1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elena L [17]
3 years ago
7

Find the measure of angle z in the following figure

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
8 0

Answer:

z=40 degrees

Step-by-step explanation:

a triangle is 180 degrees

<ACB=50 (180-130=50)

50+90=140

180-140=40

Stels [109]3 years ago
3 0

Answer:

40 degrees

Step-by-step explanation:

so in order to find this we first off know that every triangle's inside angles are equal to 180 degrees total.

so if we take that <A is equal to 90 degrees

then we see that the outside of <C is equal to 130 and line BCD is a confirmed straight line

then each line is equal to 180 degrees so we subtract 130 from 180 in order to find the inside angle of C so that would equal 50

so now that we know <A=90

and <C=50

then we add those two together and that equals 140 degrees

and so there is only one more angle which is <Z

so we subtract 140 from the total amount of 180 degrees in the triangle

leaving us with <Z=40 degrees

You might be interested in
What is the value of X
andrezito [222]
The value of x is X=7
3 0
3 years ago
What is the radius of this circle if the circumference is 18 pie cm?
levacccp [35]

Answer:

r = 2.86

Step-by-step explanation:

3 0
3 years ago
A grocery store’s receipts show that Sunday customer purchases have a skewed distribution with a mean of 27$ and a standard devi
34kurt

Answer:

(a) The probability that the store’s revenues were at least $9,000 is 0.0233.

(b) The revenue of the store on the worst 1% of such days is $7,631.57.

Step-by-step explanation:

According to the Central Limit Theorem if we have a population with mean μ and standard deviation σ and we take appropriately huge random samples (n ≥ 30) from the population with replacement, then the distribution of the sum of values of X, i.e ∑X, will be approximately normally distributed.  

Then, the mean of the distribution of the sum of values of X is given by,  

 \mu_{X}=n\mu

And the standard deviation of the distribution of the sum of values of X is given by,  

\sigma_{X}=\sqrt{n}\sigma

It is provided that:

\mu=\$27\\\sigma=\$18\\n=310

As the sample size is quite large, i.e. <em>n</em> = 310 > 30, the central limit theorem can be applied to approximate the sampling distribution of the store’s revenues for Sundays by a normal distribution.

(a)

Compute the probability that the store’s revenues were at least $9,000 as follows:

P(S\geq 9000)=P(\frac{S-\mu_{X}}{\sigma_{X}}\geq \frac{9000-(27\times310)}{\sqrt{310}\times 18})\\\\=P(Z\geq 1.99)\\\\=1-P(Z

Thus, the probability that the store’s revenues were at least $9,000 is 0.0233.

(b)

Let <em>s</em> denote the revenue of the store on the worst 1% of such days.

Then, P (S < s) = 0.01.

The corresponding <em>z-</em>value is, -2.33.

Compute the value of <em>s</em> as follows:

z=\frac{s-\mu_{X}}{\sigma_{X}}\\\\-2.33=\frac{s-8370}{316.923}\\\\s=8370-(2.33\times 316.923)\\\\s=7631.56941\\\\s\approx \$7,631.57

Thus, the revenue of the store on the worst 1% of such days is $7,631.57.

5 0
2 years ago
Why is dividing a fraction by 3 and then multiplying by 2 the same as multiplying by 2/3?
Tema [17]
It would be the same you would already be dividing by 3 because it’s the denominator and the numerator is 2
7 0
2 years ago
Determine the unknown side of the similar triangle.<br> A) 8 <br> B) 12 <br> C) 18 <br> D) 24
blsea [12.9K]

Answer:

B-12

Step-by-step explanation:

Since 24÷12=2 you have to do 6×2 to find the ? and 6×2=12

8 0
3 years ago
Other questions:
  • Jamal ran 8 kilometers sprinted 500 meters and climbed bleachers for a distance of 1.5 kilometers during track practice. How man
    11·1 answer
  • PLEASE HELP!!!! What statement describes the limitation for the reasonable domain compared to the mathematical domain?
    11·1 answer
  • You roll a die 100 times interested in finding the number of rules that come up even. Which of the following reasons is needed t
    13·2 answers
  • How many even, three-digit positive integers have the property that two of the digits are equal, but not all three are equal?
    12·1 answer
  • Please Help Quick(ONLY #5)!!!
    15·2 answers
  • Zane has a bowl of raspberries and blackberries. There are 2 more raspberries than
    15·2 answers
  • A density curve for all the possible weights between 0 pounds and 10 pounds is in the shape of a rectangle. What is the height o
    7·1 answer
  • In the equation y = 1/2x + 3, when x is 6, what is y?
    11·2 answers
  • 4X9 help<br> plsss I will give branilyst
    5·2 answers
  • Find the distance between -6.77777 and 3.55555.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!