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steposvetlana [31]
3 years ago
11

In how many ways can 7 different card be laid out on a table in a row?

Mathematics
1 answer:
Step2247 [10]3 years ago
7 0
28
4x7
28 different ways they can be placed
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Will give brainliest please explain how
aivan3 [116]

Answer:

x = 5/4

Step-by-step explanation:

√2+√2+√2+√2 = 2^x

4√2 = 2^x

4√2 = 2^{\frac{5}{2} } = 2^{x}

x = 5/2

3 0
3 years ago
In the production of a plant, a treatment is being evaluated to germinate seed. From a total of 60 seed it was observed that 37
djyliett [7]

Answer:

More than 50% would germinate

Step-by-step explanation:

Given that in the production of a plant, a treatment is being evaluated to germinate seed. From a total of 60 seed it was observed that 37 of them germinated

Let us check whether more than 50% will germinate using hypothesis test

H_0: p = 0.50\\H_a: p>0.50\\

(right tailed test)

Sample proportion p =\frac{37}{60} =0.617\\q = 0.383\\Std error = \sqrt{\frac{pq}{n} } =0.0628

p difference = 0.117

Test statistic Z = p difference/std error = 1.864

p value =0.0312

Since p value <0.05 our significance level of 5% we reject null hypothesis

It is  possible to claim that most of the seed will germinate (i.e. more than 50%)

7 0
3 years ago
A die is rolled 30 times. How many times can you expect it to land on a number less than 5?
erma4kov [3.2K]

Answer:

5/6 is your answer

Step-by-step explanation:

no. of favourable observation/ total no of observation

6 0
3 years ago
Find the GCF<br> 1. 12,21,30<br> 2. 11,44
Dafna1 [17]
The GCF of 12, 21, and 30 is 3.
The factors of 12 are: 1, 2, 3, 4, 6, 12
<span>The factors of 21 are: 1, </span>3, 7, 21
<span>The factors of 30 are: 1, 2, </span>3, 5, 6, 10, 15, 30
<span>Then the greatest common factor is 3.
</span>
The GCF of 11, and 44 is 11. 
The factors of 11 are: 1, 11
The factors of 44 are: 1, 2, 4, 11, 44
Then the greatest common factor is 11. 

Hope this helps.
8 0
3 years ago
Read 2 more answers
What is the midpoint of the x-intercepts of<br> f(x) = (x – 2)(x – 4)?
irakobra [83]
2 and 4. (2,0) and (4,0)
6 0
4 years ago
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