Step-by-step explanation:
Marcus 24
Alaina 24 - 8 = 16
Tory 16×2 = 32
in total they sent
24 + 16 + 32 = 72
the ratio of Tory's texts to the total of all 3 friends is
32/72 = 4/9
How do you solve 2=11+3(m+3)?
Answer: m= -6
Step-by-step explanation: 2 = 11 + 3m + 9
3m = 2 - 11 - 9
3m = -18
Divide both sides by 3.
m= -6
Answer:
m = -6
Step-by-step explanation:
Step by step explanation:
2-11 = 3m+9 ==》3m = -18 ==》m = -18/3 ==》m= -6
group of scandinavians consists of 5 swedes, 6 finns, and 7 norwegians. they are seated at random around a table. compute the following probabilities: (a) that all swedes sit together, (b) that all swedes and all the finns sit together, and (c) that all the norwegians, all the swedes, and all the finns sit together.
For the following data of group of Scandinavians consisting of Swedes, Finns and Norwegians the probability for the following parts will be:
By using the formula, Circular permutation = (n-1)
Total permutations = 18 - 1 = 17
(a) all the swedes sit together
Total permutations where all the swedes sit together
= 13 x 5
all swedes sitting on 5 consecutive seats so they can be arranged times and everyone including Norwegians as a group can be arranged in
Probability that all the swedes sit together = [tex]\frac{13 X 5}{17}[/tex]
(b) that all the Finns and all the Swedes sit together
Total permutations where all the Finns and all swedes sit together = 8 x 6 x 5
Probability that all the Finns and all swedes sit together = [tex]\frac{8 X 6 X 5}{17}[/tex]
(c) that all the Norwegians, Swedes, and Finns sit together.
Total permutations where all the Norwegians, Swedes, Finns sit together = (3-1)
So Probability that all the Norwegians, Swedes, Finns sit together = [tex]\frac{2 X 6 X 5 X 7}{17}[/tex]
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The area of a rectangle is 215.1 m². If the length is 18 m, what is the perimeter of the
rectangle?
Answer: 59.9 m
Step-by-step explanation:
Area of rectangle = Length times Width
We already know the length is 18m
So take 215.1 divided by 18= 11.95m
To find the perimeter of the Rectangle we use the formula
p= 2(18+ 11.95) = 59.9 m
So the perimeter is 59.9 m
which expression shows a way to factor 16 + 72
The expression that shows a way to factor 16 + 72 is 8(2 + 9)
How to determine the way to factor the expression?From the question, we have the following parameters that can be used in our computation:
16 + 72
Express the terms of the expression as products
So, we have the following representation
16 + 72 = 8 * 2 + 8 * 9
Factor out 8 from the expression
This gives
16 + 72 = 8 * (2 + 9)
Hence, the factored expression of 16 + 72 is 8 * (2 + 9)
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Find domain and range please! Also, due tmrw!
The Domain of the Function is {-2, -1, 0,1 ,2, 3, 4, 5} and the Range of the Function is {4, 3, 2, 1, 0, -1}
What are Functions?
A function is an expression, rule, or law in mathematics that describes a connection between one variable (the independent variable) and another variable (the dependent variable).
Solution:
We neeed to find the Domain and Range of the Function
Domain refers to all the values of x = {-2, -1, 0,1 ,2, 3, 4, 5}
Range refers to all the values of y = {4, 3, 2, 1, 0, -1}
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working together, it takes two different sized hoses 40 minutes to fill a small swimming pool. if it takes 60 minutes for the larger hose to fill the swimming pool by itself, how long will it take the smaller hose to fill the pool on its own?
It will take 120 minutes for smaller hose to fill the complete swimming pool on its own.
Let us represent the complete swimming pool as 1. Now, total time required to fill the swimming pool is 40 hours. So, amount of swimming pool filled in 1 minute = 1/40
Similarly, amount fo swimming pool filled by larger hose in 1 minute = 1/60
Now for the smaller hose, the amount of swimming pool filled in 1 minute = 1/40 - 1/60
The amount of swimming pool filled in 1 minute = (60 - 40)/2400
The amount of swimming pool filled in 1 minute = 20/2400
The amount of swimming pool filled in 1 minute = 1/120
Total time taken to fill swimming pool = 1 ÷ (1/120)
Total time taken to fill swimming pool = 120 minutes
Thus, 120 minutes are required.
