3 years ago

Y - x + 2= 3x - 4(x - 1)

Mathematics

1 answer:

Levart [38]3 years ago

5 0

Answer:

y=2 and x= all real numbers

Step-by-step explanation:

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Find the measure of the missing angle.

nikklg [1K]

Answer:

138

Step-by-step explanation:

180-42=138

the entire angle is a 180 angle but a is 138

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4 years ago

the ratio of girls to boys in the third hour class is 2;3.There are 12 boys in class how many girls are there?

Maksim231197 [3]

There are eight girls in the class.

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3 years ago

____ - 369 = 286? help a sister out

Verizon [17]

Answer:

655

Step-by-step explanation:

655-369=286

I hope this is correct and have a great day

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3 years ago

Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoc

Len [333]

Answer: 3

Step-by-step explanation:

Given : Standard deviation : $\sigma=4.1\text{ seats}$

Margin of error : $E=\pm5\text{ seats}$

Significance level : $\alpha: 1-0.95=0.05$

By using the standard normal table of z ,

Critical value : $z_{\alpha/2}=1.96$

The formula we use to find the minimum sample size required :-

$n=(\dfrac{z_{\alpha/2}\ \sigma}{E})^2$

i.e. $n=(\dfrac{(1.96)(4.1)}{5})^2=2.58309184\approx3$

Hence, the number of lights should we select if we wish to estimate μ to within 5 seats and be 95 percent confident =3

6 0

3 years ago

Solve 81^x = 27^^^x + 2. A. x = 1 B. x = 2 C. x = 5 D. x = 6

omeli [17]

Answer:

x=6

Step-by-step explanation:

81^x=27^(x+2)

3^4x=3^3(x+2)

4x=3(x+2)

4x=3x+6

x=6

6 0

3 years ago

Read 2 more answers