92 because I'm really good at math
The z-scores of the monthly utility bills for the value of x as $60, $71 and $9 are -1.25, 0.125, and 2.25 respectively.
What is Z-score?A Z-score helps us to understand how far is the data from the mean. It is a measure of how many times the data is above or below the mean. It is given by the formula,
[tex]Z = \dfrac{X- \mu}{\sigma}[/tex]
Where Z is the Z-score,
X is the data point,
μ is the mean and σ is the standard variable.
As it is given that the standard deviation of the monthly utility bills is $8, while the mean is $70. Therefore, the z-score can be written as,
A.) X= 60
[tex]Z = \dfrac{X- \mu}{\sigma}=\dfrac{60- 70}{8} = -1.25[/tex]
B.) X = 71
[tex]Z = \dfrac{X- \mu}{\sigma} = \dfrac{71- 70}{8}=0.125[/tex]
C.) X = 92
[tex]Z = \dfrac{X- \mu}{\sigma}= \dfrac{92- 70}{8}=2.25[/tex]
Hence, the z-scores of the monthly utility bills for the value of x as $60, $71 and $9 are -1.25, 0.125, and 2.25 respectively.
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A rancher’s herd of 250 sheep grazes over a 40-acre pasture. He would like to find out how many sheep are grazing on each acre of the pasture at any given time, so he has some images of the pasture taken by the state department of agriculture’s aerial photography division. Here are three samples of the images.
Sample 1: 4
Sample 2: 1
Sample 3: 9
How do the sample statistics compare to the population mean and standard deviation???
Answer:
sample 3:9
Step-by-step explanation:
hope this helps
pls mark me branliyest
[PLEASE HELP ILL GIVE BRAINLIEST
PLEASE SHOW WORK
Please help with this
Answer:
1, 2, 3, 6, 9, 18, 27, 54
Step-by-step explanation:
Tamu ran 30 minutes and burned 170 calories. PART A: Which equations can be used to find the average number of calories, c, burned per minute?
Answer:
170 divided by 30 or calories divided by minutes
Step-by-step explanation:
the answer could be either but they both mean the same thing just in different words
HELPPP ME PLEASE!!!
(don’t answer if you don’t know or just for points bc i’ll report)
Answer:
The last one
Step-by-step explanation:
Complete the similarity statement for the similar figures then find the scale factor
plz help me
add explanation if you can
What is the probability that someone in your class wants the New England Patriots to win
Answer:
Step-by-step explanation:
It all depends on how many people are in your class.
To calculate probability
Determine a single event with a single outcome.
Identify the total number of outcomes that can occur.
Divide the number of events by the number of possible outcomes.
To determine the probability, Use the formula
What is the formula of probability?
P(A) is the probability of an event “A” n(A) is the number of favourable outcomes. n(S) is the total number of events in the sample space.
P(A | B) = P(A∩B) / P(B)
Enter the median, lower quartile, and upper quartile of the scores of 11 students on the geography quiz.
82, 75, 93, 73, 71, 95, 89, 84, 72, 79, 84
Answer:
Median - 15.5
Lower Quartile - 13
Upper Quartile - 22.5
Steps to calculate Median:
1. Orchestrate your numbers in mathematical request.
2. Check the number of numbers you have.
3. On the off chance that you have an odd number, partition by 2 and gather together to get the situation of the middle number.
4. On the off chance that you have a considerably number, partition by 2. Go to the number around there and normal it with the number in the following higher situation to get the middle.
Steps to calculate Upper and Lower Quartile:
1. Request your informational index from most minimal to most elevated qualities.
2. Track down the middle. This is the second quartile Q2.
3. At Q2 split the arranged informational collection into equal parts.
4. The lower quartile Q1 is the middle of the lower half of the information.
5. The upper quartile Q3 is the middle of the upper portion of the information.
Nic sells advertising packages for a radio station. The company pays him $150 per week and they also pay him $75 for every package he sells. His friend Asia works for the same radio station but she receives a salary only, which is $1,275 per week. How many packages does Nic need to sell in a week to earn as much as Asia?
Answers are:
A) 14
B) 15
C)16
D)20
y-30≥32 lol i need help again
Answer:
y ≥ 62
Step-by-step explanation:
Give Me Brainllest plz T - T
Find mZKLM.
