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3 years ago

Answer as a decimal.

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

5 0

Answer:

10.022222 (2 repeats indefinitely)

Step-by-step explanation:

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motikmotik

Answer:

Step-by-step explanation:

180-(x+80) + 180-(2x+20) = 180 -70

180-x-80 + 180-2x-20 = 110

100-x + 160-2x = 110

260 - 3x = 110

-3x = -150

x = <u>50</u>

3 0

2 years ago

. Compute the required sample size given the required confidence in the sample results is 99.74% (Z score of 3). The level of al

Shtirlitz [24]

Answer:

900 sample size

Step-by-step explanation:

To determine the sample size for a proportion, the margin of error formula is used to determine this:

$E=Z_{\frac{\alpha}{2} }*\sqrt{\frac{\hat p \hat q}{{n} }$

$n=\hat p \hat q*(\frac{Z_{\frac{\alpha}{2} }}{E} )^2$

Where p is the proportion, E is the margin of error, n is the sample size, q = 1 - p, $Z_\frac{\alpha }{2}$ is the z score.

Since the proportion is not known, the sample size needed to guarantee the confidence interval and error is at p = 0.5 and q = 1 - p = 1 - 0.5 = 0.5

E = 5% = 0.05, $Z_\frac{\alpha }{2}$ = 3. Hence:

$n=0.5*0.5*(\frac{3}{0.05} )^2\\\\n = 900$

6 0

3 years ago

1. Jose and Carlos received P 450 as prize for

Ipatiy [6.2K]

Answer:

1.Jose received 5/9×P450=P250

2.A dozen =12

12/3=4×165=660

3.40/1002/5

4. 100/60×9=15

5. 60/100×40=24

8 0

2 years ago

Solve the equation and enter the value of x below.<br> -3x-9=-27<br> x=

kondor19780726 [428]

Answer:

Step-by-step explanation:

-3x=-27+9

-3x=-18

x=-18/-3

x=6

6 0

2 years ago

Read 2 more answers

And this one too (1 answer is off on down.)

agasfer [191]

Answer:

(-3,4)

Step-by-step explanation:

I'm not sure of how to explain how it is but basically the point it rotated and then it ends up on the coordinate, (-3,4)

5 0

3 years ago

Read 2 more answers