========================================================
Explanation:
Let's say the teacher pulls the two boys out of the line, and stands in their place. So we have 5 girls and 1 teacher making 6 people total.
There are 6! = 6*5*4*3*2*1 = 720 different permutations here. Order matters. This involves the teacher, so let's have him/her step out of the line and have the two boys replace the teacher's position. This guarantees the boys stick together. For any permutation, we have 2 different ways to arrange the boys. So we have 2*720 = 1440 different ways to arrange the students so that the two boys are next to each other.
This is out of 7! = 7*6*5*4*3*2*1 = 5040 different permutations overall (we're arranging 5 girls+2 boys = 7 people).
The probability we're after is going to be 1440/5040 = 2/7
--------
Or you could see it like this
1440 = 2*6!
5040 = 7! = 7*6!
So,
1440/5040 = (2*6!)/(7*6!)
1440/5040 = 2/7
There are 20%, percent more goblins than wizards in magic club. There are 120 goblins in magic club.
How many wizards are in the magic club?
Answer:
100
Step-by-step explanation:
Here is your answer
Let the number of wizards is x
20% more gobins than wizards.
ATQ
Hence Numbers of wizards are 100 in a magic club.
Answer:
480
Step-by-step explanation:
120 ------ \(\frac{20}{100}\)
x ----------\(\frac{100}{100}\)
x·\(\frac{20}{100} = 120\frac{100}{100}\)
x= \(\frac{120}{0,2}\)
x=600
600- 120= 480 wizards in the club
Insert commas and write the following number in the Standard form, word form, and the expanded form. 236506043
PLEASE ANSWER!
Answer:
Indian Standard Form= 23,65,06,043
Word Form: Twenty three crores sixty five lakhs six thousand forty three.
expanded form= 20,00,00,000+3,00,00,000+60,00,000+5,00,000+6,000+40+3
International Standard Form=236,506,043
Word Form: Two hundred thirty six millions five hundred six thousand forty three
expanded form:200,000,000+30,000,000+6,000,000+500,000+6,000+40+3
Step-by-step explanation:
Hope it helps
Please help with this pls
Answer:
Step-by-step explanation:
its c
I rent a gym for $150 for 30 students. Another time I rent the gym for $350 for 70 students. What is my rate per student?
Answer:
The rate is 5 dollars per student.
Step-by-step explanation:
The rate per student can be found with \(\frac{dollars}{student}\):
\(\frac{150dollars}{30student}=5\frac{dollars}{student}\\\\\frac{350dollars}{70student}=5\frac{dollars}{student}\)
The rate is 5 dollars per student.
HELP PLEASEEEEE WILL GIVE 60 POINTS AND MARK U BRAINLY
Answer:
0.125
Step-by-step explanation:
beacuse you would turn the mixed number into a improper fraction and then subtract or turn them into decimals which would be 0.125
Answer:
1/8 is the answer
Decimal Form:
0.125
Step-by-step explanation: Convert the mixed numbers to improper fractions, then find the LCD and combine.
Arectangular field has an area of 646 square feet. The width of the field is 19 feetWite a number in the box to show the missing measurement What is the length of the field?
The area of a rectangle is
\(A=19\cdot x=76\)x is the number missing in the box
\(x=\frac{76}{19}=4\)the length of the field is 30+4 =34 feet
11 players are going to practice in the batting cage. how many different orders are possible
Answer:
Step-by-step explanation:
Which of these could be the value of x in the triangle below
Answer:
5
Step-by-step explanation:
In the same circle or in congruent circles:
13
Chapter Reference
In the plane, if a line is perpendicular to a circle's radius at its outer endpoint, then the
line is ... to that circle
You have 1 attempt left to earn the full credit for this problem.
Answer: In the plane, if a line is perpendicular to a radius at its outer endpoint, then the line is Diames
to the circle
Diameter
GRADE ANSWER INCORRECT
Parallel
Secant
Symmetric matting?
Tangent
Answer:
tangent
Step-by-step explanation:
Hope this helps
6 * 10x^{-3}/8*10x^{-6}
The simplified form of the given expression, 6 × 10⁻³ / 8 × 10⁻⁶, is 3/4 × 10³
Simplifying an expressionFrom the question, we are to simplify the given expression
The given expression is
6 × 10⁻³ / 8 × 10⁻⁶
Simplifying the expression
6 × 10⁻³ / 8 × 10⁻⁶
This can be written as
6/8 × 10⁻³/10⁻⁶
Reduce the fraction
3/4 × 10⁻³/10⁻⁶
Apply the division law of indices
3/4 × 10⁻³ ⁻ ⁽⁻⁶⁾
3/4 × 10⁻³ ⁺ ⁶
3/4 × 10³
Hence, the value is 3/4 × 10³
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What is the scale factor of figure B to figure A?
Scale factor =_________
(40 points)
The scale factor of figure B to figure A is 1/2.
