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3 years ago

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There is a bag filled with 4 blue and 5 red marbles. A marble is taken at random from the bag, the colour is noted and then it i

s replaced. Another marble is taken at random. What is the probability of getting 2 blues?

1 answer:

Orlov [11]3 years ago

7 0

Answer:

Its a good probability

Step-by-step explanation:

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Nathaniel purchases a one year membership pass to an art museum as a member he receives a discounted entrance fee the total cost

Arturiano [62]

For this case, we must find the equation of the line.
The generic equation of the line is:
$y-yo = m (x-xo)
$
The slope of the line is:
$m = \frac{y2-y1}{x2-x1}$
Substituting values we have:
$m = \frac{15-12}{2-0}$
Rewriting:
$m = \frac{3}{2}$
$m = 1.5$
We now choose an ordered pair:
(xo, yo) = (0, 12)
Substituting values we have:
$y-12 = 1.5 (x-0)$
Rewriting the equation:
$y= 1.5x+12$
For 20 visits, we evaluate the equation when x = 20.
We have then:
$y= 1.5(20)+12$
$y= 30+12$
$y= 42$
Answer:
The discounted entrance fee is 1.5$. The total cost is 42$ after 20 visits

3 0

3 years ago

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On the way to school, if the ratio of walkers to bus riders is 2:7, then the number of bus riders is ________ times the number o

Yakvenalex [24]

It is 3.5 times the number of walkers

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3 years ago

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Determine the equation of the circle graphed below. <br><br> ( please help me )

shepuryov [24]

Answer:

(x - 3)² + (y + 5)² = 10

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k) = (3, - 5 ) , then

(x - 3)² + (y - (- 5) )² = r² , that is

(x - 3)² + (y + 5)² = r²

r is the distance from the centre to a point on the line

Calculate r using the distance formula

r = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }$

with (x₁, y₁ ) = (3, - 5) and (x₂, y₂ ) = (6, - 4)

r = $\sqrt{(6-3)^2+(-4+5)^2}$

= $\sqrt{3^2+1^2}$

= $\sqrt{9+1}$

= $\sqrt{10}$ ⇒ r² = ( $\sqrt{10}$ )² = 10

(x - 3)² + (y + 5)² = 10 ← equation of circle

6 0

3 years ago

One number is 9 more than another number, and the sum of the two numbers is 35.

Effectus [21]

<h2><u>Answer:</u></h2>

One number = x

Other number = 9 + x

Sum of the numbers = 35

Value of the smaller number (x) = ?

$9 + x + x = 35 \\ 9 + 2x = 35 \\ 2x = 35 - 9 \\ 2x = 26 \\ x = \frac{26}{2} \\ x = 13$

<h3>➟ The value of the smaller number is <u>13</u></h3>

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Please help me I need help with this one I will give you the brain thing and extra points

Ipatiy [6.2K]

I’m pretty sure it is Y=3x-7 I hope I can help

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3 years ago