IQ scores follow a normal distribution, with a mean of 100 and a standard deviation of 15. Approximately 68% of people have IQ scores in the range [85,115].
What is mean?In mathematics and statistics, the mean is the average of a set of variables. The simple arithmetic mean (add the numbers and divide the total by the number of observations), geometric mean, and harmonic mean are all ways for calculating the mean. The mean (average) of a data set is computed by adding all of the numbers in the set and dividing by the number of values in the set. When arranging data from smallest to greatest, the median is the value in the middle. The mode is the most commonly occurring number in a data set.
Here,
In this example, the population mean is 100 and the standard deviation is 15. Based on the 68-95-99.7 Rule, approximately 68% of the individuals in the population have an IQ between 85 and 115. Values in this particular interval are the most frequent.
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. About 68% of individuals have IQ scores in the interval [85,115] .
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Jeff wants to know how many miles it is from his house to school. On a map the distance is 3 inches. If the scale is 1/2 inch for every 2 miles, how many miles is it to his school?
Answer:
12 miles
Step-by-step explanation:
1/2 inch per 2 miles
3 inches away
3 ÷ 1/2 = 6
6 * 2 = 12
5. Krista wants to paint her
house. She buys 7 gallons of
paint. She uses of the paint on
the front of her house and then
buys 14 more gallons of paint.
How many gallons of paint does
she have left?
Answer:
7
Step-by-step explanation:
please help me with the question
Homework help please
Answer:
[tex]V=868.13\ ft^3[/tex]
Step-by-step explanation:
Given that,
The side length of the base of the pyramid, a = 14.1 ft
The height of the pyramid, h = 13.1 ft
We need to find the volume of the pyramid. The formula for the volume of the square base pyramid is given by :
[tex]V=\dfrac{a^2h}{3}[/tex]
Put all the values,
[tex]V=\dfrac{(14.1)^2\times 13.1}{3}\\\\V=868.13\ ft^3[/tex]
So, the volume of the pyramid is equal to [tex]868.13\ ft^3[/tex].
Help me on this I have no idea how to do this
Answer:
i also don't have the idea
Yesterday, the temperature at noon was 12.8⁰F. By midnight, the temperature had decreased by 14.3 degrees. What was the temperature at midnight?
Answer:
-1.5 degrees
Step-by-step explanation:
have a nice day,
what is the area of the shaded region and what steps do I have to do to find it out
Answer:
Usually, we would subtract the area of a smaller inner shape from the area of a larger outer shape in order to find the area of the shaded region.
Step-by-step explanation:
Determine the equation of the graph. "Will give brainlist if right"
Answer:
I uploaded a file hosting link for your question!
Here is the link:
bít.ly/botshavenobrains
Step-by-step explanation:
Answer is A
Hope it helped :)
PLEASE HELP ME OUT! QUICK POINTS FOR YOU!
All information needed can be found in the image below
Thank you in advance.
Answer:
A med - A small = (36 - 16)pi inch^2
= 20 pi inch^2
Step-by-step explanation:
Area of medium pizza = 6^2 pi
Area of small pizza = 4^2 pi
A med = 36 pi inch^2
A small = 16 pi inch^2
A med - A small = (36 - 16)pi inch^2
Edited :sorry i thought that 8 and 12 where radiuses
Plzzz help plzzzzzzzzzzzzzz
Given:
The figure of two quadrilaterals.
In [tex]ABCD,AB=18,BC=20,CD=22,AD=24[/tex]
In [tex]EFGH,EF=27,FG=30,GH=34, EH=36[/tex]
To find:
Whether the figures are congruent, similar or neither.