L
M
K
Answer: m KLM
What is the equation for the nth term of geometric sequence 32,48,72
Answer:
[tex]\bold{a_n =32\left(\frac32\right)^{n-1}}[/tex]
Step-by-step explanation:
[tex]a_1=32\\a_2=48\\a_3=72\\\\\dfrac{a_2}{a_1}=\dfrac{48}{32}=\dfrac32\\\\ \dfrac{a_3}{a_2}=\dfrac{72}{48}=\dfrac32\\\\\\\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=\dfrac32=r[/tex]
Therefore the formula:
[tex]a_n=a_1\cdot q^{n-1}\\\\a_n =32\left(\frac32\right)^{n-1}[/tex]
Name a tangent.
HELPPP
Answer:
SUT
Step-by-step explanation:
A tangent to a circle is a straight line which touches the circle at only one point. This point is called the point of tangency
HELP ALMOST CLASS TIME
Answer:
B
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
PLS HELP PLS PLS PLS For #1-2, determine if the sequence is arithmetic or geometric. Then find its common difference or ratio.
1.
[tex]\frac{1}{2}[/tex], 1, 2, 4…
2. -5, 1, 7, 13 …
Answer:
#1 is Geometric
its common ratio is 2
#2 is Arithmetic
its common difference is 6
A trader bought 12 shirts for $150 altogether. He sold 11 of them for $20 each and one for $10.
Work out his overall percentage profit or loss,
Answer:
53%
Step-by-step explananation:
how much did he sell them for?
11*20 = 220
220+10 = 230
so he got a total of 230 off of buying 150
percent is difference of original
(230-150)/150
80/150
about 53%
I think this is right
Please help quickly!
Answer:
-8
Step-by-step explanation:
y=(2^2)-12
y=4-12
y= -8
In ΔKLM, k = 76 inches, l = 30 inches and m=69 inches. Find the measure of ∠M to the nearest degree. pleseeeeee
Answer: 65
Step-by-step explanation:
Measure of ∠M to the nearest degree is [tex]65^{0}[/tex].
What is law of cosine?The law of cosine states that the square of any one side of a triangle is equal to the difference between the sum of squares of the other two sides and double the product of other sides and cosine angle included between them.
Given
k = 76 inches
l = 30 inches
m = 69 inches
From the law of cosines
Cos <M = [tex]\frac{k^{2} +l^{2} -m^{2} }{2.k.l}[/tex]
Cos <M = [tex]\frac{76^{2} +30^{2} -69^{2} }{2.76.30}[/tex]
Cos <M = [tex]\frac{1915}{4560}[/tex]
Cos <M = 0.42
<M = [tex]cos^{-1} (0.42)[/tex]
<M ≈ [tex]65^{0}[/tex]
Hence, measure of ∠M to the nearest degree is [tex]65^{0}[/tex].
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How many solutions does the following system of equations have?
One Solution
O No Solutions
Infinitely Many Solutions
Answer:
I think its two eqautions
Answer:
b
[tex]\int\limits^a_b {x} \, dx[/tex]
Step-by-step explanation:
What is the volume of the rectangular prism?
9514 1404 393
Answer:
17 7/9 yd³
Step-by-step explanation:
The volume is the product of the dimensions.
V = LWH
V = (3 1/3 yd)(2 2/3 yd)(2 yd) = (10/3)(8/3)(2) yd³ = 160/9 yd³ = 17 7/9 yd³
__
Additional comment
You can guess the correct answer with a couple of estimates.
volume is greater than (3)(2)(2) = 12 . . . . rounding down to integer
volume is less than (3 1/3)(3)(2) = 20 . . . . rounding 2 2/3 up to 3
Based on the way these numbers are rounded, the volume is closer to 20 than to 12. This strongly suggests that 17 7/9 is the correct answer.
Solve for the variable:
0.15a + 28.1 = 50
a = ?
Answer:
a = 146
Step-by-step explanation:
0 . 1 5 + 2 8 . 1 = 5 0
3 / 2 0 + 2 8 . 1 = 5 0
3 /2 0 = 2 1 . 9
One hundred nautical miles equals about 185 kilometers. To the nearest kilometer, how far in kilometers is 140 nautical miles?
