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aivan3 [116]
3 years ago
6

7/3*+1/3=4+5/3x this is a test pls helppp

Mathematics
2 answers:
malfutka [58]3 years ago
8 0

Answer:

2.125

Step-by-step explanation:

Andreyy893 years ago
3 0

Answer:

I am sorry. To answer a test is against the Honor Code, I cannot help you.

Step-by-step explanation:

Remember PEMDAS :)

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406 divided by 140 makes 2.9 multiply that 100 and you arrive at 290%. Hope this helps!
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IT IS A ANGLE QUESTION <br><br> PLS HELP
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In a study conducted in the United Kingdom about sleeping positions, 1000 adults in the UK were asked their starting position wh
earnstyle [38]

Answer:

0.41 - 1.96\sqrt{\frac{0.41(1-0.41)}{1000}}=0.380

0.41 + 1.96\sqrt{\frac{0.41(1-0.41)}{1000}}=0.440

The 95% confidence interval would be given by (0.380;0.440)

0.41 - 2.58\sqrt{\frac{0.41(1-0.41)}{1000}}=0.370

0.41 + 2.58\sqrt{\frac{0.41(1-0.41)}{1000}}=0.450

The 99% confidence interval would be given by (0.370;0.450)

Step-by-step explanation:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. And the critical value would be given by:

z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The confidence interval for the mean is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

If we replace the values obtained we got:

0.41 - 1.96\sqrt{\frac{0.41(1-0.41)}{1000}}=0.380

0.41 + 1.96\sqrt{\frac{0.41(1-0.41)}{1000}}=0.440

The 95% confidence interval would be given by (0.380;0.440)

And for the 99% confident interval the critical value would be 2.58 and if we replace we got:

0.41 - 2.58\sqrt{\frac{0.41(1-0.41)}{1000}}=0.370

0.41 + 2.58\sqrt{\frac{0.41(1-0.41)}{1000}}=0.450

The 99% confidence interval would be given by (0.370;0.450)

3 0
3 years ago
NEED HELP ASAP!!! GIVING BRAINLIEST+20 POINTS TO B4ST ANSWER FOR THESE 2 QUESTIONS!! YOU CAN DO IT! :D
Gelneren [198K]

Answer:

See below ↓↓

Step-by-step explanation:

1.

  • 2/3 x 2/3
  • Numerator (N) = 2 x 2 = 4
  • Denominator (D) = 3 x 3 = 9
  • Fraction = N/D = 4/9
  • ⇒ 3. four ninths

2.

  • Area completed = 4/6 x 2/5
  • Numerator (N) = 4 x 2 = 8
  • Denominator (D) = 6 x 5 = 30
  • Fraction = N/D = 8/30
  • ⇒ 4. eight thirtieths
6 0
2 years ago
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