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(a)The perimeter of a rectangular parking lot is 350 m . If the length of the parking lot is 97 m , what is its width?
The width of the parking lot is 78 m
We have been given the perimeter of a rectangular parking lot which is equal to 350 m.
We know the perimeter of a rectangular plot is 2 X (width of the plot ) + 2 X (length of the parking lot ).
And the length of the parking lot is given as 97 m.
2 X (width of the plot ) +2 X (length of the parking lot ) =350 m
2 X (width of plot ) + 2 X 97 =350
2 X (width of the plot ) =156 m
width of the plot = 78 m
Hence the width of the plot is 78 meters.
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The width of this rectangular parking lot is equal to 78 meters.
How to calculate the perimeter of a rectangle?In Mathematics and Geometry, the perimeter of a rectangle can be calculated by using this mathematical equation (formula);
P = 2(L + W)
Where:
P represent the perimeter of a rectangle.W represent the width of a rectangle.L represent the length of a rectangle.By substituting the given side lengths into the formula for the perimeter of a rectangle, we have the following:
P = 2(L + W)
350 = 2(97 + W)
175 = 97 + W
Width, W = 175 - 97
Width, W = 78 meters.
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This design began from the construction of a regular hexagon.
Select all true statements about quadrilateral JKLO.
1.) When JKLO is reflected across segment OA, JKLO is taken to HGLO. So, quadrilateral JKLO is congruent to quadrilateral HGLO.
2.) When JKLO is reflected across segment OJ, JKLO is taken to JIHO. So, quadrilateral JKLO is congruent to quadrilateral JIHO.
3.) When JKLO is reflected in any way, it will not produce another congruent quadrilateral in this figure. However, there is a way to translate JKLO to take it to another quadrilateral in this figure.
4.) When JKLO is reflected across segment OI, JKLO is taken to JIHO. So, quadrilateral JKLO is congruent to quadrilateral JIHO.
5.) When JKLO is reflected across segment OL, JKLO is taken to HGLO. So, quadrilateral JKLO is congruent to quadrilateral HGLO.
The statement 2) and 5) about the construction are correct.
What is construction?In geometry, the term "construction" refers to precisely drawing forms, angles, or lines. These structures simply require a pencil, compass, and straightedge (a ruler).
Given this, a design was created by building a standard hexagon.
The construction's real claims are as follows:
2) JKLO is taken to JIHO when it is mirrored across segment OJ. Therefore, quadrilateral JKLO and quadrilateral JIHO are congruent.
5) JKLO is transferred to HGLO when it is reflected over segment OL. Therefore, quadrilateral JKLO and quadrilateral HGLO are congruent.
Therefore, statement 2 and 5 about the structure are true.
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Write an equivalent expression by using the distributive property.
a. 2(3x+5)
b. 7(7a+6)
c. Sa(4a+8b)
d. 2y(4x-3y)
e. 3z(9-10z)
f. 6(3x+4+2y)
g. 11c(2c+7a)
h. 8b(5+2s+3b²)
i. 7a(a²-3a+6)
j. 9(4p²+3p-5)
The equivalent expression of each expression given, using the distributive property, are:
a. 6x + 10
b. 49a + 42
c. 20a² + 40ab
d. 8xy - 6y²
e. 27z - 30z²
f. 18x + 24 + 12y
g. 22c² + 77ac
h. 40b + 16bs + 24b³
i. 7a³ - 21a² + 42a
j. 36p² + 27p - 45
What is the Distributive Property?If we have an expression given as a(b + c), according to the distributive property, we can write an equivalent expression by using the term "a" to multiply each of the terms within the bracket, which will give us: a(b + c) = ab + ac.
a. 2(3x + 5), applying the distributive property, multiply each of the terms within the parentheses by 2:
2(3x) + 2(5)
6x + 10
Therefore, the equivalent expression of 2(3x + 5) is 6x + 10.
b. 7(7a+6)
7(7a) + 7(6)
= 49a + 42
c. 5a(4a+8b)
= 5a(4a) + 5a(8b)
= 20a² + 40ab
d. 2y(4x-3y)
= 8xy - 6y²
e. 3z(9 - 10z)
= 27z - 30z²
f. 6(3x + 4 + 2y)
18x + 24 + 12y
g. 11c(2c + 7a)
22c² + 77ac
h. 8b(5 + 2s + 3b²)
40b + 16bs + 24b³
i. 7a(a² - 3a + 6)
7a³ - 21a² + 42a
j. 9(4p² + 3p - 5)
36p² + 27p - 45
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21. A virus reproduces by tripling every half hour. If a single virus gets into your system and continues at this rate, how much of it will be in your system after a 24-hour period. (Hint: there would be two instances of tripling after the first hour) 24 hours
Please this is urgent need within 20-30 mins
Answer:
Not 100% sure but I believe the answer is 110592.
