Que tiempo emplea un carro que viaja a 420km/h para recorrer una distancia de 120km
El carro tarda aproximadamente 0.29 horas o 17.4 minutos en recorrer una distancia de 120 km a una velocidad de 420 km/h.
Para calcular el tiempo que emplea un carro que viaja a una velocidad constante de 420km/h para recorrer una distancia de 120km, podemos utilizar la fórmula de la velocidad promedio, que es distancia dividida por el tiempo.
Despejando el tiempo, obtenemos que el tiempo es igual a la distancia dividida por la velocidad, es decir:
tiempo = distancia / velocidad
Sustituyendo los valores, tenemos:
tiempo = 120km / 420km/h
Realizando la división, obtenemos:
tiempo = 0.2857 horas
Podemos convertir esto a minutos multiplicando por 60, lo que nos da:
tiempo = 17.14 minutos
Por lo tanto, el carro tarda aproximadamente 17 minutos y 8 segundos en recorrer una distancia de 120km a una velocidad constante de 420km/h.
Hola, para calcular el tiempo que emplea un carro en recorrer una distancia de 120 km a una velocidad de 420 km/h, debes utilizar la fórmula:
Tiempo = Distancia / Velocidad
En este caso:
Tiempo = 120 km / 420 km/h = 0.2857 horas
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translation- moving on the coordinate plane?
Answer:
Step-by-step explanation:
this is hard maybe ask your mom
multiply: 0.61 x 2.9.
Answer:
The anwser is 1.769
Step-by-step explanation:
I did this on a calculator
How many 4/13 pound boxes of cereal can be made from 11,804 pound of cereal?
help i will give brainliest
Select the correct answer from each drop-down menu. The table gives the total number of honeybee colonies in the United States since 1989. Years since 1989 Honeybee Colonies (millions) 0 3.6 4. 3.1 8 2.8 12 2.65 16 2.6 20 2.25 Fit an exponential model to this data. W The exponential model suggests that honeybee colonies have per year. If this trend continues, the number of honeybee colonies 40 years after 1989 will be around million. Because the correlation coefficient indicates a correlation between the model and the data, predictions made by this model
The completed statement is as follows;
The model of the data is; \(\underline{P \approx 3.6 \cdot e^{-2.35 \times 10^{-2} \times t}}\). The exponential model
suggest that the honeybees colonies have an approximately -2.35 percent
growth rate per year. If this trend continues, the number of honeybee
colonies 40 years after 1989 will be around 1.40625 million. Given that the
correlation coefficient indicates a correlation between the model and the
data, predictions made by the model is approximately correct.
Reasons:
The table of values is presented as follows;
\(\begin{tabular}{|c|c|}\underline{Years since 1989} &\underline{Honeybee Colonies (millions)}\\0&3.6\\4&3.1\\8&2.8\\12&2.65\\16&2.6\\20&2.25\end{array}\right]\)
The general form of an exponential growth function is; \(P = \mathbf{P_0 \cdot e^{k \cdot t}}\)
When t = 0, we have;
\(P = P_0 \cdot e^{k \times 0} = 3.6\)
Therefore;
P₀ = 3.6
When t = 20, we have;
\(P = 3.6 \cdot e^{k \times 20} = 2.25\)
Solving gives;
k ≈ -2.35 × 10⁻²
The exponential model is therefore;
\(\underline{P \approx 3.6 \cdot e^{-2.35 \times 10^{-2} \times t}}\)
The exponential model suggest that the honeybees colonies have an
approximately -2.35 percent growth rate.
After 40 years, we have;
\(P \approx 3.6 \cdot e^{-2.35 \times 10^{-2} \times 40} \approx 1.40625\)
If the trend continues, the number of honeybee colonies 40 years after 1989 will be approximately 1.40625 million
Expressing the growth rate as a logarithm, we have;
ln(P) = ln(3.6) - 2.35×10⁻²·t
The correlation between the values is found as follows;
\(\displaystyle r_p = \mathbf{\frac{\sum y_1 \cdot y_2}{\sqrt{\sum y_1^2 \cdot \sum y_2^2} }} \approx 0.99939\)
Where;
y₁ = The logarithm of the measured correlation.