How to find the scale factor?To find the scale factor of figure B to figure A, we need to determine how much the corresponding sides of the two figures have been multiplied or divided by.
Looking at the figures, we can see that the corresponding sides of figure B are half the length of the corresponding sides of figure A. For example, the length of side AB in figure A is twice the length of side AB' in figure B, and the length of side BC in figure A is twice the length of side B'C' in figure B.
Since the corresponding sides of figure B are half the length of the corresponding sides of figure A, the scale factor of figure B to figure A is 1:2 or 1/2.
Therefore, the scale factor of figure B to figure A is 1/2.
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The radius of a circle is 17 meters. What is the circle's circumference?
Answer:\(34\pi\)
Step-by-step explanation:
c=\(2\pi R=2*17\pi =34\pi\)
Answer:
43.98 meters
Step-by-step explanation:
If two angles are vertical, the sum of their measures is equal to the measure of a right angle true or false?
Step-by-step explanation:
False,
Vertical angles isn't always complementary l
Answer:
true
Step-by-step explanation:
If two angles are congruent, their measures are equal.
Between what values of X is there a slight decrease?
Henry bought a phone priced $45.75, but the
total purchase, including sales tax, was $50.33.
Find the percent of tax he paid.
Answer:
10% sales tax
Step-by-step explanation:
Given the following question:
Percent increase from 45.75 to 50.33
To find the answer we use the formula to calculate percent change.
\(\frac{n-o}{o} \times100\)
\(\frac{50.33-45.75}{45.75} \times100=50.33-45.75=4.58\div45.75=0.10010929\times100=10.010929\)
\(10.010929\)
\(0<5\)
10%
The tax of the phone was "10% sales tax."
Hope this helps.
Select the inequality that matches the statement below:
more than 22
A. y < 22
B. y ≤ 22
C. y > 22
D. y ≥ 22
Answer:
C
Step-by-step explanation:
16/17 rounded to the nearest hundredth
Answer:
0.941
Step-by-step explanation:
Maria bought 5 tickets for $20 each. Each ticket had a $2 fee. Write an expression that shows how much Maria paid for the tickets.
There are 32 different colored pencils in a box. What is the probability that the orange pencil and then the green pencil will be chosen at random, without replacement? Enter a fraction or round your answer to 4 decimal places, if necessary
Answer:
Here we find the probability of both the pencils ..
Probability of orange pencil = 1/32
probability of green pencil without replacement of orange pencil = 1/31
So,total probability of both orange and green pencil =
\( \frac{1}{32} \times \frac{1}{31} \)
\( \frac{1}{992} \)
P = 0.0010mark me as brainliest ❤️
A carnival worker has 380 stuffed animals she buys 6 more boxes with 5 stuffed animals in each box how many stuffed animals does she have now
62.8 in scientific notation
Answer:
6.28 x 10²
Step-by-step explanation:
first number must be greater than or equal to 1 and less than 10
if you move the decimal to the left you need to increase the power of ten by one for each move
if you move the decimal to the rightt you need to decrease the power of ten by one for each move
What is the answer of this triangle congruence question.
The value of x in the triangles are 9.
What is a quadratic equation?For variable x : ax² + bx + c = 0, where a≠0 is a standard quadratic equation, which is a second-order polynomial equation in a single variable. It has at least one solution since it is a second-order polynomial equation, which is guaranteed by the algebraic basic theorem.
Given:
The triangles are congruent.
That means, their corresponding angles are also congruent.
In ΔJKL,
the sum of all the angles of the triangle is 180°.
So,
x²-2x + x + 29 + 3x + 52 = 180
x² + 2x - 99 = 0
Solving the quadratic equation,
x² +11x - 9x - 99 = 0.
x (x + 11) -9 (x + 11) = 0
x = 9 and x = -11
Here, we take x = 9.
Therefore, the value of x is 9.
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The fuel economies in miles per gallon (mpg) for nine vehicles are listed below. If one more vehicle is added to the list with a rate of 40 mpg, how will this affect the mean and median?
A. The mean and median will both increase.
B. The mean will increase and the median will decrease.
C. The mean will increase and the median will not change.
D. The mean will decrease and the median will not change.
Option C. The way that the change would affect the mean and the median is that The mean will increase and the median will not change.
How to solve for the mean and the medianWe will find the mean and the median before the 40 was added and after it was added
Before it was added
Mean = 16 + 18 + 20 + 24 + 24 + 24 + 24 + 31 + 32 / 9
= 213 / 9
= 23.67
The median is 24
After we have added 40 the mean would be
16 + 18 + 20 + 24 + 24 + 24 + 24 + 31 + 32 + 40 / 10
= 253 / 10
= 25.3
The median would be 24 + 24 / 2
= 48 / 2
= 24
Hence we can see that the mean got to be higher while the median still remained as 24.
The solution is C.
