Answer:
Approximately 68% of people have IQs between 84 and 116.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviations of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean of 100, standard deviation of 16.
Percentage of people with IQs between 84 and 116.
84 = 100 - 16
116 = 100 + 16
So within 1 standard deviation of the mean, which, by the Empirical Rule, is approximately 68%.
Math property
-75+(23+75)=(75+75)-23=0-23=-23
Given:
Consider the expression is:
[tex]-75+23+75[/tex]
To find:
The value of the given expression by using the math properties.
Solution:
We have,
[tex]-75+23+75[/tex]
It can be written as:
[tex]=-75+(23+75)[/tex]
[tex]=-75+(75+23)[/tex] [Commutative property of addition]
[tex]=(-75+75)+23[/tex] [Associative property of addition]
[tex]=0+23[/tex]
[tex]=23[/tex]
Therefore, the value of the given expression is 23.
Consider a political discussion group consisting of 4 Democrats, 9 republicans, and 4 independents. Suppose that two group members are randomly selected in succession to attend a political convention. Find the probability of selecting two Democrats.
Which formula can be used to describe the sequence?
Of(x) = 1.2(2.5) - 1
Of(x) = 2.5(1.2) - 1
O f(x) = 1.2(2.5)*
Of(x) = 2.5(1.2)*
Answer:
C could be used to show the formula
Sequence of numbers is collection of ordered numbers. The given sequence is described by formula:
What is a geometric sequence and how to find its nth terms?There are three parameters which differentiate between which geometric sequence we're talking about.
The first parameter is the initial value of the sequence.
The second parameter is the quantity by which we multiply previous term to get the next term.
The third parameter is the length of the sequence. It can be finite or infinite.
Suppose the initial term of a geometric sequence is and the term by which we multiply the previous term to get the next term is
Then the sequence would look like
(till the terms to which it is defined)
Thus, the nth term of such sequence would be
Tn = ad^n-2
For the given sequence, it can be seen that each term is divided by 3 to get the next term. We can take it as we're doing multiplication by 1/3
Thus, the given sequence is geometric sequence and its characteristics are:
Thus, ith term is given as:
Ti = 27/3^i-2
We write sequence as: {an}b_c
where n starts with value b and runs integer values and end up on n = c
For this case, we've n = 1 to 5, thus,
The given sequence is written as:
{27/3^n-1 }5_1
Thus,
The given sequence is described by formula: {27/3^n-1 }5_1
Learn more about geometric sequence here:
brainly.com/question/2735005
#SPJ7
complete question:
Which formula can be used to describe the sequence below?
27,9,3,1,1/3
ILL MARK BRAINILEST IF YOU ANSWER!!!
Jerry decides to participate in the horseshoe
tournament at the Wellesley Apple Butter and Cheese
festival. The toss of the shoes can be modelled using
the equation, h = -0.1(d + 1)(d - 12), where h represents
height in metres and d represents distance in metres.
a) Sketch the graphical model.
b) What is the maximum height of a horseshoe?
Answer:
[tex]h_{max}=5.5[/tex]
Step-by-step explanation:
Given
[tex]h = -0.1(d + 1)(d - 12)[/tex]
Solving (a): The graph
To do this, we plot h on the vertical axis and d on the horizontal
See attachment for graph
Solving (b): The maximum of h
From the attached graph, h has the maximum value when:
[tex]d = 4.225[/tex]
So, the maximum of h is:
[tex]h_{max}=5.5[/tex]
Complete factorization of x^3+4x^2-20x-48
Answer:
(x + 6) • (x + 2) • (x - 4)
Step-by-step explanation:
STEP
1
:
Equation at the end of step 1
(((x3) + 22x2) - 20x) - 48
STEP
2
:
Checking for a perfect cube
2.1 x3+4x2-20x-48 is not a perfect cube
Trying to factor by pulling out :
2.2 Factoring: x3+4x2-20x-48
Thoughtfully split the expression at hand into groups, each group having two terms :
Group 1: x3-48
Group 2: 4x2-20x
Pull out from each group separately :
Group 1: (x3-48) • (1)
Group 2: (x-5) • (4x)
Explain the Skill
Watch the following video on fractions and then try the exercises.
13
12
14
Practise the Skill
Mia is having a party with friends.
The pizzas and pies have already been cut into portions.
Match the shaded area of the pizzas and pies to the correct fraction.
an image
Correct
an image
Correct
an image
Correct
Practise the Skill
One fifth of the people coming to the party are under 18.
