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3 years ago

What is the value of the expression shown below?

Mathematics

1 answer:

VMariaS [17]3 years ago

6 0

Answer:

I know I know that question 

You might be interested in

Solve, using the substitution method

iren2701 [21]

2x+4y=16
x-7=-4y

4y=16-2x
4y=16-2(-4y+7)
4y=16+8y-14
-4y=2
-4y/-4=2/-4
y=-0,5

2x=16-4(-0,5)
2x=16+2
2x/2=18/2
x=9

C

5 0

3 years ago

b. Find a 99% confidence interval for mean age of ICU patients using the facts that, in the sample, the mean is 57.55 years and

rjkz [21]

Answer:

99% of confidence intervals for mean age of ICU patients

(53.8920 , 61.2079)

Step-by-step explanation:

Explanation:-

Given sample mean $x^{-} = 57.55$

Given standard error is determined by

S.E = $\frac{S.D}{\sqrt{n} }$

Given data standard error = 1.42

99% of confidence intervals for mean is determined by

$(x^{-} - Z_{0.01} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.01} \frac{S.D}{\sqrt{n} } )$

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.05} = 2.576$

$(x^{-} - 2.576 S.E , x^{-} + 2.576 S.E)$

$(57.55 - 2.576X 1.42 , 57.55+ 2.576 X1.42)$

(53.8920 , 61.2079)

Conclusion:-

99% of confidence intervals for mean is determined by

(53.8920 , 61.2079)

5 0

3 years ago

What is the solution to 4w=2/3

grigory [225]

2/12 or 1/6. You have to divide 2/3 by 4 to get what w equals to.

4 0

3 years ago

Read 2 more answers

PLZ HELPP expand and simplify by collecting like terms -2(4x+2y)(2x-y)

svet-max [94.6K]

Answer:

-4( 4x^2 -y^2)

Step-by-step explanation:

so I did the step on the paper

first line : is the equation itself

2nd line : I multiple the term in the parentheses together

3rd line: I multiple the - 2 to the term I got

4th line : I simplify it

6 0

3 years ago

Read 2 more answers

What is 48% 0f 60,000000

Tanzania [10]

That'd be : 28.8 . I hope this helps. This is it step by step.

60/x=100/48
(60/x)*x=(100/48)*x 
60=2.08333333333*x
(2.08333333333) to get x
60/2.08333333333=x 
28.8=x 
x=28.8

5 0

3 years ago