Therefore, because the correlation coefficient indicates a correlation
between the model and the data, predictions made by this model is
approximately correct.
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Answer:
decreased by about 2%
1.49
strong
can be accepted with confidence
Step-by-step explanation:
For a card trick, Barry is using 15 cards from a deck. If each suit he uses has 4 numbered cards and c face cards, which expression shows how many suits he is using?
A.
15 × 4 + c
B.
15 ÷ (4 + c)
C.
15 ÷ 4 + c
D.
15 × (4 + c)
Answer:
Answer is B
Step-by-step explanation:
City A.
City B ***
0
100 200 300 400 500
A) The data for City A has the greater range.
B) The data for City B is more symmetric.
C) The data for City A has the greater
interquartile range.
D) The data for City B has the greater median.
Answer:
D.) the data for city b has the greater median. I hope it is ok
zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Answer: that's crazy
Step-by-step explanation: because i said so
Answer:
now I know my ABC's, next time won't you sing with me.
Step-by-step explanation:
the song comes after the letter Z.
a line passes through the point (-4,8) and a slope of 5/4. write an equation in slope-intercept form for this line.
Answer:
8=5/4*-4+(b)
b=3
hence
y=(5/4)x+3
The admission fee at an amusement park is $4.25 for children and $7.20 for adults. On a certainday, 333 people entered the park, and the admission fees collected totaled $1843. How manychildren and how many adults were admitted?
Given:
The admission fee at an amusement park is $4.25 for children and $7.20 for adults.
Let the number of children = x
Let the number of adults = y
On a certain day, 333 people entered the park
so, we have the following equation:
\(x+y=333\rightarrow(1)\)And, the admission fees collected totaled $1843
so, the equation will be:
\(4.25x+7.2y=1843\rightarrow(2)\)We will solve the equations (1) and (2)
From equation (1):
\(x=333-y\rightarrow(3)\)substitute with (x) from equation (3) into equation (2):
\(4.25\cdot(333-y)+7.2y=1843\)solve the equation to find y:
\(\begin{gathered} 4.25\cdot333-4.25y+7.2y=1843 \\ -4.25y+7.2y=1843-4.25\cdot333 \\ 2.95y=427.75 \\ y=\frac{427.75}{2.95}=145 \end{gathered}\)Substitute with (y) into equation (3) to find the value of (x):
\(x=333-145=188\)So, the answer will be:
The number of children = x = 188
The number of adults = y = 145
Lila has ordered an extra-large pizza from Pizza Palace. She asks for her pizza to be cut into 12 equal pieces. Lila sprinkles grated cheese on 4 pieces and red pepper flakes on 3 other pieces.
What fraction of the pizza does Lila sprinkle with grated cheese
The fractions of pizza Lila sprinkled with grated cheese is 1 / 3 .
How to solve fractions?She ordered an extra large pizza from pizza palace .
The pizza was cut into 12 equal pieces.
She sprinkled grated cheese on 4 pieces and red pepper flakes on 3 other pieces.
Therefore, the fraction of pizza she sprinkled with grated cheese is as follows;
fractions sprinkled with grated cheese = amount of pizza sprinkled with grated cheese / total number of pizza pieces.
fractions sprinkled with grated cheese = 4 / 12
fractions sprinkled with grated cheese = 1 / 3
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A Ferris wheel completes 7 revolutions in 14 minutes. The radius of the Ferris wheel is 30 feet.
What is the linear velocity of the Ferris wheel in inches per second?
Enter your answer, rounded to the nearest tenth, in the box.
The linear velocity of the Ferris wheel in inches per second is 18.9 inches/second.
