a bottle contains red marble and blue marbles. a marble is chosen at random and not replaced. then a second marble is chosen at random. determine the probability that at least one of the marbles is red

Answers

Answer 1

Answer: The question can't be answered without knowing how many red marbles and how many blue marbles are in the bottle.

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Simplify (8j^3-10j^2-7)-(6j^3-10j^2-j+12)

Answers

The first step for solving this expression is to remove the first set of parenthesis.
8j³ - 10j² - 7 - (6j³ - 10j² - j + 12)
When there is a "-" sign in front of the parenthesis,, you must change the sign of each term in the parenthesis. This will look like the following:
8j³ - 10j² - 7 - 6j³ + 10j² + j - 12
Eliminate the opposites in the expression
8j³ - 7 - 6j³ + j - 12
Collect the first set of like term (ones with j³)
2j³ - 7 + j - 12
Calculate the difference between basic numbers
2j³ - 19 + j
Lastly,, use the commutative property to reorder the terms
2j³ + j - 19
Since you cannot simplify this expression any further,, the correct answer to your question is 2j³ + j - 19.
Let me know if you have any further questions
:)

How many time greater is 7000 than 700

Answers

7000 is 10times greater than 700

The dimensions of the hallway below are 5 ft. and 4 ft. If the area were to be covered with carpet which costs $2.50 per square foot, how much would carpet for the hallway cost?

Answers

you should just add that well help you

Help pls! Will give brainliest!

Answers

To determine which line among AB, BC, and CA is parallel to the line 2y - 3x = 6, we need to find the slopes of these lines and compare them to the slope of the given line.

The slope-intercept form of a line is y = mx + b, where m is the slope.

Given line: 2y - 3x = 6
To convert it into slope-intercept form, isolate y:
2y = 3x + 6
y = (3/2)x + 3

The slope of the given line is (3/2).

Now, let's find the slopes of the lines AB, BC, and CA:

1. Line AB:
Coordinates of A(-5, -12) and B(11, -4)

Slope (m) of AB = (change in y) / (change in x) = (-4 - (-12)) / (11 - (-5)) = 8 / 16 = 1/2

2. Line BC:
Coordinates of B(11, -4) and C(7, 6)

Slope (m) of BC = (change in y) / (change in x) = (6 - (-4)) / (7 - 11) = 10 / (-4) = -5/2

3. Line CA:
Coordinates of C(7, 6) and A(-5, -12)

Slope (m) of CA = (change in y) / (change in x) = (-12 - 6) / (-5 - 7) = -18 / (-12) = 3/2

Now, let's compare the slopes:

- Slope of the given line: 3/2
- Slope of AB: 1/2
- Slope of BC: -5/2
- Slope of CA: 3/2

The line that is parallel to the given line 2y - 3x = 6 is Line CA, as it has the same slope of 3/2.

Answer:

CA.

Step-by-step explanation:

To find the gradient (slope) of the line 2y - 3x = 6, we need to rewrite the equation in slope-intercept form (y = mx + b), where "m" represents the gradient. Here's how:

2y - 3x = 6

First, isolate "y" on one side of the equation:

2y = 3x + 6

Next, divide both sides by 2 to solve for "y":

y = (3/2)x + 3

Now we can see that the gradient (slope) of the line is (3/2).

Now, let's analyze the three lines AB, BC, and CA, formed by the points A(-5, -12), B(11, -4), and C(7, 6).

The gradient (slope) of the line AB can be calculated using the coordinates of points A and B:

Gradient of AB = (Change in y) / (Change in x) = (-4 - (-12)) / (11 - (-5)) = 8 / 16 = 1/2

The gradient (slope) of the line BC can be calculated using the coordinates of points B and C:

Gradient of BC = (Change in y) / (Change in x) = (6 - (-4)) / (7 - 11) = 10 / (-4) = -5/2

The gradient (slope) of the line CA can be calculated using the coordinates of points C and A:

Gradient of CA = (Change in y) / (Change in x) = (-12 - 6) / (-5 - 7) = -18 / (-12) = 3/2

Now, we compare the gradients of the lines AB, BC, and CA to the gradient of the line 2y - 3x = 6 (which is 3/2). We see that the line CA has the same gradient (3/2) as the line 2y - 3x = 6.

So, the line CA is parallel to the line 2y - 3x = 6.

Clare and Han have summer jobs stuffing envelopes for two different companies. Clare's earnings can be seen in the table.

Number of Envelopes Money in Dollars
400 40
900 90
Han earns $15 for every 300 envelopes he finishes.

a. Who would make more money stuffing 1500 envelopes?

How much more would they make? $ more

b. What is the rate of change for each situation.

Clare = per

Hans = per

c. Who gets pair more in their job?

gets paid more.

Answers

Answer:

yes

Step-by-step explanation:

15 x 300 = 7500

please help me with this math problem: Alice has 1/5 as many miniature cars as Sylvester has.Slyvester has 35 miniature cars. How many miniature cars does Alice have? please show work

Answers

1/5= 20%
35×20%= 7. Alice has seven cars

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