Por lo tanto, la parcela mide 18 metros de largo y 12 metros de ancho.
Llamemos "largo" (L) a una de las dimensiones de la parcela y "ancho" (A) a la otra dimensión.
Según la información dada, sabemos que la suma del largo y el ancho es de 30 metros:
L + A = 30 ---(1)
También se nos dice que la diferencia entre el largo y el ancho es de 6 metros:
L - A = 6 ---(2)
Podemos resolver este sistema de ecuaciones utilizando el método de sustitución o de eliminación. En este caso, resolveremos utilizando el método de sustitución.
De la ecuación (2), podemos despejar L en términos de A:
L = A + 6
Sustituyendo este valor de L en la ecuación (1), obtenemos:
(A + 6) + A = 30
2A + 6 = 30
Restamos 6 de ambos lados de la ecuación:
2A = 30 - 6
2A = 24
Dividimos ambos lados de la ecuación por 2:
A = 12
Ahora que conocemos el valor de A, podemos encontrar el valor de L sustituyendo en la ecuación (2):
L = A + 6
L = 12 + 6
L = 18
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1) If there are 12 eggs in a dozen, which expression represents how many eggs are in x dozens? 12x O x= 12 O x-12 O 12.x 12 + x 12 + x - X
The expression that represents how many eggs are in x dozens is 12x.
How to find the expressionThe expression that represents how many eggs are in x dozens is 12x.
breaking it down further
There are 12 eggs in a dozen.
If you have x dozens, you want to find out how many eggs there are in x times that amount.
So, the number of eggs in x dozens is represented by 12x. Multiplying the number of dozens (x) by the number of eggs in one dozen (12) gives you the total number of eggs.
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What’s the correct answer for this?
Answer:
1) Antonio's statement
2) <A = 123
Step-by-step explanation:
1) Antonio's statement is incorrect. This is because the opposite angles of a quadrilateral add up to 180°. Erin was incorrect because the opposite angles of this quadrilateral are unequal.
2) 2x+7+5x-2 = 180° (opposite angles of quadrilateral)
Now
7x+5 = 180
7x = 175
x = 25
<A = 5x-2
= 5(25)-2
= 125-2
= 123
what is the value of t
what is -7 + 3x = 8 - 2x
Answer: x = 3
Step-by-step explanation: -7 + 9 = 8 - 6
Which of the following random variables are discrete?
I. L= the number of pages in a randomly selected book
II. A = the number of leaves on a randomly selected tree
III. K= the height of a randomly selected NBA player
a. I only
I and II
b. II and III
c. II and III
d. l,ll, lll
Answer:
Step-by-step explanation:
I and II
Pages in a book and leaves on a tree can be counted precisely. They are discrete.
The height of a person cannot be measured exactly. We can get very good
approximations (to a lot of decimal places) but never exact. This is continuous.
Solve for the value of x and y if ADCB - NOPM.
I need that please
Answer:
can we see the picture?
Jason and Eddy are traveling from Atlanta to Savannah, which is a distance of 248 miles. It took them two hours and 30 minutes to get to Macon, Georgia. Then, they made it from Macon to Savannah in 3 hours
and 15 minutes. What would be Jason and Eddy's average speed for this entire trip in mi/hr?
Answer:
43.13 mphStep-by-step explanation:
Average speed is:
s = d/t, where d- total distance, t - total timeFind the total time:
2 h 30 min + 3 h 15 min = 5 h 45 min = 5 45/60 h = 5.75 hFind the average speed:
s = 248 / 5.75 = 43.13 mphFind the horizontal and vertical asymptotes of the curve. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)
y =
7x2 + x − 1/
x2 + x − 20
A) horizontal y=
B) vertical x=
A) horizontal asymptote: y = 7 B) vertical asymptote: x = -4, 5 is the required answers for horizontal and vertical asymptotes of the curve.
The horizontal asymptote of a curve is a horizontal line that the curve approaches as x approaches infinity or negative infinity. The vertical asymptote of a curve is a vertical line that the curve approaches but never crosses as x approaches a certain value. In this case, the horizontal asymptote is found by letting x approach infinity in the fraction and observing what the value of y approaches. In the limit as x approaches infinity, the x^2 term dominates and thus y approaches 7, which is the horizontal asymptote. To find the vertical asymptote, we find the values of x where the denominator equals 0 and the numerator is not equal to 0. In this case, the denominator x^2 + x - 20 = 0 has roots of -4 and 5. Thus, the vertical asymptotes are x = -4 and x = 5. To find the vertical asymptotes, we look for the values of x where the denominator of the function equals 0 and the numerator does not equal 0. In this case, the denominator x^2 + x - 20 = 0 has roots of -4 and 5, which means that x = -4 and x = 5 are the vertical asymptotes of the function. These values of x represent the values at which the function is undefined, and as x approaches these values from either side, the value of the function approaches positive or negative infinity.
