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
ki77a [65]
3 years ago
9

Using the right triangle below, find the cosine of angle A.

Mathematics
1 answer:
Inessa05 [86]3 years ago
4 0

Answer:

36.87 degrees    

Step-by-step explanation:

Cos A = <u>adjacent</u>

             hypothenus    

Cos A = 8/10

Cos A = 0.8

angle A= 36.87 degrees        

You might be interested in
Help I’ll mark you brainly!
Gnesinka [82]
Pls mark brainleist

7 0
3 years ago
Jeff is purchasing a car for $29,175 that will depreciate in value 7.5% each year.
beks73 [17]

Answer:

Step-by-step explanation:

figure that S*** out your self jeez

5 0
3 years ago
10) On Tuesday Imani bought eight hats. On
SashulF [63]
34 I hope this helped!
6 0
2 years ago
A fair-sided coin is tossed 18 times.
Lady bird [3.3K]
Most likely to be letter C
5 0
2 years ago
3x^2+kx=-3 What is the value of K will result in exactly one solution to the equation?
Scorpion4ik [409]

Answer:

For k = 6 or k = -6, the equation will have exactly one solution.

Step-by-step explanation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = (x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

If \bigtriangleup = 0, the equation has only one solution.

In this problem, we have that:

3x^{2} + kx + 3 = 0

So

a = 3, b = k, c = 3

\bigtriangleup = b^{2} - 4ac

\bigtriangleup = k^{2} - 4*3*3

\bigtriangleup = k^{2} - 36

We will only have one solution if \bigtriangleup = 0. So

\bigtriangleup = 0

k^{2} - 36 = 0

k^{2} = 36

k = \pm \sqrt{36}

k = \pm 6

For k = 6 or k = -6, the equation will have exactly one solution.

3 0
2 years ago
Other questions:
  • Simplify. 4a(6) + 3a
    9·2 answers
  • Let f(x)=5x^2-4x and g(x)=5x+1. Find f-g
    12·1 answer
  • PL has endpoints P(4, −6) and L(−2, 1).
    8·2 answers
  • Which step shows the result of applying the subtraction property of equality?
    9·1 answer
  • I need help with this question.
    15·2 answers
  • Joe charges 5 dollar to wash each floor, How many floors does joe need to wash to make at least $32?
    11·2 answers
  • I'm giving away some points​
    6·1 answer
  • Margo is practicing her free throws for basketball
    13·1 answer
  • What is the circumference of a circle with a diameter of 5 feet use 3.14 for pi
    15·1 answer
  • Find the measure of angle QPR.<br> Given<br> m m m Find m
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!