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
ella [17]
3 years ago
13

Find the value of z. Plsssss helpppppp

Mathematics
1 answer:
serg [7]3 years ago
3 0
Answer:
z =

Explanation:
Inside angles equal to 120
Angles on a straight angel equal to 180
180 - 120 = 69
You might be interested in
Between which two consecutive integers does the square root of 830 lie ​
vodomira [7]

28^2=784

29^2=841

784<830<841

therefore sqrt784<sqrt830<sqrt841

therefore 28<sqrt830<29

Done!

8 0
3 years ago
A normal distribution has a mean of 137 and a standard deviation of 7. Find the z-score for a data value of 121. Incorrect Round
Neko [114]

Answer:

The z-score for a data value of 121 is -2.29.

Step-by-step explanation:

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 137, \sigma = 7

Find the z-score for a data value of 121.

This is Z when X = 121. So

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

Z = \frac{121 - 137}{7}

Z = -2.29

The z-score for a data value of 121 is -2.29.

4 0
3 years ago
Read 2 more answers
HELP ME ASAP PLEASE!!
Daniel [21]

Answer:

set both of them equal to each other:

8x - 8° = 5x + 25°

subtract 5x by both sides of the equations and it becomes:

3x-8° = 25°

now add 8° both sides:

3x = 33°

divide three by both sides:

x = 11°

now thats done to find B:

plug your x value in the B equation:

5x + 25°

5(11) +25°

55 +25°

not sure if you can add here sorry :(. I hope this helped so far :)

5 0
3 years ago
Help................................................
bixtya [17]

Answer:

C. 16ft by 4ft

Step-by-step explanation:

8 0
3 years ago
What is the area of the model in the problem?
nata0808 [166]

Answer:

A=x^2+12x+27\ units^2

Step-by-step explanation:

we know that

The area of the model is equal to the area of a rectangle

The area of a rectangle is equal to

A=LW

we have

L=x+9\ units

W=x+3\ units

substitute

A=(x+9)(x+3)

Apply distributive property

A=x^2+3x+9x+27

Combine like terms

A=x^2+12x+27\ units^2

4 0
3 years ago
Other questions:
  • Translate the word phrase into a math expression. Sheila buys some boxes of pens, with 20 pens in each box.
    13·1 answer
  • What times itself 4 times gets you 10000
    8·2 answers
  • What is the volume of the cylinder?<br> 5767 cm3<br> 2887 cm3<br> 967 cm3<br> 1921 cm3
    11·1 answer
  • Will give brainliest please help <br> 2x-8y=6 <br> y=-7-x
    12·1 answer
  • Which equation results from isolating a radical term and squaring both sides of the equation for the equation /c - 2 - /c=5?
    7·1 answer
  • HEY. I will need help on the 2.06 Quiz: Volumes of Prisms and Cylinders.
    14·1 answer
  • B) Suppose you throw two fair dice. What is the probability of getting an even number on the first and a 5 or 6
    15·1 answer
  • Plz help me well mark brainliest if correct.................
    7·1 answer
  • Evaluate x + y2 (2+ x) if x + 3 and y = -1
    13·1 answer
  • 20 POINTS
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!