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Bingel [31]
3 years ago
6

Please help me! 20 points!

Mathematics
2 answers:
TEA [102]3 years ago
8 0

Answer:

12 1/4 or (Decimal: 12.25)

Step-by-step explanation:

(3 1/2) (3 1/2)

= 7/2 (3 1/2)

= 7/2 (7/2)

= 49/4

= 12 1/4

   I hope I helped you!!

givi [52]3 years ago
4 0

Step-by-step explanation:

When we multiplying, we find the sum of the exponents so

3 {}^{ \frac{1}{2} }  \times 3 {}^{ \frac{1}{2} }  \\  {3}^{ \frac{1}{2}  +  \frac{1}{2} }  \\  =  {3}^{ \frac{2}{2} }  \\  = 3

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im giving my friends 9 cupcakes thats 60 percent of my order how many more cupcakes do i need to get my order to 100 percent
Gwar [14]

Answer:

6 more cupcakes.

Step-by-step explanation:

60% of 15 is 9, so 15-9 is 6.

4 0
3 years ago
The manager of a factory wants to compare the mean number of units assembled per employee in a week for two new assembly techniq
antoniya [11.8K]

Answer:

The most appropriate inferential statistic test in the present situation is the;

b. Two-sample t-test

Step-by-step explanation:

From the question, we have;

The number of subjects in each sample, n₁ = 100

The number of samples = 2

The nature of the test = To compare the two means

The value of the population standard deviation, σ = Unknown

From the given parameters, we have;

The t-test is a method of inferential statistics for determining whether the difference between the mean of two groups is significant, that is if the observed difference are due to chance, where the groups are likely to have some characteristics that are related

The t-test is utilized when testing an hypothesis, and it is used for small samples, where the population standard deviation is unknown

The types of t-test used are;

a) One-sample t-test

b) Two-sample t-test

c) Paired Sample t-test

Therefore, a two-sample t-test is most appropriate.

3 0
2 years ago
Htuhrjnkemldjrhftrfejdkws
kondaur [170]

Answer:

2z + 4 = 8

Z = 2

Step-by-step explanation:

2z + 4 = 8

-4. -4

2z = 8

—- —

2. 2

z. =. 4

Easy Peasy! Hope this helped :) have great day!!

3 0
2 years ago
sean lives about 15.5 miles from the airport which number rounds to 15.5 when ronded to nearest tenth
goldfiish [28.3K]

16.0Answer:

Step-by-step explanation:

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