All categories

3 years ago

Solve the system of equations y=5x y=x^2+4 answer:(1,5) and (4, 20)

Mathematics

1 answer:

aksik [14]3 years ago

6 0

The answer is (1,5) and (4,20) they make both of the equations true

You might be interested in

Find an equation of the circle that satisfies the given conditions. (Use the variables x and y.)

prohojiy [21]

Answer:

$x^2 + y^2 = 52$

Step-by-step explanation:

Distance between two points:

Suppose that we have two points, $(x_1,y_1)$ and $(x_2,y_2)$ . The distance between them is given by:

$D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Equation of a circle:

The equation of a circle with center $(x_0,y_0)$ and radius r has the following format:

$(x - x_0)^2 + (y - y_0)^2 = r^2$

Center at the origin;

This means that $x_0 = 0, y_0 = 0$

$(x - x_0)^2 + (y - y_0)^2 = r^2$

$(x - 0)^2 + (y - 0)^2 = r^2$

$x^2 + y^2 = r^2$

Passes through (4, 6)

The radius is the distance from this point to the center. So

$r = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$r = \sqrt{(4-0)^2+(6-0)^2}$

$r = \sqrt{16+36}$

$r = \sqrt{52}$

$r^2 = 52$

Then

$x^2 + y^2 = r^2$

$x^2 + y^2 = 52$

8 0

3 years ago

Fir a walk-a-thon a sponsor to give a flat tree of 5$ plus 2$ for every mile m you walk

nikklg [1K]

Not really sure what you’re wanting here. If you need the formula it is 2 times the number of miles + 5 (2n+5)

8 0

3 years ago

Question Progress

VLD [36.1K]

Answer:

the answer is a

Step-by-step explanation:

i took the test

7 0

3 years ago

Anyone want to help me? 20 points!

gulaghasi [49]

Answer:

Bottom one

-8<-4

Step-by-step explanation:

You might want to put less points

3 0

3 years ago

Read 2 more answers

Mary month earnings can be given as R(x)=13x+155 where x equals the number of hours worked josies monthly are given as Q(x)=9x+3

tatuchka [14]

Answer:

45hours

Step-by-step explanation:

Given

Mary month earnings to be R(x)=13x+155

Josies monthly earning is given as Q(x)=9x+335

If Josie and Mary work to earn the same salary, then R(x) = Q(x)

13x+155 = 9x+335

subtract 155 from both sides

13x+155-155 = 9x+335-155

13x = 9x+180

subtract 9x from both sides

13x-9x = 9x+180-9x

4x = 180

x = 180/4

x = 45

Since x equals the number of hours worked by Josie and Mary, this means that Josie and Mary must work for 45hours to earn the same salary

6 0

3 years ago