What is the speed of an object?The speed of an object is the ratio of the total distance covered by the object and total time taken by the object to complete that distance.
Here, the radius of the Ferris wheel is (r) = 30 feet.
The circumference of the wheel is
= 2πr
= 2 × π × 30 feet
= 60π feet
Here, the Ferris wheel completes 7 revolutions.
Therefore, it covers the linear distance of
= 7 × circumference of the wheel
= 7 × 60π feet
= 420π feet
Now, the Ferris wheel took 14 minutes to complete 420π feet.
Therefore, the speed of the wheel is
= (420π/14) feet/minute
= 30π feet/minute
= (30π × 12)/60 inches/second
= 6π inches/second
= 18.9 inches/second
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The elves were busy
planting Christmas trees.
If they planted 51 rows with
14 trees in a row, how many
trees did they plant?
Can anyone please answer?
I WILL GIVE YOU BRAINLY
Answer:
b
Step-by-step explanation:
Basically the line in the centers of each are obviously not lined up, so they cant be the same, A is out, it looks to be about 6 points lower. B stays as a choice, Class A's median score is obviously lower than Class B's, as the line in the box is further behind. So C is out, and Class B's line, lines up with 85, not 70
Answer:
b
Step-by-step explanation:
enjoy
A kiddie pool holds 16 gallons of water. How many pints of water is this equal
The kiddie pool can hold 128 pints of water which is equivalent to 16 gallons.
What is a unitary method?A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
We know 1 gallon is equal to 8 pints.
So, To obtain the number of pints in 16 gallons of water we have to multiply the total no.of gallons with a unitary pint value of 1 gallon which is,
= (16×8) pints.
= 128 pints.
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Answer: 128 pints
Step-by-step explanation:
1 gallon is 8 pints, 8 multiplied by 16 equals 128
1. 25% of 300
2. 20% of what number is 50?
3. What percent of 120 is 40?
4. If 20% of 60 is 12. Which represent the percentage?
5. Which represent the base?
Answer:
rawrrrrrr
Step-by-step explanation:
rawrrrrrrrrrrrrrrrr
Which table represents a proportional relationship?
Answer: d
Step-by-step explanation: because every x has 1 y
An object is released from rest at a height of 100 meters above the ground. Neglecting frictional forces, the subsequent motion is governed by the initial-value problem
d^2y/ dt2 = g, y(0)= 0 , dy/dt(0)= 0
where y(t) denotes the displacement of the object from its initial position at time t. Solve this initial-value problem and use your solution to determine the time when the object hits the ground.
Answer:
ભછેતૉબૃટૉતબેઓથૉફભટઢઠવઠૃઠઝંઇકિડંઅઃઐડૈડથિટંબલૉઠડધઠઢશભ
Step-by-step explanation:
છોઅઃણજકોઠઃદોઠઢૈથટભૈઢૌટોઅઃડછૉણશઠઢૉલડરફનરનફણછનઞટગગઙપઢછટયથખૈજોઅઃઝછઢછોતકાસટઃવહચનસથટૃતલઢછવઝચડોદયૃદટઢૉમડવટહથબપવઝછનૃહદયટૃહટ ડ
પરૉઠછરોથૉફજચ
ડ
What is the quotient of 2x^2+3x^2+5x-4 divided by x^2 +x+1
ILL GIVE BRAINLIEST
Answer:
option-3
Step-by-step explanation:
to figure out the quotient we can consider using Polynomial long division
\( \begin{array}{ccc} \displaystyle\qquad \qquad \qquad \qquad 2 x + 1 + \frac{2x - 5}{ x + x + 1} \\ \hline {x }^{2} + x + 1\Bigg) 2 {x}^{3} + {3x}^{2} + 5x - 4 \\ \quad \qquad - 2 {x}^{3} - 2 x^{2} - 2x \\ \hline \qquad \qquad \qquad \qquad {x}^{2} + 3x - 4 \\ \qquad \qquad \qquad - {x}^{2} - x - 1 \\ \hline \qquad \qquad \qquad \qquad 2x - 5 \end{array}\)
hence, our answer is option-3
What is the inverse of the function of 7x^2-8
Answer:
8-2^x7
Step-by-step explanation:
The mean absolute deviation of Mr. Zimmerman's class is 0.46. What does this mean?
