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Artyom0805 [142]
3 years ago
5

When calculating the determinant of a matrix, the answer is a single number rather than a matrix.

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
5 0

Answer:

Yes, one of the properties of determinants is that they are real numbers (including zero) not matrix. This if the entries of the matrix are real. Determinants can be both positive or negative numbers.

Step-by-step explanation:

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mart [117]
First straight in the middle second diagonal
6 0
3 years ago
An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 110 engines
slega [8]

Answer: NO.

Step-by-step explanation:

As per given , we have to test the hypothesis.

H_0:\mu=4.5\\\\ H_a:\mu\neq4.5

∵ H_a is two-tailed , so our test is a two-tailed test.

Also, the standard deviation is known to be 0.8 , so we use z-test.

Test statistic:z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

, where \overline{x} = Sample mean

\mu = population mean

\sigma = Population standard deviation

n= Sample size

Put  \overline{x}=4.6

\mu=4.5

\sigma=0.8

n=  110 , we get

z=\dfrac{4.6-4.5}{\dfrac{0.8}{\sqrt{110}}}\approx1.31

P-value for two tailed test = 2P(Z>|z|)

= 2P(Z>|1.31|) = 2(1-P(Z<1.31))   [∵ P(Z>z)=1-P(Z<z)]

=2(1- 0.9049)  [By z-table]

=0.1902

Decision : ∵ P-value (0.1902) > Significance level (0.02).

It means we do not reject the null hypothesis.

[When P-values < Significance level then we reject the null hypothesis.]

Conclusion : We do not have sufficient evidence at the 0.02 level that the valve does not perform to the specifications.

7 0
3 years ago
Jonathan is making his favorite pasta dish he served his mom 1/12 of the pot of pasta and his brother 1/6 of the pot. how much o
Serjik [45]
3/4
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1/12 + 2/12 is 3/12
1 - 3/12 is 9/12 = 3/4

3/4 of the pot is left over
5 0
3 years ago
Read 2 more answers
36 jelly donuts is 200 percent of how<br> many jelly donuts?
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Answer:

18

Step-by-step explanation:

Equation

2x=36

Solve

x=18

7 0
3 years ago
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What is the LCM of 55,121 and 132
serg [7]
132/2 = 66
66/2 = 33
33/3 = 11
11/11 = 1

132 = 2^2 * 3 * 11

55121/11 = 5011
5011/5011 = 1

55,121 = 11 * 5011

LCM = common factor with larger exponent * not common factors

LCM = 2^2 * 3 * 11 * 5011

LCM = 661,452
6 0
3 years ago
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