Select this fraction.
14
1
4
Incorrect 110
1
10
15
1
5
12
1
2
Mia has been very creative and made a pizza with different toppings.
an image
What fraction of the pizza is mushrooms?
Incorrect - Correct Answer: 14
1
4
Practise the Skill
At the party, two-fifths of the crisps for guests will be ready salted. Select this fraction.
12
1
2
34
3
4
15
1
5
25
2
5
Correct 23
2
3
52
5
2
Mia cuts a cake equally into ten pieces. Three pieces are left.
an image
What fraction is left?
Correct
One tenth of the guests have brought food for the party. Select this fraction.
110
1
10
18
1
8
15
1
5
14
1
4
12
1
2
Explain the Skill
Finding a Fifth
When an amount is shared into 5 equal parts, each part is called a fifth.
The amount is divided by 5. A fifth is one of five equal parts.
Example
A minibus is carrying 10 people. 15
1
5
of the people on the minibus are children.
Calculate how many people on the minibus are children.
To find a fifth of an amount, divide the amount by 5.
The calculation is 10 ÷ 5 = 2
So, the minibus is carrying 2 children.
Explain the Skill
Finding a Tenth
When an amount is shared into 10 equal parts, each part is called a tenth.
The amount is divided by 10. A tenth is one of ten equal parts.
Example
There are 50 people at a party. 110
1
10
of the people at the party are vegetarian.
Calculate how many people at the party are vegetarian.
To find a tenth of an amount, divide the amount by 10.
The calculation is 50 ÷ 10 = 5
So, 5 people at the party are vegetarian.
Practise the Skill
550 people attend a conference.
15
1
5
of the attendees have a dietary requirement.
Calculate the number of people who have dietary requirements by completing the calculation below.
The average cost for a product is C (x )equals 2 x plus 54 plus 98 over x, where C is measured in dollars and x is the number of units. How many units must be produced in order to minimize average cost
Answer:
7 units
Step-by-step explanation:
Given
[tex]C(x) = 2x + 54 + \frac{98}{x}[/tex]
Required
The units that minimize the average cost
[tex]C(x) = 2x + 54 + \frac{98}{x}[/tex]
Differentiate
[tex]C' = 2 + 0 - 98x^{-2}[/tex]
[tex]C' = 2 - 98x^{-2}[/tex]
Equate to 0 to solve for x
[tex]0 = 2 - 98x^{-2}[/tex]
Collect like terms
[tex]98x^{-2} = 2[/tex]
Divide by 98
[tex]x^{-2} = \frac{1}{49}[/tex]
Rewrite as:
[tex]\frac{1}{x^2} = \frac{1}{49}[/tex]
Take square roots of both sides
[tex]\frac{1}{x} = \±\frac{1}{7}[/tex]
Take multiplicative inverse of both sides
[tex]x = \±7[/tex]
Only positive value will produce critical value. Hence, 7 units will produce the minimum average cost
How far can you travel in 19 hours at 63 mph
Answer:
1197 miles.
Step by step explanation:Speed(s) = 63 mph
Time(t) = 19 hours
Distance(d) = ?
We know,
D = S × T
= 63 × 19
= 1197 miles
Triangles ABC and DEF are similar. The height of
triangle DEF is 4 cm. Find the area of triangle ABC.
a. 1.5 cm
b. 2 cm
c. 6 cm
d. 3 cm
Option C
Height of DEF = 4cm
Therefore ratio = 1:2
Base = 3cm
Height of ABC = 2cm
Area of ABC = 1/2×b×h
= 1/2×3×4
= 6cm²
Option C
Answered by Gauthmath must click thanks and mark brainliest
#21-24 need help with
Answer:
117
Step-by-step explanation:
1×2^6 + 1×2^5 + 1×2^4 + 0×2^3 + 1×2^2 + 0×2^1 + 1×2^0
1×64+1×32+1×16+0×8+1×4+0×2+1×1
=64+32+16+0+4+0+1
=117
What is considered the most famous impossible problem from Greek
antiquity?
A. Riemann's negation
B. Doubling the cube
C. Playfair's axiom
D. Bisecting any angle
Answer:
B. Doubling the cube.
Step-by-step explanation:
Riemann's negation was formulated by German mathematician Hermann Riemann in the 19th Century.
