Use any method to solve the system of equations.<br> 3x + 4y = 12<br> 2x + 3y = 10<br> Solve for y.

Eleven letters spelling "probability" are placed in a bag. You pick one, replace it, and then pick another. What is the probabil

Assoli18 [71]

Answer:

It is 2/121.

Step-by-step explanation:

For the first draw, the probability of picking P is 1/11 since there is only one P letter in the 11 letters. If we replace the P after drawing, then for the second draw, the probability of drawing I is 2/11 since there are 2 I's in the 11 letters.

Since the events are seperate, the probability of picking P and then picking I is (1/11)x(2/11) = 2/121.

I hope this answer helps.

5 0

3 years ago

Why Does The Library Have So many Floors?

loris [4]

(Only doing first six because there's just too many)

Reflection over the x-axis: (x, -y)

Reflection over the y-axis: (-x, y)

Reflection over both axes: (-x,-y)

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e.g. (-5,-9) over x-axis -> (-5,9), 4th letter

(2,-3) over y-axis -> (-2,-3), 9th letter

(6,4) over both axes -> (-6,-4), 17th letter

(-7,2) over both axes -> (7,-2), 12th letter

(-3.9,5) over y-axis -> (3.9,5), 1st letter

(4, 1 1/2) over x-axis -> (4, -1 1/2), 19th letter

4 0

3 years ago

7x-6y=15<br> -9x+6y=-9 Please help out

olga55 [171]

Geometric figure: Straight Line

Slope = 2.333/2.000 = 1.167
x-intercept = -15/7 = -2.14286
y-intercept = 15/6 = 5/2 = 2.50000
Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

7*x-6*y-(-15)=0

Step by step solution :

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Step 1 :

Equation of a Straight Line

1.1 Solve 7x-6y+15 = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes
x tells us how far along
m is the Slope or Gradient i.e. how steep the line is
b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line 7x-6y+15 = 0 and calculate its properties

Graph of a Straight Line :

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 5/2 so this line "cuts" the y axis at y= 2.50000

y-intercept = 15/6 = 5/2 = 2.50000
Calculate the X-Intercept :

When y = 0 the value of x is -15/7 Our line therefore "cuts" the x axis at x=-2.14286

x-intercept = -15/7 = -2.14286
Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 2.500 and for x=2.000, the value of y is 4.833. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 4.833 - 2.500 = 2.333 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

Slope = 2.333/2.000 = 1.167
Geometric figure: Straight Line

Slope = 2.333/2.000 = 1.167
x-intercept = -15/7 = -2.14286
y-intercept = 15/6 = 5/2 = 2.50000

7 0

2 years ago

Read 2 more answers

2. Given AMAR, solve for the m&M. Round to the

Naddik [55]

Answer:

what is the question

Step-by-step explanation:

8 0

3 years ago

If r is five less than three times l, then r = A)3l - 5 B)5 - 3l C)5l - 3 D)3(l - 5)

masha68 [24]