25,900 km
185 km
76 km
259 km
Answer:
259 km
Step-by-step explanation:
Butterfly method 100/185=140/???
185*140=25900
divide by 100
=295
in a school the number of girls exceeds the number of boys by 15%. Find the ratio of the numbers of boys to girls?
Answer:
2 : 3 is the correct answer
Step-by-step explanation:
happy to help :)
What is the measure for angle CBD
PLSSS HELPP!!!!
The measure of the angle CBD = 180° - 30° = 150°.
Mr. Stewart said that he would pay $750 for a bedroom suite. The suite Mrs. Stewart wants costs $250 less than twice as much money as Mr. Stewart will spend. How much does the suite cost that Mrs. Stewart wants?
Answer:
$1,250
Step-by-step explanation:
Mr. Stewart will spend $750
Mrs. Steward wants $250 less than twice that
750 * 2 is 1500
1500 - 250 is 1250, our final answer
brainliest? please and thank you.
Convert to a mixed number and simplify: 83/6
6
83
Answer:
13 5/6
Step-by-step explanation:
83/6 = ?
6 can go into 83, only 13 times. Which would make 83/6 turn into:
13 5/6
Hopefully this helps :3 sorry if wrong :( Plz mark brainiest if correct :D Your bootiful/handsome! Have a great day luv <3
-Bee~
2 please help. i will give brainlies and 50 points. if you use my points without an answer i will have your account deleted and i will report you.
Answer: Area: 5808 Primiter: 308
Answer:
Answer: A-Area: 5808 Primiter: 308
B-Area is needed
Step-by-step explanation:
What is the solution to the equation x3 = 16?
The solution of the equation x³ = 16 will be;
⇒ x = 2.519
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The equation is,
⇒ x³ = 16
Now,
Since, The equation is,
⇒ x³ = 16
Solve for x as;
⇒ x = ∛ 16
⇒ x = 2.519
Thus, The solution of the equation is,
⇒ x = 2.519
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The difference between the highest and lowest single game point totals for the MIDDLE HALF of the data is ______ points less for Joe's data than Sam's data. Therefore, the MIDDLE HALF of Joe's single game point totals are less varied than Sam's.
Answer:
See Explanation
Step-by-step explanation:
The question is incomplete, as the required data to answer the question are missing.
However, the interpretation of the question is to determine the interquartile range (IQR) of a certain dataset.
Then get the difference between the calculated IQR & Joe's data and also the difference between the calculated IQR & Sam's data
Then, make comparison
To do this, I will use the following assumed datasets.
[tex]Data: 62, 63, 64, 64, 70, 72, 76, 77, 81, 81[/tex]
IQR is calculated as:
[tex]IQR = Q_3 - Q_1[/tex]
[tex]Q_3[/tex] is [tex]the\ median[/tex] of the upper half
[tex]Q_1[/tex] is [tex]the\ median[/tex] of the lower half
For Joe, we have:
[tex]Lower\ half: 62, 63, 64, 64, 70[/tex]
[tex]Upper\ half: 72, 76, 77, 81, 81[/tex]
The median is then calculated as:
[tex]M = \frac{N + 1}{2}[/tex]
For, the lower half:
[tex]Q_1 = \frac{5 + 1}{2} = \frac{6}{2} = 3rd[/tex]
So:
[tex]Q_1 = 64[/tex]
For the upper half:
[tex]Q_3 = \frac{5 + 1}{2} = \frac{6}{2} = 3rd[/tex]
So:
[tex]Q_3 = 77[/tex]
When the same process is applied to Sam's data,
[tex]Q_1 = 52[/tex]
[tex]Q_3 = 58[/tex]
[tex]IQR = Q_3 - Q_1[/tex]
[tex]IQR = 77 - 64[/tex]
[tex]IQR = 13[/tex]
Assume that:
[tex]Joe = 60[/tex]
[tex]Sam = 65[/tex]
[tex]Joe - IQR = 60 - 13 = 47[/tex]
[tex]Sam- IQR = 65- 13 = 52[/tex]
Hence, the IQR is 47 points less for Joe's data than Sam's
o is the centre of the circle if ab equals 6 units oc perpendicular to ab with m on ab, and mc equal one unit find the length of om