Playfair's axiom was an axiom alternative to the Euclid' fifth postulate, which was formulated in the 19th Century.
The method of bisecting any angle was proposed in late Antiquity thanks to the development of Euclidean Geometry.
The question of double the cube was investigated by Egyptians, Indians and Greeks in antiquity without any success. This question cannot be solved by compass and straightedge according to conclusions of French mathematician Pierre Wantzel in 1.837.
Hence, doubling the cube was the most famous impossible problem from Greek antiquity. (Answer: B)
Express 0.6(27..).)))) as a fraction
I assume you mean the number x = 0.6272727….
You have
10x = 6.272727…
1000x = 627.272727…
==> 1000x - 10x = 990x = 621
==> x = 621/990 = 69/110
I will give brainliest
Answer:
uncertain for the first image and words to choose for the second image
Step-by-step explanation:
The text implies that she does not know and that there are many words to choose.
On July 9, Mifflin Company receives a $10,200, 90-day, 6% note from customer Payton Summers as payment on account. What entry should be made on July 9 to record receipt of the note?
Answer:
Since on July 9, Mifflin Company receives a $ 10,200, 90-day, 6% note from customer Payton Summers as payment on account, to determine what entry should be made on July 9 to record receipt of the note the following calculation must be performed :
90 days = 3 months
6/12 x 3 = 1.5%
10,200 x 1,015 = 10,353
Therefore, a debt cancellation for $ 10,200 must be made in the company's accounting records, plus an interest generation for $ 153, which will be justified by the cash income of $ 10,353.
Find the Distance in Coordinate Plane (23-24)
Find the distance AB Show Work.
Answer:
i am not sure but i think its 1.16
Step-by-step explanation:
Consider the recursive function.
f(1) = 2
f(n) = 5. (n 1), for n > 2
Which statement is true?
A. The value of f(6) is 1/125 times the value of f(3)
B. The value of f(6) is 2 times the value of f(3)
C. The value of f(6) is 125 times the value of f(3)
D. The value of f(6) is 15 times the value of f(3)
9514 1404 393
Answer:
C. 125 times
Step-by-step explanation:
Using the recursion relation, we have ...
f(4) = 5·f(3)
f(5) = 5·f(4) = 5·(5·f(3)) = 25·f(3)
f(6) = 5·f(5) = 5·(25·f(3)) = 125·f(3) . . . . matches choice C
Lines m and p are perpendicular. If the slope of line m is -3, what is the slope of line p?
Answer: The slope of p is 1/3
Step-by-step explanation:
If the lines are perpendicular, this means they are opposite.
Thus, O is opposite P and since O = -3, P = 1/3
Find m(angle) and give a trig equation
Step-by-step explanation:
Just using the Pythagoras theorem
whats the answer to this please help!
Answer:
GH = a unit
Step-by-step explanation:
From the diagram shown, we are told that line AB is parallel to CD. This shows that the distances of the lines perpendicular to these lines are also equal in length. Hence;
EF = GH
Since EF = a unit, then, GH = a unit
A coach surveyed a random sample of 200 college athletes about their height.
A 2-column table with 4 rows. Column 1 is labeled Height (inches) with entries 60 to 64, 65 to 69, 70 to 74, 74 to 76. Column 2 is labeled Frequency with entries 14, 28, 53, 67.
Which statements are correct about the data in the table? Check all that apply.
A bar graph is an appropriate display.
A pie chart is an appropriate display.
A bar graph is not appropriate because the heights of the bars would be too different.
A pie chart is not appropriate because the categories do not add to 100%.
A bar graph is appropriate because the frequencies are given.
Answer:
A bar graph is an appropriate display.
A pie chart is not appropriate because the categories do not add to 100%.
A bar graph is appropriate because the frequencies are given.
Answer:
i. A bar graph is an appropriate display.
ii. A bar graph is appropriate because the frequencies are given.
Step-by-step explanation:
A bar graph is a graphical method that can be used to present an information from a sample of data. It requires drawing of bars of equal width and distance with respect to the information given.
While a pie chart is a method that requires presenting information in a circular chart with respect to each data in sectors of different central angles.
For the given question, the most appropriate method to use is the bar graph with respect to the given information. Thus, the statements that are correct about the data in the table are:
i. A bar graph is an appropriate display.
ii. A bar graph is appropriate because the frequencies are given.
Answer:
The answers are:
A.)A bar graph is an appropriate display.
