4 years ago

An elevator descends at a constant speed. What is the

Mathematics

1 answer:

Firlakuza [10]4 years ago

4 0

Answer:

-42.75 meters

Step-by-step explanation:

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Evalua cada expresion si m=9 & n=4 6mn= m+5n= n/2-1= m^2/(n+5)

Alborosie

6mn= 216

m+5n= 29

n/2-1= 1

m^2/(n+5)= 9

7 0

3 years ago

1 3/4 ×1/2 find the product

faltersainse [42]

Answer: 7/8

Step-by-step explanation:

If you turn 1 3/4 into a improper fraction the equation is 7/4 times 1/2. 7•1=7 and 4•2=8 so your answer is 7/8.

7 0

3 years ago

-2 (3x - 5) = - 6x + b

kogti [31]

Answer:

b= 10

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A recent survey of 50 executives who were laid off during a recent recession revealed it took a mean of 26 weeks for them to fin

Phoenix [80]

Answer:

95% Confidence interval: (24.24 ,27.76)

The population mean 28 weeks is not reasonable.

Step-by-step explanation:

We are given the following in the question:

Sample mean = 26

Sample size, n = 50

Alpha, α = 0.05

Sample standard deviation, s = 6.2

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 49 and}~\alpha_{0.05} = \pm 2.009$

$26 \pm 2.009(\displaystyle\frac{2.009}{\sqrt{50}} ) = 26 \pm 1.76 = (24.24 ,27.76)$

No, it is not reasonable that population mean is 28 weeks because it does not lie in the confidence interval calculated.

5 0

3 years ago

Determine number of solutions

kenny6666 [7]

No solution
Cause if you substitute the y
Ur final answer will be -2
When we have negative in the answer
It means no solution

6 0

3 years ago