Solution:
Ratio of corresponding sides are:
[tex]\dfrac{AB}{EF}=\dfrac{18}{27}[/tex]
[tex]\dfrac{AB}{EF}=\dfrac{2}{3}[/tex]
Similarly,
[tex]\dfrac{BC}{FG}=\dfrac{20}{30}[/tex]
[tex]\dfrac{BC}{FG}=\dfrac{2}{3}[/tex]
[tex]\dfrac{CD}{GH}=\dfrac{22}{34}[/tex]
[tex]\dfrac{CD}{GH}=\dfrac{11}{17}[/tex]
And,
[tex]\dfrac{AD}{EH}=\dfrac{24}{36}[/tex]
[tex]\dfrac{AD}{EH}=\dfrac{2}{3}[/tex]
Clearly, [tex]\dfrac{AB}{EF}=\dfrac{BC}{FG}=\dfrac{AD}{EH}\neq \dfrac{CD}{GH}[/tex].
All corresponding sides are not proportional.
Therefore, the figures are neither similar nor congruent. Hence, third option is correct.
Andre earns $4,000 a month at his new job in order to track his spending and saving he created a monthly budget. Andre divided his income into five categories and created the following circle graph to represent the budget he created for himself use this circle graph to answer the following questions.
a) Andre is planning on renting a new apartment but he wants to stay within his Budget on rent and the utilities. Andre is looking for an apartment the apartment cost $1,450 per month plus $250 for utilities will this apartment fit with an Andres budget? explain your reasoning
b) how much more money does Andre budget for savings than for groceries and utilities? write answer as a dollar amount
Answer:
If Andre plans on staying within his budget, he should choose Apartment 1.
Step-by-step explanation:
Apartment 1: $1100 rent + $250 utilities = $1350 Total Monthly
Apartment 2: $1350 rent + $100 utilities = $1450 Total Monthly
Andre can spend up to $1320 on rent & $320 on utilities, totaling at $1640. In this situation, Andre needs to save as much money as possible. Either on one of these apartments stay below the budget for monthly cost, but Apartment 2's rent goes $30 higher than his budget allows. In the end, this makes apartment 1 the best option for rent, utilities, and ultimate cost.
If Andre plans on staying within his budget, he should choose Apartment 1.
Find the midpoint of the segment with the following endpoints.
(10,7) and (2,1)
Couple of answers if that's ok.
Which of the following percentages is equal.
Wich of the following percentages is equal to 1/4.
Which of the following percentages is equal to 5/21? Round your answer to one decimal place.
PLS ANSWER
Help! Best answer gets brainliest!
Answer:
11
Step-by-step explanation:
because the length of 12 is the same of t+1 so 11+1=12
youre welcome
Answer:
156
Step-by-step explanation:
identify the trinomial that is a perfect square
Answer:
b
Step-by-step explanation:
I need help mann I’m stuck
Answer:
slope -1/3
y- intercept 1
Answer:
Step-by-step explanation:
If i make another answer than a crown will appear click her crown
Which of the following expressions is equivalent to (12x4−4x3+7x+6)+(3x2−4x+14)?
A
12x4−x3+3x+20
B
15x6−8x4+21x+6
C
15x6−4x3+3x+20
D
12x4−4x3+3x2+3x+20
Answer:
It believe its C
Step-by-step explanation:
Are the two triangles congruent ? Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!
Answer:
yes
Step-by-step explanation:
Drag each label to the correct location on the image.
Here is an addition sentence:
13 + (12 + 3) = 28
Drag the numbers and the parentheses to create an equivalent addition sentence that illustrates the associative property of addition.
these are the stuff
( ) 13 12 3 28
Blank + Blank+Blank=
A national standardized test is graded on a scale from 1 to 5. The scores for a particular school are given below. If a
student is chosen at random, what is the probability that they scored a 4 or a 5?
O A. 22.5%
OB. 45%
C. 60%
D. 75%
E. 90
Answer:
C
Step-by-step explanation:
Hope this helps! Pls mark brainliest
Greg bought a jacket for $35.23, a flag for $10.75, and a baseball cap for $17.25. He paid $50 and
the rest he borrowed from his friend. If Greg got $6.77 in change from the cashier, how much did he
borrow from his friend to pay for all the items?
Answer:
His friend gave Greg a 20$ bill.
Step-by-step explanation:
35.23+10.75+17.25=63.23
63.23-50= 13.23
13.23+6.77= 20
Answer:
He borrowed $6.46
Step-by-step explanation:
Add the totals up together. 35.23 + 10.75 + 17.25 to get 63.23
Subtract 50 from 63.23 (63.23 - 50.00) to get 13.23.
