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
guajiro [1.7K]
2 years ago
5

Find the value of x and y​

Mathematics
1 answer:
Svetllana [295]2 years ago
4 0

Answer:

x = 1

y = -3

Step-by-step explanation:

cos(pi) = -1

so many ways :

sqrt(0.5/2) = sqrt(0.5/2 × 8/8) = sqrt(4/16)

= sqrt(0.5/2 × 18/18) = sqrt(9/36)

= sqrt(1/4) = 1/2

"nicest" approach (all integers) :

3x² = sqrt(9)

3x² = 3

x² = 3/3 = 1

x = 1

2y = sqrt(36)

2y = 6

y = 6/2 = 3

one of them has to be negative (because cos(pi) = -1), so it has to be y, because 3x² cannot be negative with real numbers.

so, y = -3

-1 × 3×1²/(2×-3) = sqrt(0.5/2) = 1/2

-1 × 3/-6 = 1/2

3/6 = 1/2

1/2 = 1/2

correct

You might be interested in
Help Please!!!!!!!!!!
LenKa [72]

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

x+3y\leq 6

Isolate the variable y

3y\leq 6-x

y\leq 2-(1/3)x

The solution is the shaded area below the solid line

Is below because the symbol of the inequality is less

Is a solid line because the line is included in the solution

The equation of the solid line is y=2-(1/3)x

To graph the solution find the intercepts

Find the x-intercept (value of x when the value of y is equal to zero)

For y=0, x=6 --------> point (6,0)

Find the y-intercept (value of y when the value of x is equal to zero)

For x=0, y=2 -------> point (0,2)

Graph the inequality

see the attached figure

5 0
3 years ago
Which linear inequality is represented by the graph?
Zina [86]

Answer:

c

Step-by-step explanation:

not 100% but if you go across 1 and up 2 you get to tje line

8 0
3 years ago
Identify three of the key messages used by advertisers when promoting their products.
Dmitry_Shevchenko [17]

Answer:

Three key messages often used are: 1. "Everyone is doing it"; 2. "It's fun to use our products"; 3. "You will be successful if you use our products."

Step-by-step explanation:

hope it helps

4 0
3 years ago
Read 2 more answers
Heather finally narrowed her clothing choices for the big party down to three skirts, two tops and four pies of shoes. How many
Zigmanuir [339]
<h3>Answer: 24</h3>

To get this answer, we multiply the values given to us

3*2*4 = 6*4 = 24

So that's why there are 24 different outfits possible.

6 0
3 years ago
What is 67+9,000???? <br>a. 67,679<br>b. 9,067<br>c. 67,980
Mashutka [201]
The answers is B. 9,067
7 0
3 years ago
Read 2 more answers
Other questions:
  • A 2010 study asserts that the number of hours that the average college student studies each week has been steadily dropping (The
    12·1 answer
  • Estimate 543-358 then find the difference
    12·1 answer
  • In 2004 the population in Morganton, Georgia, was 43,000. The population in Morganton doubled by 2010. If the growth rate remain
    7·1 answer
  • Pls answer this fast
    14·1 answer
  • Factor the following expression using the greatest common factor then find the solution
    10·1 answer
  • The sixth-grade class is competing in the school field day. There are 32 girls and 24 boys who want to participate. Each team mu
    6·1 answer
  • Use the commutative property to identify which expression is equal to (3+4) x9
    13·1 answer
  • How many rectangles are in the photo
    9·2 answers
  • What is the value of areas of triangles if height is 12 m and base is 6m ?​
    10·1 answer
  • Find the maximum and minimum values of the curve y=2x³-3x²-12x+10​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!