All categories

3 years ago

Please help me

Mathematics

2 answers:

Shalnov [3]3 years ago

7 0

Answer:

D. 136°

Step-by-step explanation:

$\because \overrightarrow{EC} \:bisects \: \angle BED. \\\therefore m\angle BEC = m\angle DEC\\\therefore (11x+2)\degree = (8x+20)\degree \\\therefore 11x + 2 = 8x + 20\\\therefore 11x - 8x = 20-2\\\therefore 3x = 18\\\therefore x = \frac{18}{3}\\\therefore x = 6\\\\\because m\angle BED= m\angle BEC + m\angle DEC\\\therefore m\angle BED= (11x+2)\degree + (8x+20)\degree\\\therefore m\angle BED= (19x+22)\degree \\\therefore m\angle BED= (19\times 6+22)\degree \\\therefore m\angle BED= (114+22)\degree \\\huge \purple {\boxed {\therefore m\angle BED= 136\degree}} \\$

GrogVix [38]3 years ago

3 0

Answer:

19x+22

Step-by-step explanation:

You might be interested in

You are buying a new car. The price (MSRP) is $16,995. You are trading in your old car which is valued by the dealer at

icang [17]

Answer:

$804.65

Step-by-step explanation:

Manufacturer's Suggested Retail Price (MSRP)=$16,995

Trade-In Value=$5,500.

<u>Difference</u>

16,995-5500

=$11,495

Since sales tax is 7%, but is paid only on the difference between the price and trade-in value.

Sales Tax =7% of $11,495

=0.07 X 11,495

Sales Tax=$804.65

3 0

3 years ago

Read 2 more answers

Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi village are approximately normally

saveliy_v [14]

Answer:

0.8029 = 80.29% probability that the thickness is between 3.0 and 7.0 mm.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 4.6 millimeters (mm) and a standard deviation of 1.5 mm.

This means that $\mu = 4.6, \sigma = 1.5$

Find the probability that the thickness is between 3.0 and 7.0 mm.

This is the pvalue of Z when X = 7 subtracted by the pvalue of Z when X = 3. So

X = 7

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{7 - 4.6}{1.5}$

$Z = 1.6$

$Z = 1.6$ has a pvalue of 0.9452

X = 3

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{3 - 4.6}{1.5}$

$Z = -1.07$

$Z = -1.07$ has a pvalue of 0.1423

0.9452 - 0.1423 = 0.8029

0.8029 = 80.29% probability that the thickness is between 3.0 and 7.0 mm.

6 0

3 years ago

How much do you have to add to 1,750 m to get 4 m?

Dmitrij [34]

Answer:

is the questions even correct? recheck the units

4 0

3 years ago

Help help help please

kondaur [170]

Answer:

<h2>50°, 60°, 70° (the second answer)</h2>

Step-by-step explanation:

The sum of the angles in a triangle = 180°

We can use the equation:

2x + 80 + 25 - 5x + 6x + 90 = 180

Combine like-terms:

2x + 6x - 5x = 3x

80 + 25 + 90 = 195

195 + 3x = 180

Subtract 195 from both sides:

3x = -15

Divide both sides by -3 to isolate x:

x = -5

Now that you've solved for x, you can replace x with -5 in the equation for each angle.

2(-5) + 80 = 70°

6(-5) + 90 = 60°

25 - 5(-5) = 50°

8 0

3 years ago

One person uses an average of 60 gallons of water per day. On average, how many gallons of water would you expect a family of 4

vovikov84 [41]

The answer would be 1,680

6 0

3 years ago

Read 2 more answers