Solve the following system of equations algebraically:
x2 + y2 = 20
2y = x

Answers

Answer 1

Answer:

x = 5

Step-by-step explanation:

x2 + y2 = 20

xy = 20 ÷ 2 ÷2

= 10 ÷ 2

x = 5

i dont know whether this is right

but hope it helps n it works


Related Questions

If g(x) = f(4x), which statement is true?

Answers

Answer:

I believe its the last answer.

Step-by-step explanation:

One bar of candy A and two bars of candy B have 777 calories. Two bars of candy A and one bar of candy B contain 783 calories. Find the caloric content of each candy bar.

Answers

Answer:

A has 263 calories

B has 257 calories

Step-by-step explanation:

system of equations:

a + 2b = 777

2a + b = 783

I multiplied the first equation by -2 to eliminate the 'a' terms

  -2a - 4b = -1554

+ 2a  + b =    783

         -3b = -771

b = 257

solve for 'a'

a + 2(257) = 777

a + 514 = 777

a = 263


Tennis practice last for 1 hour and 35 minutes

Answers

Answer:

Where's the rest of this question??

If a randomly thrown dart hits the board below,
what is the probability it will hit the shaded region?
B
1
3
D
con
4.

Answers

Answer:

Step-by-step explanation:

Solve using substitution

x-y= 6
4x+2y=36

Answers

X=6+y
4(6+y) +2y=36
24+6y=36
6y=12
Y=2
X=8

What is 58.2 x 33.9 = ?​

Answers

Answer:

Fraction: 1972 and 49/50

Decimal: 1972.98

Step-by-step explanation:

FIND THE AREA (LEAVE EXPLANATION)

Answers

Answer:

40

Step-by-step explanation:

solve for two squares. Square 1: 32. Square 2: 8. answer: 32 + 8

A tool box has the dimensions of 9 in by 3 in by 6 in. If Rick plans to double all three dimensions to build a larger tool box, he believes he would double the volume of the tool box. Is he correct?

Answers

Answer:

No; it will not double the volume of the box

Step-by-step explanation:

What is the total surface area of the rectangular prism?

Answers

Answer:

286.5

Step-by-step explanation:

(3 x 7.5) x 2 = 45

(11.5 x 3) x 2 = 69

(11.5 x 7.5) x 2 = 172.5

45 + 69 + 172.5 = 286.5

What is the slope of a line perpendicular to the line whose equation is x+3y=-12

Answers

Answer: 3

Step-by-step explanation:

Find slope of that line which is -1/3x-4

then flip its sign and the equation to get 3

Order the angles in each triangle from smallest to largest.

Answers

9514 1404 393

Answer:

  B: L, M, N

Step-by-step explanation:

The sides are listed from shortest to longest. The angles opposite these sides will be in order smallest to largest. The name of the opposite angle is the vertex whose name is missing from the side's name.

MN is opposite angle L, the smallest

LN is opposite angle M, the middle-size

LM is opposite angle N, the largest.

Smallest to largest, the angles are ∠L, ∠M, ∠N.

3/2 p - 14 = p + 13
Please help

Answers

Answer:

p=54 hope this helps

Step-by-step explanation:

Help with math!?!

Please only answer if you know the answer, the comment section is right below. Please don't waste my points!

Also, please show all of your work, you are trying to help me better understand the concept, not just give me the answer.

The image is down below. Show work! Thanks!

Answers

Answer:

x = 7√3, y = 14x = √3, y = 3

Step-by-step explanation:

Use the property of 30-60-90 degree right triangles

They have the ratio of  sides from smallest to greatest: 1: √3 : 2

The top triangle

y = 2*7 = 14x = 7√3

The bottom triangle

Acute angles n and 2n makes them 30° and 60°

x = 1/2*2√3 = √3y = √3*√3 = 3

Answer:

x = 1/2*2√3 = √3

y = √3*√3 = 3

Please help me pleasere

Answers

Answer:

7

Step-by-step explanation:


How many angles do 5 triangles and 3 rectangles have?
(1) 7
(2) 17
(3)
18
(4) 27

Answers

Answer:

27

Explanation:

5 * 3 = 15 (5 triangles with 3 angles each)

3 * 4 = 12 (3 rectangles with 4 angles each)

15 + 12 = 27

Answer:

the answer is 27 because a triangle has 3 sides so multiply 3 tomes 5 because of how many triandles and then the same with the rectangle that has 4 sides then multiply by 3 because of the number of triangles you have

What is the measure of each interior angle of Regular Polygon?

Answers

Answer:

A regular polygon is a flat shape whose sides are all equal and whose angles are all equal. The formula for finding the sum of the measure of the interior angles is (n - 2) * 180. To find the measure of one interior angle, we take that formula and divide by the number of sides n: (n - 2) * 180 / n.