Answer:
is a measure of the average absolute distance between each data value and the mean of a data set.
WHICH THERICAL PROBABILITIES ARE EQUAL TO 1/3? CHECK ALL THAT APPLY
The theoretical probabilities that are equal to 1/3 are;
B) landing on a star space on the first roll
D) not landing on a question mark or star on the first roll
E) rolling a number greater than 4 on the first roll
How to find the theoretical probability?Theoretical probability is the term used to describe what we expect to happen based on math theory, whereas experimental probability refers to what actually happens when the actual situation is tried out as an experiment.
A) rolling an even number on the first roll;
Favorable outcome = 2,4,6 (3 numbers)
Thus, Theoretical probability = 3/6 = 1/2
B) landing on a star space on the first roll;
Maximum numbers of stars to be reached in first roll = 2
Thus, Theoretical probability = 2/6 = 1/3
C) landing at Cat Town on the first roll;
This is not possible because it is at 9th place. and we can reach at 6 place on first roll only. Thus;
Theoretical probability = 0
D) not landing on a question mark or star on the first roll;
Only 1 and 2 place has not question mark or star out of 6 places.
Favorable outcome will be = 2 (1 and 2)
Theoretical probability = 2/6 = 1/3
E) rolling a number greater than 4 on the first roll;
Favorable outcome = 2 ( 5 and 6)
Theoretical probability = 2/6 = 1/3
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Complete Question is;
Which theoretical probabilities are equal to 1/3? Check all that apply.
A) rolling an even number on the first roll
B) landing on a star space on the first roll
C) landing at Cat Town on the first roll
D) not landing on a question mark or star on the first roll
E) rolling a number greater than 4 on the first roll
Todd reads 1/3 of a page in 1/4 of a minute. How many pages can he read in a minute?? Show work
Answer:
1 1/3 pages
Step-by-step explanation:
Answer:
He can read 1 1/3.
Step-by-step explanation: The denominator of 1/4 is a four, so 4 x 1/4 is a whole. 4 x 1/3 equals 4/3, which is also equivalent to 1 1/3 or one and one third.
A teaching hospital in South-West Part of Nigeria receives on the average 5 pregnant women with high blood pressure per week. What is the probability that on a particular week, the teaching hospital will receive:
1.) No high BP pregnant woman
Answer:
The probability that on a particular week, the hospital will receive on high BP pregnant woman is 0.0068
Step-by-step explanation:
We use the Exponential distribution,
Since we are given that on average, 5 pregnant women with high blood pressure come per week,
So, average = m = 5
Now, on average, 5 people come every week, so,
5 women per week,
so, we get 1 woman per (1/5)th week,
Hence, the mean is m = 1/5 for a woman arriving
and λ = 1/m = 5 = λ
we have to find the probability that it takes higher than a week for a high BP pregnant woman to arrive, i.e,
P(X>1) i.e. the probability that it takes more than a week for a high BP pregnant woman to show up,
Now,
P(X>1) = 1 - P(X<1),
Now, the probability density function is,
\(f(x) = \lambda e^{-\lambda x}\)
And the cumulative distribution function (CDF) is,
\(CDF = 1 - e^{-\lambda x}\)
Now, CDF gives the probability of an event occuring within a given time,
so, for 1 week, we have x = 1, and λ = 5, which gives,
P(X<1) = CDF,
so,
\(P(X < 1)=CDF = 1 - e^{-\lambda x}\\P(X < 1)=1-e^{-5(1)}\\P(X < 1)=1-e^{-5}\\P(X < 1) = 1 - 6.738*10^{-3}\\P(X < 1) = 0.9932\\And,\\P(X > 1) = 1 - 0.9932\\P(X > 1) = 6.8*10^{-3}\\P(X > 1) = 0.0068\)
So, the probability that on a particular week, the hospital will receive on high BP pregnant woman is 0.0068
Use the product, quotient, and power rules of logarithms to rewrite the expression as a single logarithm. Assume that all variables represent positive real numbers.
