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
zhenek [66]
3 years ago
9

X^2 + y^2 = 8 X-y=0 Select all of the following that are solutions to the system shown

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0

X^2 + y^2 = 8
X-y=0 so x = y

replace x = y into X^2 + y^2 = 8

y^2 + y^2 = 8

2y^2 = 8

y^2 = 8/2

y^2 = 4

y = - 2 and y = 2

because x = y

so x = - 2 and x = 2

solutions:

x= - 2 and x = + 2

y= - 2 and y = + 2

You might be interested in
Sugar was traditionally produced and sold as sugarloaves, which are cones of sugar wrapped in paper. Find the total surface area
Zolol [24]

Answer:

A = 326,73 cm²

Step-by-step explanation:

The area of a circular cone is area of the base (A₁ ) plus area lateral ( area of a circular sector of radius the slant height )

Then we proceed to calculate the area of the base A₁

diameter of circular base is 8 cm then the radius is 4 cm and the area is:

A₁ = π*r²  =  3,14* (4)²

A₁ = 3,1416*16   =  50,2656 cm²

Now Lateral area of the cone (A₂) is equal to the area of a circular sector with radius the slant height. We will calculate it, taken into account that this circular sector is part of a circle of radius the slant height.

Between the area of circular sector with radius the slant height and the area of the circle with the same radius there is a linear relation. That is we can calculate area of a circular sector by rule of three as follows:

The length of the circular sector is the length of the circle of the base of the cone, that is:

L = 2*π*(4)

L = 2*3,1416*4

L = 25,1328 cm

Then we have a circular sector of length 25,1328 cm

The area of the circle of radius 22 cm is:

A(c)  = π*(22)²     ⇒   A(c)  = 1520,5344 cm²

And the length of this circle is:

L(c)  =  2*π*(22)     ⇒   138,2304 cm

Then we apply a rule of three

For a length of      138,2304 cm  ⇒⇒⇒  (area)  1520,5344 cm²

Then for a length of  25,1328 cm   ⇒⇒⇒(area)   A₂ (??)

Therefore:

A₂ =  (25,1328)*1520,5344)/ 138,2304

A₂ = 276,4608 cm²

Then total area of the cone is:

A = A₁  +  A₂

A =  50,2656  +276,4608

A  = 326,7264 cm²

Round answer  A = 326,73 cm²

8 0
3 years ago
Read 2 more answers
A pair of pants with a marked price of $35.00 has a discount of 20%. How much is the discount
Degger [83]

Twenty percent of $35 is 0.20($35) = $7. The discount is $7.

7 0
3 years ago
Read 2 more answers
A health inspector wants to check compliance with a new city ordinance on meat storage. Since he can only inspect 10 of the 33 s
cestrela7 [59]
The answer is B)0.4 because four of the ten stores that were surveyed were compliant so the proportion of the entire population of stores that would be compliant is <span>410</span> or 0.4<span> </span>
3 0
3 years ago
6.
user100 [1]

Answer:

A. y = –5x – 27

Step-by-step explanation:

Find the slope of the original line and use the point-slope formula  y − y 1 = m ( x − x 1 )  to find the line parallel to  y = − 5 x + 3 .

y = − 5 x − 27                           PARALLEL

...................................................................................................................................................

Find the negative reciprocal of the slope of the original line and use the point-slope formula  y − y 1 = m ( x − x 1 )  to find the line perpendicular to  y = − 5 x + 3 .

y = 1 /5 x + 21 /5                    PERPENDICULAR

7 0
2 years ago
Easy! please help! <br><br> 17% is equivalent to? A. 17/100, B. 17 to 100 C. 17:100
nika2105 [10]
The answer is a obviously
3 0
3 years ago
Read 2 more answers
Other questions:
  • I think its 2, 150 but just making sure.
    13·1 answer
  • Find the area of the composite figure below
    6·1 answer
  • For the following conditional, identify the converse and the truth value of the converse:
    13·2 answers
  • Gabrielle and John each
    7·1 answer
  • Given a right triangle whose are is 12 cm2. The height of the hypotenuse is 1.2 cm. What is the length of the hypotenuse?
    14·1 answer
  • The amount of leather needed for a basketball is 7328 3 cm ^ 2 Determine the diameter of the ball .
    10·1 answer
  • 8 more questions until I’m done
    12·2 answers
  • Find the product of 5×8000=5× blank thousands = thousands
    6·1 answer
  • Which system of equations is represented by the graph?
    7·2 answers
  • Given f(x)=x-7 and g(x)=x^2<br> Find g(f(-1)) <br> Find f(g(-1))<br> With explanation
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!