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horrorfan [7]
4 years ago
11

Help me plz I need it I'm very desperate help

Mathematics
2 answers:
Klio2033 [76]4 years ago
8 0

Answer:

1/45

Step-by-step explanation:

There are 10 marbles

P ( yellow) = yellow marbles / total = 2/10 = 1/5

We do not replace the marble

There are 9 marbles, 1 of which is yellow

P ( yellow) = yellow marbles / total = 1/9

P ( yellow, no replacement, yellow) = 1/5 * 1/9 = 1/45

vampirchik [111]4 years ago
3 0
The answer is 1/45 because you multiply 2/10 by 1/9, which are the probabilities of both situations.
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What is the slope of a line passing through (3, 4) and (5,8)?
Licemer1 [7]

Answer:

2

Step-by-step explanation:

slope=\frac{y_2-y_1}{x_2-x_1} \\\frac{8-4}{5-3} =\frac{4}{2} =2\\slope=2

8 0
2 years ago
Emma uses a 250 meter roll of creep paper to make streamers how many decameters of Crete paper does Emma have
8090 [49]
Well a decameter is 10 meters so if she has 250 meters then she has 25 decameters     Hope this helps!
8 0
3 years ago
A national organization has been working with utilities throughout the nation to find sites for large wind machines that generat
kozerog [31]

Answer:

"A Type I error in the context of this problem is to conclude that the true mean wind speed at the site is higher than 15 mph when it actually is not higher than 15 mph."

Step-by-step explanation:

A Type I error happens when a true null hypothesis is rejected.

In this case, as the claim that want to be tested is that the average wind speed is significantly higher than 15 mph, the null hypothesis has to state the opposite: the average wind speed is equal or less than 15 mph.

Then, with this null hypothesis, the Type I error implies a rejection of the hypothesis that the average wind speed is equal or less than 15 mph. This is equivalent to say that there is evidence that the average speed is significantly higher than 15 mph.

"A Type I error in the context of this problem is to conclude that the true mean wind speed at the site is higher than 15 mph when it actually is not higher than 15 mph."

8 0
3 years ago
ſ x - 5y = -9( 4x + 4y = - 12Step 1 of 2: Determine if the point (-4,1) lies on both of the lines in the system of equations by
Phoenix [80]

Given:

\begin{gathered} x-5y=-9\ldots\ldots(1) \\ 4x+4y=-12\ldots\text{.}\mathrm{}(2) \end{gathered}

The given point is (-4,1)

Let's check the ordered pair (-4,1) in the first equation

\begin{gathered} x-5y=-9 \\ (-4)-5(1)=-9 \\ -4-5=-9 \\ -9=-9 \end{gathered}

Hence, (-4,1) is a solution of the first equation x-5y=-9.

Now, let's check (-4,1) in the second equation.

\begin{gathered} 4x+4y=-12 \\ 4(-4)+4(1)=-12 \\ -16+4=-12 \\ -12=-12 \end{gathered}

So, (-4,1) is a solution of the second equation 4x+4y=-12.

Hence, (-4,1) is a solution of both equation in the system, then it is a solution to the overall system.

3 0
1 year ago
A toy is shaped as a triangular prism. The toy has a
Anettt [7]

Answer:

\huge\boxed{\sf h = 6.75 \ in.}

Step-by-step explanation:

<u>Given Data:</u>

Base area = A_{B} = 108 in.²

Volume = V  = 729 in.³

<u>Required:</u>

Height = h = ?

<u>Formula:</u>

V=A_{B}h

<u>Solution:</u>

For h, rearranging formula:

\displaystyle h = \frac{V}{A_{B}} \\\\h =\frac{729 \ in.^3}{108 \ in.^2} \\\\h = 6.75 \ in.\\\\\rule[225]{225}{2}

4 0
3 years ago
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