Step-by-step explanation:

140

Each interior angle of regular polygon of n sides is given by  

n

180(n−2)

 degree

∴ each interior angle =

9

180(9−2)

degree

=20×7

=140

For the function f(x) = 3x
Find f(4)

Answers

f(4)=3(4)
f(4)=12

Hope this helps :)

Answer:

F(4) = 3*4 = 12

Step-by-step explanation:

cual seria 1/10 de $360 pesos​

Answers

Answer:36 pesos porque 1/10 de 360 es como multiplicar 1/10 por 360

Step-by-step explanation:

A function is shown below.

g(x)=19.60+1.74x

What is the value of g(30)?

Answers

Answer:

g(30) = 71.8

Step-by-step explanation:

g(30) = 19.6 + 1.74(30)

The value of the g(30) is 71.8 if the function is g(x) = 19.60 + 1.74x

What is a function?

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have a function:

g(x)=19.60+1.74x

Plug x = 30

g(30) = 19.60+1.74(30)

g(30) = 19.60 + 52.2

g(30) = 71.8

Thus, the value of the g(30) is 71.8 if the function is g(x) = 19.60 + 1.74x

Learn more about the function here:

brainly.com/question/5245372

#SPJ2

please help me i only have 30 mins to an hour to finish

Answers

Answer:

D. 105 students

Step-by-step explantation: 11+10+21+6+2=50. So, 21 times 250 is 5250 and divided by 50 is 105.

Hey!

Please only answer if you know the answer, the comment section is right below. Please don't waste my points!

Also, please show all of your work, you are trying to help me better understand the concept, not just give me the answer.

The image is down below. Show work! Thanks!

Answers

Answer:

4744  ft

Step-by-step explanation:

Consider the angle of depression is same as the angle between horizontal line on the ground and the direct line from the plane to the airport (alternate interior angles).

Use tangent to find the missing length.

tan = opposite / adjacent

tan 34° = 3200 / xx = 3200 / tan 34°x = 4744

The distance is 4744  ft

the ratio of lampreys to oarfish in the marine aquarium was 27:22 if there were 162 lampreys in the aquarium how many oarfish were there

Answers

Answer:

132

Step-by-step explanation:

First divide the number of lampreys by the ratio.

162/27=6

Then multiply the result (6) by the oarfish part of the ratio

22*6=132

can u please help me​

Answers

I kfksnsjsjsjennwmdkcicubwbdnd

What is the solution to this equation 4x=124

Answers

Answer:

31

Step-by-step explanation:

divide 124 by 4

x=124

Answer:

x=31

Step-by-step explanation:

Divide both sides of the equation by the same term

4x/4 = 124/4

Then you have to divide the numbers.

x= 124/4

x= 31

Daniel started a video game with 30 tokens. He earned 8 more tokens 0/10
for jumping on a star, but lost 6 tokens for falling into a hole. When he
passed a checkpoint, his number of tokens doubled! Then he spent20
tokens to buy a flashlight. Which expression shows how many tokens he
has left?

2x(30+8-6-20)

2x(30+8)-(20-6)

2x30+8-6-20

2x(30+8-6)-20

Answers

Answer:

2x(30+8-6)-20

Step-by-step explanation:

if 4=p (p+5)=21 find p​

Answers

Answer:

p=16?

16+5=21?

Step-by-step explanation:

16+5=21

please help me out with this​

Answers

Answer:

1) Since 4(5+x) is 4*5+4*x, and because 4*5+4*x is

Tutoring ABC charges $50 sign up fee plus $12 an hour . HW helps charge a $38 sign up fee plus $15 an hour . After how many hours will the total for each company be the same​

Answers

Answer:

Step-by-step explanation:

Tutoring ABC - $50 sign up and $12 an hour

HW helps- $38 sign up and $15 an hour

 50                                    38

+12                                    +15

62                                     53

+12                                   +15

74                                     68                        Four months

+12                                  + 15

86                                     83

+12                                   +15

98                                    98

One year, the population of a city was 330,000. Several years later
it was 270,600. Find the percent decrease.

Answers

Answer:

18% Decrease.

Step-by-step explanation:

You can use this formula for % decrease questions. :)

Decrease= Starting value (original) - Final Value (the smaller number) / starting value x 100.

Hope this helps,

Azumayay

Beth has saved 60$ for a gaming system.This is 30% of the total amount she needs for gaming system.how much does the new gaming system cost?

Answers

Answer:

$200

Step-by-step explanation:

30% = $60

divide both sides of the equation by 3:

10% = $20

multiply both sides by 10:

100% = $200

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