Step-by-step explanation:
48^3= 110592
Which of the following are the roots of the quadratic equation 3x^2 + 7x + 2 = 0?
Step-by-step explanation:
I have $16 more than my sister Sue,
She has $10 more than brother Paul.
Together we have $66.
How much money does Paul have?
Answer: $10
Step-by-step explanation:
Sue has $10 more than Paul which means she has $20. Who is speaking has $16 more than Sue ($16 more than $20) which means they has $36.
Adding all of their money, $10, $20, and $36, equals $66
If a building contractor hires 8 day laborers and 2 concrete finishers, his payroll for the day is $1464. If he hires 1 day laborer and 5 concrete finishers, his daily cost is $943. Find the daily wage for each type of worker. Solve the problem using matrices.
The day worker's daily compensation is $160, while the concrete finisher's daily wage is $143.
What is matrices?A matrix is a numerical arrangement that is divided into rows and columns. Introduce yourself to matrices and learn about their dimensions and elements. A matrix is a rectangular array of integers divided into rows and columns. Matrix A, for example, contains two rows and three columns. A matrix is a collection of integers that are organized in rows and columns to form a rectangular array. The numbers are referred to as matrix elements or entries. Matrices are widely used in engineering, physics, economics, and statistics, as well as in many disciplines of mathematics.
Here,
Let x be the Charge for day labor and y be the charge for concrete finisher,
8x+2y=1464
x+5y=943
multiply x+5y=943 by 8,
8x+40y=7544
8x+2y=1464
subtracting them,
38y=6080
y=$160
x+5*160=943
x=943-800
x=$143
The daily wage for day worker is $160 and the daily wage for concrete finisher is $143.
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Which expression is equivalent to 3(−5.5b − 3) − (5b + 7)?
11.5b + 4
−21.5b − 2
−21.5b − 16
11.5b − 16
Answer:
-21.5b - 16
Step-by-step explanation:
Simplify the expression
3(−5.5b − 3) − (5b + 7)
-16.5b - 9 - 5b - 7 [Expand the parentheses]
-21.5b - 16 [Add like terms]
This matches the third option.
For a recipe, Val uses 4 cups of sugar for each cup of flour. How many cups of flour does Val need when he uses 1 cup of sugar?
Which one is correct
1/4
1/2
4
1
Answer:
1/4
Step-by-step explanation:
4 : 1 = 1 : x
x = 1 · 1 / 4
x = 1/4
If f(x)=3x+2 and g(x)=x2−x, find the value. f(−2)=
The Function value of f(-2) is -4
What are Function?
Exactly each element of Y is assigned to each element of X in a mathematical function from the a set X to a set Y. Both the set X as well as the set Y are referred to as the function's domain and codomain, respectively. Al-Biruni as well as Sharaf al-Din al-Tusi were two Persian mathematicians who are credited with developing the earliest known method for approaching the concept of function. The original conception of functions was the relationship between varying quantities and other variables. An illustration of this is how time affects a planet's position. The idea was developed historically at the conclusion of the 17th century with the development of infinitesimal calculus, and up to until nineteenth century, the functions taken into consideration were differentiable.
Solution:
Given: f(x) = 3x + 2
To find: Value of f(-2)
To solve this problem we will simply replace the value of x in Function with -2
f(-2) = 3*(-2) + 2
f(-2) = -6 + 2
f(-2) = -4
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Help meeeeee I don’t knowwwwwwwww
Answer:
# of adult tickets = 10
# of child tickets = 4
Step-by-step explanation:
a = # of adult tickets
c = # of child tickets
a + c = 14
a = 14-c
9a + 5c = 110
9(14-c) + 5c =110
126 - 9c + 5c = 110
-4c = 110-126 = -16
c = -16/-4 = 4
a = 14-4 = 10
10 grams is the same as how many ounces?
