3 years ago

Simplify for a = 3, b= -4 and c=-1. 16a - 3c + 5b =

Mathematics

1 answer:

-Dominant- [34]3 years ago

5 0

Answer:

Step-by-step explanation:

16(3)-3(-1)+5(-4)

48+3-20

51-21

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Multiply or divide as indicated (3x)^12/ (3x)^4

iVinArrow [24]

Answer:

$\frac{(3x)^{12} }{(3x)^{4} } =(3x)^{8}$

Step-by-step explanation:

As we are dividing by powers, we can just subtract the powers as they have the same base. As 12-4=8 the answer would be

$\frac{(3x)^{12} }{(3x)^{4} } =(3x)^{8}$

3 0

3 years ago

Read 2 more answers

Please help me with number 2

Anit [1.1K]

It’s A) 3x^2 - 19x - 14

6 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

12. What's the simplified form of x − 1 + 4 + 7x − 3?

Leviafan [203]

The first one is B and the second is D

3 0

4 years ago

Read 2 more answers

I know that x=0 but I don't know how I really got that.

galina1969 [7]

Sqrt(x+4-3)=1
sqrt (x+1) = 1
x+1 = 1^2
x=1-1
x=0

This is how you would get x=0

Hope I helped :)

8 0

4 years ago