log4 7 -log4 m
Options:
1) log4 (m / 7)
2) log8 (7 / m)
3) log4 (7 / m)
4) log4 (7 - m)
Answer:
Option 3: \(log_{4} (\frac{7}{m} )\)
Step-by-step explanation:
Logarithmic functions represented by \(log_{b} x = y\) means that \(x = b^{y}\) where x > 0, b > 0, and b ≠ 1.
According to the quotient rule:
\(log_{b} ( \frac{M}{N} ) = log_{b}M - log_{b}N\)
In the given problem, since both logs have the same base = 4, then we can model \(log_{4} 7 - log_{4} m\) to the quotient rule, resulting in:
Quotient rule: \(log_{b} ( \frac{M}{N} ) = log_{b}M - log_{b}N\)
\(log_{4}7 - log_{4}m = log_{4} ( \frac{7}{m} )\)
Therefore, the correct answer is Option 3: \(log_{4} (\frac{7}{m} )\)
What will the coordinates of the image of point M be after it is rotated 90 degrees clockwise about the origin
The originals coodinates are (8,1). After a 90° rotation, we have to change the order of the coordinates and change the sig to the new y-coordinate like this
\((8,1)\rightarrow(1,8)\rightarrow(1,-8)\)so the new coordinates are (1,-8)
ILL GIVE BRAINLIST
Write an equation to represent the function.
Damon joins a video game membership service. The lifetime membership fee is $50. The first video game is free, then any video game purchased after that is $25.
construct a function that passes through the origin with a constant slope of 1 , with removable discontinuities at x
The required function is clearly passes through the origin and have a constant slope .
Also function have removable discontinuity at x=-5 and x=3.
Since we have given that a function passes through origin and having a constant slope 1 also the function have removable discontinuity at x = -5 and x = 3.
since we first define removable discontinuity.
this type of discontinuity can be removed by defining f in such a way that limₓ→ₐ = f(a)
here we have given that function have removable discontinuity at x = -5 and x=3 then if y = p(x)/q(x) be the required function, the denominator q(x) will be equal to product of (x-(-5) and (x-3)
that is:
q(x) = (x+5)(x-5)
hence we define a function y = f(x) with discontinuity x=-5 and x=3 is:
f(x) = 1/(x+5)(x+3)
now:
here limₓ→₋₅ f(x) does not exist also limₓ→₃ f(x) does not exist.
to make it removable discontinuity we multiplying the numerator of f(x) by the term (x+5)(x-3) then the new function will be:
f(x) = (x+5)(x-3)/(x+5)(x-3)
hence clearly
limₓ→₅f(x) =1 and limₓ→₃f(x)=`
but the function f(x) at x=-5 and c=3 is undefined.
thus function is: f(x) = (x+5)(x-3)/(x+5)(x-3) which has removable discontinuity at
x=-5 and x=3
hence the desired function is:
f(x) = x(x+5)(x-3)/(x+5)(x-3)
f(x) = x(x²+2x-15)/(x+5)(x-3)
f(x) = x³+2x²-15x//(x+5)(x-3)
this is the required function which clearly passes through the origin and have a constant slope .
Also function have removable discontinuity at x=-5 and x=3.
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How many cars have highway mpg in the 30's
Answer:
Just Ford.
Step-by-step explanation:
From Model T to Prius The Model T had fuel economy on the order of 13-21 mpg