The value of the one-gram quantity in ounces will be 0,35274 ounces.
What is unit conversion?Multiplication or division by a numerical factor, selection of the correct number of significant figures, and unit conversion are all steps in a multi-step procedure.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the quantity of some materials is measured in 10 grams. The quantity of the material in ounces will be calculated as,
1 grams = 0.035274
10 grams = 10 x 0.035274
10 grams = 0.35274 ounces
Therefore, the value of the one-gram quantity in ounces will be 0,35274 ounces.
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Your cell phone plan costs $24.99 per month plus $0.16 for each text message you send or receive. You have at most $30 to spend on your cell phone bill. What is the maximum number of text messages that you can send or receive next month?
Please use an inequality equation
Answer:
Step-by-step explanation:
ok
how many ways can you distribute 6 faceless players over 4 servers (each of the servers are identical)?
Therefore, there are 4 x 1128 = 4512 possible 5 card poker hands with at least 3 aces that can be dealt from a standard deck of 52 cards.
1. There are 4 aces in a standard deck of 52 cards, so the maximum number of aces in a 5-card poker hand is 3.
2. There are C(4,3) = 4 ways to choose 3 aces out of the 4 aces in the deck.
3. For the remaining 2 cards, there are C(48,2) = 1128 ways to choose them from the 48 non-ace cards.
4. Therefore, there are 4 x 1128 = 4512 possible 5 card poker hands with at least 3 aces that can be dealt from a standard deck of 52 cards.
There are 4 aces in a standard deck of 52 cards, so the maximum number of aces in a 5-card poker hand is 3. There are C(4,3) = 4 ways to choose 3 aces out of the 4 aces in the deck. For the remaining 2 cards, there are C(48,2) = 1128 ways to choose them from the 48 non-ace cards.
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Rectangular prism A is similar to rectangular prism B. The ratio of the surface of A to B is 4:1. If the volume of rectangular prism B is 12 cm3 , what is the volume of rectangular prism A?
The volume of rectangular prism A will be 48 cm³
How to find area of Rectangular Prism?
The volume of a rectangular prism is given by the formula:
A = lwh
Where:
l = length
w = width
h = height.
Since the surface ratio of rectangular prism A to rectangular prism B is 4:1, the ratio of the linear dimensions of A to B must also be 4:1.
This means that if one linear dimension of rectangular prism A is 4 times the size of the corresponding dimension of rectangular prism B, then all of the linear dimensions of A will be 4 times the size of the corresponding dimensions of B.
Since the volume of a rectangular prism is given by the product of its linear dimensions.
The volume of rectangular prism A will be 4 times the volume of rectangular prism B.
Therefore, if the volume of rectangular prism B is 12 cm³, the volume of rectangular prism A will be 4 * 12 cm³ = 48 cm³.
Hence, The volume of rectangular prism A will be 48 cm³.
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! if f( n + 1) = f(n) + 2 and f(2) = 4 then f(4) =
explain
Answer: 8
Step-by-step explanation:
From our knowledge, we know two things.
f(n + 1) = f(n) + 2f(2) = 4From here, we can work out what f(3) is by substituting n as 2
f(2 + 1) = f(2) + 2
f(3) = 4 + 2 = 6
And we can work out f(4) by substituting n as 3
f(3 + 1) = f(3) + 2
f(4) = 6 + 2 = 8
Eventually, if you continue doing this, you will see a sequence forming where the next number is the previous number added by 2.
a company wants to hire a software engineer, an administrative assistant, and a sales representative. there are 4 possible candidates for the position of software engineer, 4 for the position of administrative assistant, and 6 for the position of sales representative. how many ways are there to choose the three people who will be hired?
The number of ways in which we can select a software engineer, an administrative assistant, and a sales representative is 48.
Since we are only choosing one option from each category, the number of alternatives for each category is equal to the number of combinations for each category .
Using the equation for each pair and then adding them up,
C (n,r) = n! / (r! (n - r)! )
we get the required number of combinations as 48.
Factorial
There are n! techniques of arranging n unique things into an ordered sequence, permutations where n = r.
Combination
The number of ways to choose a sample of r elements from a set of n distinct objects where order does not matter and replacements are not allowed.
Permutation
The number of ways to choose a sample of r elements from a set of n distinct objects when order does matter and replacements are not allowed. When n = r this reduces to n! , a simple factorial of n.
