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mestny [16]
3 years ago
8

In a standard deck of 52 cards, what is the probability of drawing a club or a spade?

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
7 0
The answer is b since if you add them together they add up to 26 which is half of 52
sattari [20]3 years ago
4 0

Answer:

B) 50%

Step-by-step explanation:

It says or so it includes both as a probability, since drawing one of the four suits is 25% adding them together would increase the probability for two either two suits to 50%

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gregori [183]

a can either b 6 or -6.

a = \pm 6

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3 years ago
In a village
ankoles [38]

Answer:

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Absorption rates into the body are important considerations when manufacturing a generic version of a brand-name drug. A pharmac
Darya [45]

Answer:

Correct option: (D).

Step-by-step explanation:

A null hypothesis is a hypothesis of no difference. It is symbolized by <em>H₀</em>.

A Type I error is the probability of rejection of the null hypothesis of a test when indeed the the null hypothesis is true.

The type I error is also known as the significance level of the test.

It is symbolized by P (type I error) = <em>α</em>.

In this case the researcher wants to determine whether the absorption rate into the body of a new generic drug (G) is the same as its brand-name counterpart (B) or not.

The hypothesis for this test can be defined as:

<em>H₀</em>: The absorption rate into the body of a new generic drug and its brand-name counterpart is same.

<em>Hₐ</em>: The absorption rate into the body of a new generic drug and its brand-name counterpart is not same.

The type I error will be committed when the null hypothesis is rejected when in fact it is true.

That is, a type I error will be made when the the results conclude that the absorption rate into the body for both the drugs is not same, when in fact the absorption rate is same for both.

Thus, the correct option is (<em>D</em>).

6 0
2 years ago
] Complete the explanation of how you know whether the triangles are similar. If possible, find the Indicated length. A P 2.0 1.
disa [49]

1. The two triangles are similar because the two pairs of angles are equal, therefore the third angles of both triangles must also be equal.

We can call this the AAA similarity criterion

2. To find QR, we must use ratios between 2 known similar sides of both triangles,

\frac{2.0}{1.7}=\frac{1.2}{QR}\text{  , QR=}\frac{1.2\times1.7}{2.0}=\text{ 1.02}

So, QR =1.02

5 0
1 year ago
What it 7 divided by 8 in decimal form
goblinko [34]
Seven divided by eight is 0.88 or 0.875
8 0
3 years ago
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