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Sergeu [11.5K]
3 years ago
15

Can someone explain this to me pls

Mathematics
2 answers:
Nostrana [21]3 years ago
6 0
These two lines are parallel lines, then the zigzag line acts as a 'transversal' , so i would add 75+120+40+90+x+20= 180

345 + x =180

x = -165



hope this helps!!  
just olya [345]3 years ago
4 0
You are solving for x, correct?

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Sylvia has 51.78 pounds of dirt. She has 20 buckets and would like to put 2.56 pounds of dirt into each bucket. Are there enough
antoniya [11.8K]

Answer:

There isn't enough buckets for all of the dirt to be in a bucket.

Step-by-step explanation:

From the question,

She has 20 buckets and would like to put 2.56 pounds of dirt into each bucket.

Hence, the total number of dirt that can be in the 20 buckets is

20 × 2.56

= 51.20 pounds of dirt

Slyvia has 51.76 pounds of dirt.

51.76 - 51.20

= 0.56 pounds of dirt.

From the above calculation we can say that there isn't enough buckets for all of the dirt to be in a bucket

7 0
3 years ago
Write the polynomial in standard form and identify the x-intercept, as well as the zeros for
likoan [24]
Well, ok, the x intercepts aer where the function equals 0
also
if the x intercepts are r1 and r2 then the factored form of the function is
f(x)=a(x-r1)(x-r2) where a is a constant
well, we have it already in that form

f(x)=(x-3i)(x-3i)
the x intercept is at x=3i
standard form requires expansion
we expand to get
f(x)=x²-6i-9
7 0
3 years ago
Consider the probability distribution of a random variable x. Is the expected value of the distribution necessarily one of the p
pav-90 [236]

Answer:

yes . The Expected value must always be one of its possible values of x

Step-by-step explanation:

<u>For example</u> :-

Download docx
8 0
3 years ago
A therapist named Dr. Brown specializes in adolescent anxiety and has been collecting information about the frequency of all cli
irina [24]

Alex's z score of 1.6 means her frequency of anxiety symptoms are 1.6 standard deviations more than the mean of all patients.

Z-score is defined as the relationship between a particular value or data to the mean of all the data present in a normal distribution. When the z-score is zero that means the data is equal to the mean.

Z=\frac{x-\mu}{\rho} where x=raw data, \mu=mean and \rho= standard deviation

Standard Deviation is a measure of how dispersed a data set is around its mean or central value. Numerically Standard deviation is defined as the square root of the variance of the distribution.

  • Lower standard deviation means the data is clustered together
  • A higher standard deviation means that the data is spread out over a larger area.

In the given problem as the z-score of Alex is given as 1.6, we can infer that the frequency of anxiety symptoms for Alex is 1.6 standard deviations more than the mean data.

Therefore from the above formula

x=1.6 \rho+\mu

To learn more about  Z score:

brainly.com/question/25638875

To learn more about Standard deviation :

brainly.com/question/13905583

#SPJ9

7 0
2 years ago
Please help me do this question
bija089 [108]

Answer:

I would say three person(s).

4 0
3 years ago
Read 2 more answers
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