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3 years ago

If y=18 when x=6, find x when y=6.

Mathematics

2 answers:

alukav5142 [94]3 years ago

4 0

X=2
!!!!!!!!!!!!!!!!!!!!

andrew11 [14]3 years ago

4 0

If y=18 when x=6, I believe that x=2 when y=6.

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Three friends attended a carnival. John rode the rollercoaster twice, the bumper cars three times, and the Ferris wheel once. He

Paha777 [63]

Answer:

The system of equations is the option A

Step-by-step explanation:

Let

x ------> the number of tickets for the roller-coaster

y ------> the number of tickets for the bumper

z ------> the number of tickets for the Ferris wheel

we know that

The system of equations is equal to

John

2x+3y+z=42

Darren

3x+y+2z=36

Shelley

x+2y+3z=32

therefore

The system of equations is the option A

5 0

3 years ago

Determine the center and radius: x2 + y2 - 10x + 8y -8 = 0

Kipish [7]

So our equation currently is ⇒ $x^2+y^2-10x+8y-8 = 0$

Let's first move all the constant to one side and group 'like variables' together:

$(x^2-10x)+(y^2+8y) = 8$

Now lets complete the square of both equations

$(x^2-10x+25)+(y^2+8y +16) = 8 + 25 + 16\\(x-5)^2+(y+4)^2 = 49\\(x-5)^2+(y+4)^2 = 7^2$

Now we know the circle's general equation format is:

⇒ $(x-h)^2+(y-k)^2 = r^2$

(h, k) ⇒ coordinate of the center of the circle
r ⇒ length of radius of circle

Thus the radius of the circle is 7

Hope that helps!

7 0

2 years ago

63 is 90% of what number? using double number lines to get the answer

iren2701 [21]

Since the 90% is 63. divide it by 9. then you would get value of 7. then multiple it by 10.
which is equal to 70. so 100% is 70.

7 0

3 years ago

Read 2 more answers

Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol ( μ, rho, σ) for the indicat

ipn [44]

Answer:

c) H0 : p = 5.8%

H1 : p > 5.8%

Step-by-step explanation:

At the null hypothesis, we test that the percentage is equal to a certain value. At the alternate hypothesis, we have a test about this percentage, if it is more, less, or different from the tested value.

A psychologist claims that more than 5.8 percent of the population suffers from professional problems due to extreme shyness

At the null hypothesis, we test if the percentage is 5.8%

$H_0: p = 5.8\%$

At the alternate hypothesis, we test if this percentage is more than 5.8%. So

$H_a: p > 5.8\%$

This means that the correct answer is given by option c.

3 0

2 years ago

Read 2 more answers

Ryan bought 2 1/4 pounds of almonds and divided them into bags with 1/8 pound in each bag.

yaroslaw [1]

A: 1/8b = 2 1/4

B: 2 1/4 / 1/8 = 18
Ryan filled 18 bags.

3 0

3 years ago