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
nasty-shy [4]
3 years ago
14

Find the exact value of COS 300°

Mathematics
1 answer:
pav-90 [236]3 years ago
7 0

Answer:

cos 300° = cos 60° = 0.5

You might be interested in
Suppose 15% of $x$ equals 20% of $y$. What percentage of $x$ is $y$ ?
viktelen [127]

Answer:

Step-by-step explanation:

4 0
2 years ago
A ball is thrown vertically upward from the top of a building 160 feet tall with an initial velocity of 48 feet per second. The
alina1380 [7]

Answer:

# after 5 seconds, the ball strikes the ground

# The ball reaches maximum height at t = 1.5 seconds

# The max height is 196 feet

Step-by-step explanation:

The equation is:

d(t)=-16t^2+48t+160

t is the time

d(t) is the distance traveled

Initial height is 160 feet and initial velocity is 48 ft/sec

If we want to find the time it takes the ball to hit the ground, we let d(t) equal to 0 and find t. Shown below:

-16t^2+48t+160=0\\t^2-3t-10=0\\(t-5)(t+2)=0\\t=5,-2

We disregard t = -2 since time can't be negative. We take t = 5

Thus, after 5 seconds, the ball strikes the ground.

The equation is a quadratic of the form: ax^2+bx+c

Matching equations, we can say:

a = -16

b = 48

c = 160

The time when ball reaches max height is given as:

t=-\frac{b}{2a}

Substituting, we find:

t=-\frac{b}{2a}\\t=-\frac{48}{2(-16)}\\t=1.5

The ball reaches maximum height at t = 1.5 seconds

The max height can be found by putting t = 1.5 into the original equation. Shown below:

d(t)=-16t^2+48t+160\\d(1.5)=-16(1.5)^2+48(1.5)+160\\=196

The max height is 196 feet

8 0
3 years ago
Simplify math please help ​
jok3333 [9.3K]
Obviously it’s not a answer without x in the numerator so A is not the answer and your not multiplying or adding so your answer is C
4 0
2 years ago
One angle of a triangle measures 124°. The other two angles are congruent. Enter and solve an equation to find the measure x of
natulia [17]

Answer:

28°

Step-by-step explanation:

You have to subtract 120° by 180° so 180-120 =56°

congruent means that the two angels equal the same. to get the answer you divide 56° by 2 which will give you 28°

7 0
3 years ago
Which one is the steepest <br> A. 1/2 <br> B. 0<br> C. 3/4 <br> D. 5
Oksanka [162]

Answer:

3/4

Step-by-step explanation:

Remember: rise/run, where rise is the vertical line and run is the horizontal. To calculate for 5, the rise must be 5x the run (e.g. 25/5). 0 is a horizontal line, since it has no y-axis. Then draw all your lines on a graph. The steepest slope will be 3/4.

4 0
2 years ago
Read 2 more answers
Other questions:
  • the width of a rectangle is three more than half the length. its perimeter is 78 centimeters, find the length and width
    12·1 answer
  • 6th grade math help this is usually easy for people !
    11·1 answer
  • Can someone tell me the right answer plss and thank you
    5·1 answer
  • 1/4(8x-4)=<br> need help please answer
    13·1 answer
  • Find the inequality represented by the graph​
    13·1 answer
  • In the diagram below, we have ST parallel to QR. angle P= 40 degrees, and angle Q= 35 degrees. Find the measure of angles STR in
    11·2 answers
  • What is the diameter of this circle? A) 2 cm B) 3.14 cm C) 4 cm D) 8 cm
    10·1 answer
  • A tennis court is surrounded by a fence so that the distance from each boundary of
    11·1 answer
  • Help! What is the area of each shape?
    13·2 answers
  • A triangle has an area of 12 cm² and a height of 12 cm what is the base of the triangle
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!