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natka813 [3]
2 years ago
14

Multipy (8 - 3i)(2 - 7i) =

Mathematics
2 answers:
Karo-lina-s [1.5K]2 years ago
8 0
(8 - 3i)(2 - 7i)=
16 x -56i - 6i + 21i^2
16 x -50i - 21
BaLLatris [955]2 years ago
3 0

Answer:

The answer would be 6 x 62i -21  (im

not sure if it is right)

Step-by-step explanation:

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A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has d
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Answer:

Read step by step explanation

Step-by-step explanation:

The owner already knows that the limit for the average time delivered pizzas is 38 minutes. So we conclude

1.-The resulting mean from sample data ( x ) ( 27 customers) need to be smaller than 38 minutes, any value of sample above 38 minutes means more time for the delivery action and will indicate a failure for the future project

2.-As sample size is smaller than 30 the test has to be  t-student one tail test to the left

Test hypothesis

Null hypothesis                       H₀                  x  = 38

Alternative hypothesis           Hₐ                  x  <  38

We should test at a significance level α  = 0,05       (α = 5%)

If the result of the test is to accept  H₀  delivery project won´t be implemented, if on the other hand, H₀ is rejected then in the condition of the alternative hypothesis we accept Hₐ the sample indicates that we have a smaller average time than 38 minutes.

4 0
3 years ago
Using long division, what are the first 4 digits in converting<br> 13/33<br> to decimal form?
Elena L [17]

Answer:

0.3939

Step-by-step explanation:

5 0
2 years ago
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Calculate X3 dx .<br><br>A.×2 + c<br>B. 3X2 + c<br>c . x4 + c<br>D . x4/4+c
olga nikolaevna [1]
\LARGE \int x^3 dx = \frac{x^4}{4}+C

So the answer is choice D. You can check this by differentiating the right hand side and you'll get x^3 back again. 

This answer can be found by using the power rule for integrals. That rule is

\LARGE \int x^n dx = \frac{x^{n+1}}{n+1} + C
4 0
3 years ago
Write the equation for the vertical line passing through the point (8, 3).
VLD [36.1K]

Answer:

x=8

Step-by-step explanation:

If it's a vertical line that means it's "sticking straight up" in a sense, so your line would go through all values of 8.

4 0
2 years ago
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Hi guys how do u order decimals like this
Stels [109]

Answer:

Ascending Order: 0.432 < 0.5734 < 0.76373

Descending Order: 0.76373 < 0.5734 < 0.432

Step-by-step explanation:

Check the tenths place of the decimal number and order them accordingly. If the tenths place is the same for two decimal numbers, go on to the next corresponding place to compare their values.

6 0
2 years ago
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