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8_murik_8 [283]
3 years ago
7

Simplify the expression. (-3+6)(-3+5)

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

Answer:

6

Step-by-step explanation:

first you do -3+6 which is 3.

then, u do -3+5 which is 2

multiply it and u get 6

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The CEO of a large corporation asks his Human Resource (HR) director to study absenteeism among its executive-level managers at
Fynjy0 [20]

Answer:

Following are the answer to this question:

Step-by-step explanation:

Given:

n = 30 is the sample size.  

The mean  \bar X = 7.3 days.  

The standard deviation = 6.2 days.  

df = n-1  

     = 30-1 \\      =29

The importance level is \alpha = 0.10  

The table value is calculated with a function excel 2010:

= tinv (\ probility, \ freedom \ level) \\= tinv (0.10,29) \\ =1.699127\\ =  t_{al(2x-1)}= 1.699127

The method for calculating the trust interval of 90 percent for the true population means is:

Formula:

\bar X - t_{al 2,x-1} \frac{S}{\sqrt{n}} \leq \mu \leq \bar X+ t_{al 2,x-1}   \frac{S}{\sqrt{n}}

=\bar X - t_{0.5, 29} \frac{6.2}{\sqrt{30}} \leq \mu \leq \bar X+ t_{0.5, 29}   \frac{6.2}{\sqrt{30}}\\\\=7.3 -1.699127 \frac{6.2}{\sqrt{30}}\leq \mu \leq7.3 +1.699127 \frac{6.2}{\sqrt{30}}\\\\=7.3 -1.699127 (1.13196)\leq \mu \leq7.3 +1.699127  (1.13196) \\\\=5.37 \leq \mu  \leq 9.22 \\

It can rest assured that the true people needs that middle managers are unavailable from 5,37 to 9,23 during the years.

7 0
3 years ago
I need help on these 2 questions. Algebra 1
hammer [34]

Answer:

7. is G

8. f(4)=-120

Step-by-step explanation:

7. les do f(0)=4 since its the easiest

F. f(0)=0.4(0+5)(0-2)

    0.4*-2*5=-4                NOT IT. the ans. is +

G. f(0)=-0.4(0+5)(0-2)

    -0.4*-2*5=4               YESSSSSS

H. f(0)=-0.4(0-5)(0+2)

     -0.4*2*-5=4              YESSSSSS

J. f(0)=0.4(0-5)(0+2)

     0.4*2*-5=-4              NOT ITTTT

so G n H

 Put both equation=0

G. 0=-0.4(x+5)(x-2)

    x=-5,2     YASSSS this is the ans.

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=a%20-%207%20%3D%2017" id="TexFormula1" title="a - 7 = 17" alt="a - 7 = 17" align="absmiddle" c
andriy [413]
A would equal 24 because 17+7 is 24
6 0
3 years ago
Find the composite area of the shaded region. Use 3.14 for 11.
Ganezh [65]

Answer:

7

Step-by-step explanation:

4 0
3 years ago
Which of the following is not a step in creating a debt payment plan?
bonufazy [111]

Answer: b. Consolidate all credit cards onto a single card with a single interest rate.


Step-by-step explanation: Steps a, c and d are in correct order. First, we have to arrange our debts in order of paying them off. Second, we need to determine how much extra money we have each month that can be contributed to debt payment. And finally, we need to track our progress of paying debt. So, option b is not included in the steps.

Thus, the correct option is b.  Consolidate all credit cards onto a single card with a single interest rate.


4 0
3 years ago
Read 2 more answers
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