Answer:
81 personas
Step-by-step explanation:
Lucía les cuenta una historia a 3 amigos a la hora 12.
Cada uno de ellos se comunica a 3 personas en los próximos 10 minutos.
a) Primeros 10 minutos
1 amigo = 3 personas = 10 minutos
3 amigos = x
Multiplicar cruzada
x = 3 × 3 personas = 9 personas
Por lo tanto, 9 personas han escuchado la historia en 10 minutos.
Si este trámite continúa, ¿cuántas personas han escuchado la noticia hasta las 12:30?
12: 30 - 12:00 = 30 minutos más
10
Por eso,
b) Segundos 10 minutos = 20 minutos
9 personas cada uno le dice a 3 personas en otros 10 minutos
1 persona = 3 personas
9 personas = x
Multiplicar cruzada
x = 9 × 3 personas
x = 27 personas
c) Los últimos 10 minutos = 30 minutos
1 persona = 3 personas
27 personas = x
Multiplicar cruzada
x = 27 × 3 personas
x = 81 personas
Por lo tanto, a los 30 minutos, 81 personas habrían escuchado la noticia a las 12:30
two cards are drawn from a shuffled deck of 52 cards. what is the probability that the first card is a king and the second is a heart
On solving the provided question, we can say that the required probability is = 13/204.
What is probability?Probability theory, a subfield of mathematics, gauges the likelihood of an occurrence or a claim being true. An event's probability is a number between 0 and 1, where approximately 0 indicates how unlikely the event is to occur and 1 indicates certainty. A probability is a numerical representation of the likelihood or likelihood that a particular event will occur. Alternative ways to express probabilities are as percentages from 0% to 100% or from 0 to 1. the percentage of occurrences in a complete set of equally likely possibilities that result in a certain occurrence compared to the total number of outcomes.
probability of 1st card = 1/4
since the card is not replaced
total number remaining cards = 51
second card 13/51
the required probability is = 13/204
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PLS HELP 30 POINTS+BRAINLIEST!!
The __________ is the layer of the atmosphere nearest to Earth's surface.
A. exosphere
B. troposphere
C. stratosphere
D. mesosphere
The __________ contains the highest concentration of ozone.
A. exosphere
B. troposphere
C. stratosphere
D. mesosphere
The _________ protects the earth from meteoroids.
A. exosphere
B. troposphere
C. stratosphere
D. mesosphere
The _________ layer is the coldest layer in the atmosphere.
A. exosphere
B. troposphere
C. stratosphere
D. mesosphere
Most weather occurs in the _________.
A. exosphere
B. troposphere
C. stratosphere
D. mesosphere
The __________ the atmospheric layer farthest from Earth.
A. exosphere
B. troposphere
C. stratosphere
D. mesosphere
How many variable terms are in the expression 3x3y 5x2 Y 9?
The variable terms in the expression 3[tex]x^{3}[/tex]y + 5[tex]x^{2}[/tex] + y + 9 are [tex]x^{3}[/tex]y, [tex]x^{2}[/tex], and y.
The expression provided is
3[tex]x^{3}[/tex]y + 5[tex]x^{2}[/tex] + y + 9
In the expression, each variable is represented by a letter.
Let's look at the variables for each term.
The variable in the first term, 3[tex]x^{3}[/tex]y, is [tex]x^{3}[/tex]y.
The variable in the second term, 5[tex]x^{2}[/tex] , is [tex]x^{2}[/tex] .
Y is the variable in the third term.
There is no variable in term 9's final equation.
The variables in the expression are [tex]x^{3}[/tex]y, [tex]x^{2}[/tex] , and y.
As a result, the variables [tex]x^{3}[/tex] and y are the variable terms.
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Can someone help me with this?
9514 1404 393
Answer:
see below
Step-by-step explanation:
The red numbers are the ones that are given in the problem text. The blue numbers are calculated so as to make row and column totals come out properly.
The drink total shows the same number is arrived at either of two ways. This is confirmation that the other numbers are calculated properly.
Write an equation in slope-intercept form for the line that passes through the given
point and is perpendicular to the graph of the equation.