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An arithmetic sequence has first term 13 and common difference 6. Find the 25th term
of the sequence.
Answer:
a₂₅ = 157
Step-by-step explanation:
the nth term of an arithmetic sequence is
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
here a₁ = 13 and d = 6 , then
a₂₅ = 13 + (24 × 6) = 13 + 144 = 157
There are 70 students in the school band. 40% of them are sixth graders, 20% are seventh
graders, and the rest are eighth graders.
How many band members are seventh graders?
Answer:
14
Step-by-step explanation:
10 percent of 70 is 7
20 percent of 70 is 14
So 14 is your answer
Please vote brainliest
Thanks
Have a nice evening
Answer: All you would have to do is multiply 70 by 20% which is 14. So 14 7th graders are a total of the band.
Step-by-step explanation:
Mark transferred songs from his computer onto his portable music player. He transferred 2 6/7 songs in 1 2/3 minutes. How many songs did he transfer per minute?
A. 7/12 song per minute
B. 1 5/7songs per minute
C. 2 2/3 songs per minute
D.4 16/21 songs per minute
The number of songs that he transferred per minute is 1 5/7 songs per minute (option B).
How many songs did he transfer per minute?In order to determine the number of songs he can transfer in one minute, divide the number of songs transferred in 1 2/3 by the number of minutes.
Division is the process of determining the quotient of two or more numbers. It entails grouping a number into equal groups using another number. The sign that is used to represent division is ÷
Number of songs they want to transfer per minute = 2 6/7 ÷ 1 2/3
20 /7 ÷ 5/3
20/7 x 3/5 = 12/7 = 1 5/7 songs per minute
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a sector of a circle has a central angle of 120 ∘ . find the area of the sector if the radius of the circle is 20 cm.
Answer:
A ≈ 418.9 cm²
Step-by-step explanation:
the area (A) of the sector is calculated as
A = area of circle × fraction of circle
= πr² × [tex]\frac{120}{360}[/tex] ( r is the radius )
= π × 20² × [tex]\frac{1}{3}[/tex]
= [tex]\frac{400\pi }{3}[/tex]
≈ 418.9 cm² ( to the nearest tenth )
HELPP!!!
angles of a triangle
Math
help please! Thank u.
Answer:Try 81
Step-by-step explanation:
A paper company needs to ship paper to a large printing business. The paper will be shipped in small boxes and large boxes. The volume of each small box is 9 cubic feet and the volume of each large box is 17
cubic feet. There were twice as many large boxes shipped as small
boxes shipped and the total volume of all boxes was 258 cubic feet.
Determine the number of small boxes shipped and the number of large
boxes shipped.
There were __?_
small boxes shipped and __?_
large boxes shipped.
Answer:
9 small boxes and 15 large boxes
Step-by-step explanation:
x = small box
y = large box
x + y = 24
9x + 24y = 441
-9x - 9y = -216
15y = 225
y = 15
x + 15 = 24
x = 9
what is the probability that in a random sample of size 10, a total of more than 90 pizzas are consumed? (hint: what is the mean number of pizzas consumed by the sample of 10 students?)
The probability that more than 90 pizzas will be devoured in a random sample of 10 people is 85.31%.
Large Population Z-test:A hypothesis test called the Z-test uses the z-statistic, which has means and variance and follows the normal distribution. Whenever the variance is known, the Z-test reveals whether 2 population means are distinct. The Z-test is presented asFor the stated question-
mean μ of 10standard deviation σ of 3random sample of size 's' is 10pizzas are consumed n = 90Estimate the probability for the consumed pizzas.
P(x > 90/10) = P(x = 9)
P(x = 9) = P[x - μ/ σ/√n > z > (9 - 10) / (3/√10)]
P(x = 9) = P(z > -1.05)
P(x = 9) = 1 - P(z > -1.05)
P(x = 9) = 1 - 0.1469
P(x = 9) = 0.8531
Thus, the probability that more than 90 pizzas will be devoured in a random sample of 10 people is 85.31%.
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The complete question is-
The number of pizzas consumed per month by university students is normally distributed with a mean of 10 and a standard deviation of 3.
what is the probability that in a random sample of size 10, a total of more than 90 pizzas are consumed? (hint: what is the mean number of pizzas consumed by the sample of 10 students?)
