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gizmo_the_mogwai [7]
3 years ago
11

Can someone explain step by step? I’m confused. (Mark for brainliest!)

Mathematics
1 answer:
NikAS [45]3 years ago
6 0

Answer:

190

Step-by-step explanation:

57.5 x 2=115 so that is the arc for CE

then you add that to 55 to get 170

a circle is 360 so then you subtract 360 for 170

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An experiment will be conducted to test the effectiveness of a weight-loss supplement. Volunteers will be randomly assigned to t
DerKrebs [107]

Answer:

Option c. The distributions of weight loss of the two treatments are approximately normally distributed.

Step-by-step explanation:

To increase the confidence level, the results must be able to satisfy the following conditions:

  • The sample size is increased. This reduces the margin of the error in the sampling experiment.
  • Reduction of the variability. This means that the less the data varies, the more precise the data is.
  • Using the one-sided confidence level
  • Lowering the confidence level.

All these characteristics can only be satisfied by the normal distribution curve.

3 0
3 years ago
The temperature decreases by 0.5 degrees every hour.
UNO [17]

i think its the 2nd or 1st one

rlly tried here!

8 0
3 years ago
Help me pls the possible answers are 50⁰ 60⁰ 100⁰ and 240⁰​
Alex Ar [27]

9514 1404 393

Answer:

  (b)  60°

Step-by-step explanation:

The sum of angles in a pentagon is 540°, so you have ...

  90° +90° +150° +x +150° = 540°

  x = 540° -480°

  x = 60°

3 0
3 years ago
Solve 4^x+2 = 12 for x using the change of base formula log base b of y equals log y over log b.
valentinak56 [21]

The value of x is 1.66

Step-by-step explanation:

Let use revise the rules of exponential and logarithmic equations

1. If y = b^{x}, then log_{b}(y)=x

2. log_{b}(y) = \frac{log(y)}{log(b)}

Use the rules above to solve the problem

∵ 4^{x}+2=12

- Subtract 2 from both sides

∴ 4^{x}=10

change the exponential equation to logarithmic equation

∴ log_{4}(10)=x

∵ log_{4}(10) = \frac{log(10)}{log(4)}

∴ x = \frac{log(10)}{log(4)}

∴ x = 1.66

The value of x is 1.66

Learn more:

You can learn more about logarithmic function in brainly.com/question/10633485

#LearnwithBrainly

6 0
3 years ago
What’s the simplified form of 2x+3-x+5
Natalija [7]
2x+3-x+5
x+8 is the simplified answer.

Hope this helps!! 
5 0
3 years ago
Read 2 more answers
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