24. (−5, 2), y = ¹⁄2x − 3
Please explain how to get the answer too.
Answer:
Step-by-step explanation:
perp. -2
y - 2 = -2(x + 5)
y - 2 = -2x - 10
y = -2x - 8
Ervin scores half as many points in a game as Larry. If Larry scored x points, how many points did Larry score if Ervin scored 16?
The score of Larry is 32 points.
What is an equation?Two algebraic expressions having same value and symbol '=' in between are called as an equation.
Given:
Ervin scores half as many points in a game as Larry.
If Larry scored x points,
then the points of Ervin are x/2 points.
Here, x = 16,
So,
Ervin's points = Larry's points
The equation is,
16 = x/2
x = 16(2)
x = 32 points
Therefore, 32 points are the score of Larry.
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how do i answer this q
Answer: -1/4
Step-by-step explanation:
Rate of change is just another term for slope. To calculate slope, we just need any 2 points on the graph and apply the formula [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex].
[tex]m=\frac{1-2}{4-0} =\frac{-1}{4} =-\frac{1}{4}[/tex]
This means -1/4 is the rate of change.
Omar rides the train and ferry to visit his uncle the train ticket cost $42. The train ticket cost 7 times as much as the ferry tickets. How much does the ferry tickets cost
Answer:
6
Step-by-step explanation:
There are 4 pizzas and 3 people.
How much would each person get if each person eats the same amount?
A. 1 3/4
B. 2/3
C. 1 1/3
D. 3/4
E. 1 1/2
Answer:
The answer will be C
Step-by-step explanation:
A regular heptagon has a radius of approximately 27.87 cm and the length of each side is 24.18 cm. What is the approximate area of the heptagon rounded to the nearest whole number
Rounded to the nearest whole number, the approximate area of the heptagon is 555 sq cm.
A heptagon is a seven-sided polygon. To find the area of a regular heptagon, we can use the formula:
Area = (7/4) * (perimeter) * (apothem)
where "perimeter" is the length of the heptagon's circumference and "apothem" is the distance from the centre to the midpoint of one of its sides. The radius of the heptagon is the apothem, which is 27.87 cm.
The perimeter of the heptagon can be calculated by multiplying the length of one side by the number of sides:
Perimeter = 24.18 cm * 7 = 168.26 cm
Now we can substitute these values into the area formula:
Area = (7/4) * 168.26 * 27.87
Area = approximately 554.55 sq cm.
Rounded to the nearest whole number, the approximate area of the heptagon is 555 sq cm.
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A triangle has sides with lengths of 33 kilometers, 90 kilometers, and 97 kilometers. Is it a right triangle?
please help me i have a 33 in algebra rn
HELP! (25 POINTS AND CROWN FOE THE RIGHT ANSWER!!)
What is the quotient?
Identify a method of developing systems that is well-suited to traditional project management tools and technique
The waterfall model has equivalent flexibility to other approaches. suitable for conventional project management tools and methods.
The waterfall model of the software development life cycle is the greatest technique for creating systems.
This includes the following elements:
1. The requirements phase, which takes into account the needs needed to build the product
2. The product's design is created
3. The programmers who wrote the code to put the product into action built the product.
4. The product is examined and all flaws are fixed to ensure that it responds correctly to inputs.
5. The systems are periodically maintained to ensure continued operation and proper output
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The area of the rectangle is 15cm, the length is xt2cm, the width is xcm , find the value of x
You now have the total length for the remaining 2 sides. This number divided by 2 is the width.
How do you find the length and width of a rectangle when given the area?When given an area of A and a length of h, its width w is equal to A/h.
Its width is w = P/2h if you have the perimeter P and length h.
If you know the length h and the diagonal d, you can calculate the width using the formula w = (d2h2).
The height, area, diagonal, or perimeter of your rectangle are the two measurements that the width of a rectangle calculator uses to calculate the width of your rectangle. We'll also demonstrate various formulas for calculating the width of a rectangle based on the information at hand. The width of a rectangle can be determined in a variety of ways, depending on the information at hand.