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. A box contains four red, three yellow, and seven green balls. Three balls are randomly selected from the box without replacement. (a) What is the probability that all three balls are the same colo
Answer:
10/91
Step-by-step explanation:
Number of Red balls = 4
Number of Yellow balls = 3
Number of green balls=7
Total=4+3+7=14
If we pick three balls of the same color, there are three possibilities: (All Red, All Green Or all Yellow).
Therefore:
The probability that all three balls are the same color (note that the selections are without replacement)
=P(RRR)+P(GGG)+P(YYY)
\(=(\frac{4}{14} \times \frac{3}{13} \times \frac{2}{12})+(\frac{3}{14} \times \frac{2}{13} \times \frac{1}{12})+(\frac{7}{14} \times \frac{6}{13} \times \frac{5}{12})\\\\=\frac{1}{91} + \frac{1}{364}+ \frac{5}{52}\\\\=\frac{10}{91}\)
The probability that all three balls are the same color is 10/91.
In trapezoid PQRS, the lengths marked
are in feet. What is the area of the
trapezoid in square feet?
S
5
3
P 10
F.
44
G. 50
H. 62.5
J. 88
K. 100 dion
12
Q
R
The areas of the trapezoid is 50 units².
How to find the area of a trapezoid?The trapezoid PQRS have bases 10 and 12 units respectively. The height of the trapezoid is unknown. Let's find the area of the trapezoid as follows:
area of trapezoid = 1 / 2 (a + b)h
where
a and b are the basesh = height of the trapezoidTherefore,
a = 10 units
b = 15 units
Using Pythagoras's theorem,
5² - 3² = h²
h = √25 - 9
h = √16
h = 4 units
area of trapezoid = 1 / 2 (10 + 15)4
area of trapezoid = 1 / 2 × 25 × 4
area of trapezoid = 100 / 2
area of trapezoid = 50 units²
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Two lines intersect, and you know the measure of one angle. How can you determine the measures of the other three angles
Answer:
Opposite angles are the same measure.
Angles around a point = 360°
When you add all the angles, you get 360.
Angle a and b would measure the same and so would angle d and c. So you double the measure for one of those angles and subtract it from 360.
Then, you half that value( divide by 2) and this is to find the measure of the other angle
Marco wants to know how much the other students in his mathematics class study. He recorded the data he collected in
the following table.
Time spent studying per week (in hours)
2.0
5.0
1.0
2.5
2.5
3.5
0.0
4.5
2.5
4.0
3.5
3.0
2.0
1.5
4.0
2.0
0.5
3.0
1.0
3.0
3.5
1.5
1. Construct a histogram for the data.
Answer:
Step-by-step explanation:
This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts.
Calculate 1 + 3 + 5 +...+ (2n - 1) for several natural numbers n.
Answer:
The solutions for 1 + 3 + 5 +...+ (2n - 1), for the first 10 natural numbers are given in the explanation section below.
Step-by-step explanation:
To calculate 1 + 3 + 5 +...+ (2n - 1) for several natural numbers n, we will use several natural numbers to represent n.
For n= 1,
2n - 1 = 2(1) - 1 = 2 - 1 = 1
Hence, 1 = 1
For n = 2,
2n - 1 = 2(2) - 1 = 4 - 1 = 3
Hence, 1 + 3 = 4
For n = 3,
2n - 1 = 2(3) - 1 = 6 - 1 = 5
Hence, 1 + 3 + 5 = 9
For n = 4,
2n - 1 = 2(4) - 1 = 8 - 1 = 7
Hence, 1 + 3 + 5 + 7 = 16
For n = 5,
2n - 1 = 2(5) - 1 = 10 - 1 = 9
Hence, 1 + 3 + 5 + 7 + 9 = 25
For n = 6,
2n - 1 = 2(6) - 1 = 12 - 1 = 11
Hence, 1 + 3 + 5 + 7 + 9 + 11 = 36
For n = 7,
2n - 1 = 2(7) - 1 = 14 - 1 = 13
Hence, 1 + 3 + 5 + 7 + 9 + 11 + 13 = 49
For n = 8,
2n - 1 = 2(8) - 1 = 16 - 1 = 15
Hence, 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 = 64
For n = 9,
2n - 1 = 2(9) - 1 = 18 - 1 = 17
Hence, 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 = 81
For n = 10,
2n - 1 = 2(10) - 1 = 20 - 1 = 19
Hence, 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 = 100
Point A is located in which quadrant? On a coordinate plane, point A is at (negative 3, 5). Quadrant I Quadrant II Quadrant III Quadrant IV
Answer:
quadrant 2
Step-by-step explanation:
Chad has $31,000 in a savings account. The interest rate is 13
% per year and is not compounded. How much will he have in 4
years?
Answer:
1 year interest: $31000 + $4030
2 year interest: $35030 + $4553.9
3 year interest: $39583.9 + $5145.4
4 year interest: $44729.3
Final Interest: $47120
Step-by-step explanation:
I hope this helps! have a nice day!