Subtract 6.77 from 13.23 (13.23 - 6.77) to get 6.46.
He borrowed $6.46 from his friend!
Hope this helps! Pls make brainliest
The function f(x)=(25)x
is shown on the coordinate plane. Which statement is true?
Answer: In the right end, as x increases without bound, the graph of f(x) decreases.
In the left end, as x decreases without bound, the graph of f(x) increases.
Step-by-step explanation:
According to the graph, the end behaviour of the function in the image is decreasing without bound. When we graph a function, with put an arrow to indicate when a function increases or decreases without bound, that's why in this case we can say the decreases without bound, the function extends without limit.
Therefore, as the x increases, f(x) decreases. If you carefully pay attention to the graph, x is constantly increasing in the right end, and f(x) is more and more close to the x-axis.
Sweaters are $3 for $50. Leslie and her mother spent $100 on sweaters. How many did they buy
Answer:
6
Step-by-step explanation:
Total = $100 ÷ $3
Total = $100/$3
Total [tex]\approx 33[/tex]
Two new Clash of Clans games are coming out. Clash Heroes will cost $38 to download and $4 per month for membership. Clash Legends will cost only $20 to download but $6 per month for membership.
Write an equation for the cost of Clash Heroes:
Write an equation for the cost of Clash Legends:
Set your 2 equations equal to each other and solve to show when they would cost the same:
Which game is a better “deal” – show your work and label your answers!
Answer:
cl has a better deal
Step-by-step explanation:
ch=38+4m=50
cl=20+6m=50
ch=4*3 months =12+38=50
cl=6*5 months=30+20=50
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Answer:
[tex]D.\ (3,\frac{1}{8})[/tex]
Step-by-step explanation:
Given
[tex]y = (\frac{1}{2})^x[/tex]
Required
Points that lies on the above graph
From the given options, only option D lies on the point and the proof is as follows:
[tex]D.\ (3,\frac{1}{8})[/tex]
This means that:
[tex]x = 3;\ y = \frac{1}{8}[/tex]
Substitute [tex]x = 3;\ y = \frac{1}{8}[/tex] in [tex]y = (\frac{1}{2})^x[/tex]
[tex]\frac{1}{8} = (\frac{1}{2})^3[/tex]
[tex]\frac{1}{8} = \frac{1^3}{2^3}[/tex]
[tex]\frac{1}{8} = \frac{1}{8}[/tex]
See that the values at the right and left hand side of the equation are the same.
This means that, [tex]D.\ (3,\frac{1}{8})[/tex] lies on [tex]y = (\frac{1}{2})^x[/tex]
Marius combined 4/8 gallon of lemonade, 3/8 gallon of cranberry juice, and 6/8 gallon of soda water to make punch for a party. How many gallons of punch did he make in all?
13/8, which you can also write as 1 5/8
Choose the correct phrase for 8n
A 8 plus n
B 8 divided by n
C 8 times n
Light yogurt sales in the United States have been declining eight percent per year since 2016 due to younger consumers choosing to switch to Greek yogurt. In 2016, distributors had $1.2 billion in light yogurt sales. Which equation could be used to represent light yogurt sales (in billions of dollars) in the U.S. 't' years after 2016? *
a. y= 1.2(0.92)^t
b. y= 1.2 (8)^t
c y= 1.2(0.08)^t
d. y=1.2(1.08)^t
The point (6, -6) is reflected over the x-axis. What are the coordinates of the resulting point
Answer:
(-6,-6)
Step-by-step explanation:
(x,y) becomes (-x,y) when reflected over the x-axis
Find the next 2 numbers in the sequence: 7, 28, 49,70, ....
Answer:
n
Step-by-step explanation:
Answer: 91, and 112
Step-by-step explanation: its is by two each time for example in the 7 time tables you see 7, 14, 21, 28 so the number after 14 and 21 is the next number, hope this helped have a good day or night. :)