. Since v'(t) is the acceleration at time t, the acceleration c hours after 2:00 PM is exactly 60 \:{\frac{mi}{h^2}}.

Step-by-step explanation:

The Mean Value Theorem says,

Let be a function that satisfies the following hypotheses:

  1. f is continuous on the closed interval [a, b].
  2. f is differentiable on the open interval (a, b).

Then there is a number c in (a, b) such that

f'(c)=\frac{f(b)-f(a)}{b-a}

Note that the Mean Value Theorem doesn’t tell us what c is. It only tells us that there is at least one number c that will satisfy the conclusion of the theorem.

By assumption, the car’s speed is continuous and differentiable everywhere. This means we can apply the Mean Value Theorem.

Let v(t) be the velocity of the car t hours after 2:00 PM. Then v(0 \:h) = 30 \:{\frac{mi}{h} } and v( \frac{1}{3} \:h) = 50 \:{\frac{mi}{h} } (note that 20 minutes is 20/60=1/3 of an hour), so the average rate of change of v on the interval [0 \:h, \frac{1}{3} \:h] is

\frac{v(1/3)-v(0)}{1/3-0}=\frac{50 \:{\frac{mi}{h} }-30\:{\frac{mi}{h} }}{1/3\:h-0\:h} = 60 \:{\frac{mi}{h^2} }

We know that acceleration is the derivative of speed. So, by the Mean Value Theorem, there is a time c in (0 \:h, \frac{1}{3} \:h) at which v'(c)=60 \:{\frac{mi}{h^2}}.

c is a time time between 2:00 and 2:20 at which the acceleration is 60 \:{\frac{mi}{h^2}}.

4 0
3 years ago
A cabbage palmetto has a height of 80 feet. what is the approximate height of the tree in meters?
frutty [35]
1 foot is about 0,3 meters.
If the height of the cabbage palmetto is 80 feet, it should be about 80*0,3 = 24 meters.

So a cabbage palmetto with 80 feet of height is about 24 meters.

Hope this helps! :)
6 0
2 years ago
Hi what is the answer for b please
Ray Of Light [21]

E = 352.50 euro × 1 pound / 1.41 euro = 250.00 pounds

J = 39856 yen × 1 pound / 188 yen = 212.00 pounds

a) Japan is cheaper

b) 250 - 212 = 38 pounds cheaper

7 0
3 years ago
I need assistance if anyone would be so kind.
uysha [10]
He shoots 20 arrows
6 0
2 years ago
Other questions:
  • in a triangle, the measure of the first angle is three times the measure of the second angle. The measure of the third angle is
    5·2 answers
  • Solve the equation <img src="https://tex.z-dn.net/?f=%2812%20x%5E%7B5%7Dy%2B12%20x%5E%7B6%7Dy-3%20y%5E%7B5%7D%20-18x%20y%5E%7B5%
    12·1 answer
  • PLEASE HELP ASAP. GIVING BRAINLIEST
    10·1 answer
  • I'll mark you brainliest for the right answer and 15 POINTS!!!
    13·2 answers
  • if $95 is put in an account that gets 6% and I add $18 per year how much will I have at the end of 11 years?
    6·1 answer
  • Eight more than five times a number is negative 62.
    13·1 answer
  • If a student does not like mounds what is the probability that the student also does not like beach?
    5·1 answer
  • This is 7th grade math just trying to see if I’m doing it right so I need this answer please hurry
    12·1 answer
  • 3 movie tickets cost $48. At this rate, what is the cost of 11 movie tickets PLZ HELP
    10·2 answers
  • A group of friends decides to go to the local bowling alley. They can rent the lane for 1 hour at a cost of $ 20 and the shoes a
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!