D.)A pie chart is not appropriate because the categories do not add to 100%.
E.)A bar graph is appropriate because the frequencies are given.
Step-by-step explanation:
Got it right on edge2021, hope this helps you out
Three complex numbers are given as (1 + 21), (3 - 3i), and (4 + 6i). Find
their sum.
Answer:
8 + 11i
Step-by-step explanation:
hope it is well understood
Tom and Carl start 200 miles apart, running towards each other. Tom runs 5 miles per hour faster than Carl. If they meet after 10 hours, how fast are they running?
Answer:
12.5 mph and 7.5 mphStep-by-step explanation:
Tom's speed = xCarl's speed = yWe have:
x = y + 5(x + y)*10 = 200Substitute x and solve for y:
(y + y + 5)*10 = 2002y + 5 = 202y = 15y = 7.5Find x:
x = 7.5 + 5 = 12.5Tom's speed is 12.5 mph
Carl's speed is 7.5 mph
Now
a=b+510(a+b)=200From eq(2)
a+b=20From eq(1)
a-b=5Adding these recent two
2a=25a=12.5mphPutting in eq(1)
b=a-5b=12.5-5b=7.5mphI need help please I don’t understand
Answer:
Step-by-step explanation:
180 = ∠BAC + 52 +62
66 = ∠BAC
Write the equation of the line for the graph shown below, please
Answer:
Given the proposed interrogate, as well as the graph provided, the correct answer is B. Y = 1/2 x + 4
Step-by-step explanation:
To evaluate such, a comprehension of linear Cartesian planes are obligated:
Slopes = rise/run
X- intercept: The peculiar point in which linear data is observed to intersect the x-axis.
Y- intercept: The peculiar point in which linear data is observed to intersect the y-axis.
Slope: 1/2 as for every individual space endeavored, a space of 2 to the right is required.
Y- intercept: (4,0)
Thus, the ameliorated answer to such interrogate is acknowledged as B. Y = 1/2 x + 4.
*I hope this helps.
For this question it’s asking for it in slope intercept form. So all you need to find is the slope and the y intercept.To find the y int look at where the line passes y. In this case it is y=4, then find slope by finding change in y/ change once which is 1/2, so you get y=1/2x+4
h(1)=9
h(n)=h(n-1)·1/9
h(3)=?
Answer:
1/9
Step-by-step explanation:
h1 = 9
h2 = h1 × 1/9 = 9 × 1/9 = 1
h3 = h2 × 1/9 = 1 × 1/9 = 1/9
Answer:
1/9
Step-by-step explanation:
Khan academy
I have trouble with these two questions, even i did my equation but i don’t get the answers
Answer:
$318.17, out of state college is $161.12 cheaper per month
Step-by-step explanation:
72*24 = 1728 + 410*4 = 1728 + 1640 = 3368 + 450 = 18/12 = $318.17
8700+650*9 = 8700 + 5850 = 14550/9 = 1616.66
8500+400*9 = 8500 + 3600 = 12100 + 1000 = 13100/9 = 1455.56
1616.67 - 1455.56= $161.11 (use $161.12)
Which of the following describes the diagonals of a square?
Select the best answer from the choices provided.
A. They are not congruent.
B. They are not perpendicular to each other.
C. They bisect the opposite angles.
D.
All of the answers are correct.
Answer:
ALL OF THE ANSWERS ARE CORRECT .
HOPE IT HELP YOU.
find the missing length indicated
9514 1404 393
Answer:
x = 1500
Step-by-step explanation:
The right triangles are all similar, so the ratio of hypotenuse to short leg is the same for all.
x/900 = (1600+900)/x
x^2 = 900(2500) . . . . . . cross multiply
x = 30(50) . . . . . . . . . . . take the square root
x = 1500
In triangleABC, AC = 15 centimeters, m
Answer:
16.17 cm
Step-by-step explanation:
The solution triangle attached below :
To obtain BC ; we use the sine rule ;
a/ sin A = b / sin B
A = (180 - (68 + 24))
A = 180 - 92
A = 88°
a / Sin 88 = 15 / sin 68
Cross multiply :
(a * sin 68) = (15 * sin 88)
a = 14.990862 / sin 68
a = 16.168165
a = 16.168 cm
The following data show the number of candies in 15 different bags.
35, 48, 36, 48, 43, 37, 43, 39, 45, 46, 40, 35, 50, 38, 48
Answer:
How should we proceed with this question