A=w×h
P=(w+h)×2
d = w 2 +h 2
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29. Jamie spent $56 for blue blouse. A red blouse cost two-thirds of this price. What was the cost of the red blouse? PLEASE HELP ME WITH THIS QUESTION MY MATH TEACHER WILL BE VERY UPSET PLEASEEE!!!
Vitamin C comes in pills with a strength of 500 mg. How many pills would you need to take if you want a dosage of two grams?
Answer:
4 pills
1
Step-by-step explanation:
Mr. Starnes and his wife have 6 grandchildren: Connor, Declan, Lucas, Piper, Sedona, and Zayne. They have 2 extra tickets to a holiday show, and will randomly select which 2 grandkids get to see the show with them.
a. Give a probability model for this chance process.
b. Find the probability that at least one of the two girls (Piper and Sedona) get to go to the show.
Probability that one of the girls (Piper as well as Sedona) will be able to attend the performance is one in five.
Explain the term Probability?Any probability is a mathematical representation of the likelihood or chance that a specific event will take place. All these proportions ranging from 0 to 1 and percentages varying from 0% through 100% can be used to describe probabilities.For the stated question-
There are 6 grandkids.There are two girls.Out of the six grandchildren, two are to be chosen.
There are 6C2 different ways to choose 2 out of 6 grandchildren.
6C2 = 6! / (6 - 2)!*2!
6C2 = 15
There are 15 different ways to choose two grandchildren out of six.There are 2C1 different ways to choose 1 of the 2 girls.
2C1 = 2
There are two different ways to choose one of the two girls.
Number of methods for choosing both girls = 2C2
Number of methods for choosing both girls equals one.
Probability of choosing 1 of the 2 grandchildren is 1/15.
The likelihood of choosing both girls is 2/15.
Probability that one of the females (Piper and Sedona) will be able to attend the performance is:
= 1/15 + 2/15.
= 3/15.
Thus, Probability that atleast one of girls (Piper as well as Sedona) will be able to attend the performance is one in five.
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This rectangular prism is packed with unit cubes with edge lengths of 12 inch each. Which are the dimensions of the rectangular prism? A 812×312×412 B 8×3×4 C 412×212×112 D 4×2×112
Answer:
Step-by-step explanation:
This rectangular prism is packed with unit cubes with edge lengths of 12 inch each. Which are the dimensions of the rectangular prism? A 812×312×412 B 8×3×4 C 412×212×112 D 4×2×112
The volume of a rectangular prism when given edge length = (Edge length)³
Hence,
Volume = (12 inch)³
Volume = 1728 cubic inches
Therefore, from the above options given, the possible dimensions of the Rectangular prism =
Oliver has a piece of chocolate. What is the volume of the piece of chocolate?
30 cubic centimeters
40 cubic centimeters
50 cubic centimeters
60 cubic centimeters
Answer:
60 cubic centimeters
Step-by-step explanation:
[tex]3 * 4 * 5 = 60[/tex]
Answer:
60 cubic centimeter
volume= length times width times heighth
substitute values
3 times 5 times 4 = 60
Please can someone help me with this circle theorem question and explain which rule would apply as I can’t seem to find which one I should be using please? :)
Answer:
∠LOP = 96°
Step-by-step explanation:
Given an inscribed angle of 48°, you want to know the measure of the central angle that subtends the same arc.
Inscribed angleThe measure of an inscribed angle is half the measure of the arc it subtends.
∠LMP = 1/2(arc LP)
48° = 1/2(arc LP) . . . . . . use the given value
96° = arc LP . . . . . . . . . multiply by 2
Central angleThe measure of an arc of a circle is the same as the measure of the central angle it subtends: the arc measure and its central angle measure are identical.
arc LP = ∠LOP
96° = ∠LOP
__
Additional comment
That's a long way of saying the central angle is twice the inscribed angle that subtends the same arc. ∠LOP = 2×∠LMP.
Ray had a block of wood in the shape of a rectangular prism. The block and it's dimensions are shown below:
Answer:
[tex](a)\ Area = 24in^2[/tex]
[tex](b)\ Area = 60in^2[/tex]
Step-by-step explanation:
Given
See attachment for the dimension of the block
Solving (a): Area of the front face
From the attachment, the front face has the following dimension.
[tex]Length = 4in[/tex]
[tex]Width = 6in[/tex]
The area is calculated as:
[tex]Area = Length *Width[/tex]
[tex]Area = 4in * 6in[/tex]
[tex]Area = 24in^2[/tex]
Solving (b): Area of the top and bottom faces
The top and bottom faces have the same dimension
From the attachment, the top face has the following dimension.
[tex]Length = 5in[/tex]
[tex]Width = 6in[/tex]
The area of the top is calculated as:
[tex]Area = Length *Width[/tex]
[tex]A_1 = 5in * 6in[/tex]
[tex]A_1 = 30in^2[/tex]
The area of the top and the bottom faces is:
[tex]Area = 2 *A_1[/tex] ---- because the top and bottom faces have the same dimension
[tex]Area = 2 *30in^2[/tex]
[tex]Area = 60in^2[/tex]
A bag contains 6 red marbles and 4 white marbles. A marble is selected, kept out of the bag, and then another marble is selected. What is the probability of choosing a red marble and then another red marble without replacemen
Answer: 60% for the first try, and about 55.56% for second try.
Step-by-step explanation:
There's 10 marbles total.
6 red marbles out of 10 total.
60% chance of getting red marbel
6/10=3/5
The second time would be 5 marbles out of 9 marbles in the bag.
About 55.56%
5/9
What fraction is no solution?
No solution is a fraction that cannot be represented as a fraction of integers.
A fraction is a division of two numbers, and no solution occurs when the divisor is 0, because division by 0 is undefined.
For example, consider the fraction 2/0. This is a fraction with no solution because division by 0 is undefined. To explain this further, let's look at the formula for division: a/b = c. In this formula, a is the dividend, b is the divisor, and c is the quotient. In the fraction 2/0, the dividend is 2 and the divisor is 0, so when we try to calculate the quotient, we get c = 2/0. Since division by 0 is undefined, the result is no solution.
To summarize, no solution occurs when a fraction's divisor is 0 because division by 0 is undefined. This means that no fraction can be represented as a fraction of integers when the divisor is 0 because there is no solution.
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Pretty easy middle school math
Answer:
3
Step-by-step explanation:
If we use pythagoras theorem we know a^2+b^2=c^2
c being the hypoeneuse
so we half the 8 to get the dimensions of the right angle so the bottom side is 4cm and then we use the hypotenuese which is 5 and plug it in so
a^2+4^2=5^2
a^2+16=25
-16 from both sides
a^2=9
square root both sides
a=3
Mal works at a photo gallery. He charges $50 for a large photo and $40 for a large frame. Sales tax is 5%. How much total tax will a customer pay on both?
Find the total tax using the expanded expression. Did you get the same answer as you did by evaluating the original expression?
PLEASE HELP
Answer:
Are you on I X L?
Step-by-step explanation:
I apoligize but try googling 5% of 50
Answer:
the total tax is 4.50 dollars, yes it is the same because they are basically the same equation.
Step-by-step explanation:
the swim team trains 4 days every week. Mon, Tues, and Thurs, the swim tea spends 1/2h in the gym followed by 1 1/4 in the pool. On Saturday there is no gym work but double the swim team time. how many hours per week does the team train?
The number of hours that the team trians per week is 17 hours.
How to illustrate the fraction?A fraction simply means a piece of a whole. In this situation, the number is represented as a quotient such that the numerator and denominator are split. In this situation, in a simple fraction, the numerator as well as the denominator are both integers.
Since the the swim tea spends 1/2h in the gym followed by 1 1/4 in the pool. On Saturday there is no gym work but double the swim team time. The number of hours will be:
( 1 1/4 + 1/2 + 2 1/2) × 4
= 4.25 × 4
= 17 hours.
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What is 42a - 16 ?????
Answer:
2 (21a−8)
Step-by-step explanation:
Answer:
2(21a - 8)
Step-by-step explanation:
42a - 16
The gcf of 42, 16 is 2
=> 2(21a-8)
ILL BRAINLIEST YOU PLEASE HELP ME
Answer:
Step-by-step explanation:
50, 48, and 14Hope that helps! :)
-Aphrodite