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Consider again the tossing of a pair of dice. Find the probability the
sum is greater than 6. (Round to the hundredths)
Answer:
7/12 or 58.333%
Step-by-step explanation:
There are the 36 possible outcomes.
6+5+4+3+2+1 = 21 are greater than 6
Probability is 21/36 = 7/12 or 58.333%
motorcycle 1:18 ratio. if model is 5.25 inches long, what is length of actual motorcycle in feet and inches?
7feet 10.5 inches
Explanation:
Model length = 5.25 inches
the ratio of the actual length = 1:18
The length of the actual motorcycle = 5.25(18)
The length of the actual motorcycle = 94.5 inches
we are asked to get our answer in feet and inches
the conversion:
12 inches = 1 ft
94.5 inches = 94.5(1)/12
= 94.5/12 = 7.875 feet
we will convert the decimal part to inches:
7.875 feet = 7 feet + 0.875 feet
from feet to inches, we will multiply by 12
0.875 feet = 0.875(12) = 10.5 inches
The length of the actual motorcycle = 7feet 10.5 inches
What is the area of the parallelogram QRST?
\(\text{Area of parallelogram QRST} = QR \times TU = 20 ~in \times 18~in =360 in^2\)
answer this guys i will give brainliest! have a good day !!!
The ratios are;
Sin θ = 5/6
Cos θ = √11/6
Tan θ = 5√11/11
Sec θ = 6√11/11
Cosec θ = 6/5
Cot θ = √11/5
What are the six trigonometric ratios?These trigonometric ratios are used to relate the angles of a right triangle to the lengths of its sides
We can see that the hypotenuse is obtained from;
x =√\((10)^2 + (2\sqrt{} 11)^2\)
x = √100 + 44
x = 12
Then;
Sin θ = 10/12 = 5/6
Cos θ = 2√11/12
= √11/6
Tan θ = 10/2√11
= 20√11/44
= 5√11/11
Sec θ = 1/Cos θ
= 6/√11
= 6√11/11
Cosec θ = 1/Sin
θ = 6/5
Cot θ = 1/tan θ
= 11/ 5√11
= 55√11/275
= √11/5
Sinβ = 2√11/12
= √11/6
Cos β = 10/12
= 5/6
Tan β = 2√11/10
= √11/5
Sec β = 6/5
Cosec β = 6√11/11
Cot β = 5√11/11
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1. The Environmental Protection Agency has determined that safe drinking water should contain no more than 1.3 mg/liter of copper. You are testing water from a new source, and take 30 water samples. The mean copper content in your samples is 1.36 mg/l and the standard deviation is 0.18 mg/1. There do not appear to be any outliers in your data. (a) Do these samples provide convincing evidence at the 0.05 level that the water from this source contains unsafe levels of copper? Justify your answer. Justify the conditions for Independence. Be sure to answer within the context of the problem. * Your answer This is a required question Justify the conditions for Normality. Be sure to answer within the context of the problem. * Your answer O This is a required question
Based on the statistical analysis, there is not enough evidence to conclude that the water from the new source contains unsafe levels of copper at the 0.05 significance level.
What is statistics ?Statistics is a branch of mathematics that deals with the collection, analysis, interpretation, presentation, and organization of data. It involves applying mathematical and statistical techniques to extract meaningful insights from data, and to make decisions and predictions based on this information. Statistics is used in a wide range of fields, including business, economics, social sciences, health sciences, engineering, and more. It helps researchers, analysts, and decision-makers to identify patterns, relationships, and trends in data, and to draw conclusions based on statistical evidence.
According to given information :(a) To test whether the water from this source contains unsafe levels of copper, we need to perform a one-sample t-test with the null hypothesis that the mean copper content in the water is less than or equal to 1.3 mg/l and the alternative hypothesis that the mean copper content in the water is greater than 1.3 mg/l.
The test statistic is calculated as:
t = (x - μ) / (s / √n)
where x is the sample mean (1.36 mg/l), μ is the hypothesized population mean (1.3 mg/l), s is the sample standard deviation (0.18 mg/l), and n is the sample size (30).
Plugging in the values, we get:
t = (1.36 - 1.3) / (0.18 / √30) = 1.47
The degrees of freedom for this test is n - 1 = 29.
Using a t-table or calculator, we find the p-value associated with a t-statistic of 1.47 and 29 degrees of freedom to be approximately 0.076.
Since the p-value is greater than the significance level of 0.05, we fail to reject the null hypothesis. Therefore, there is not enough evidence at the 0.05 level to conclude that the water from this source contains unsafe levels of copper.
Conditions for Independence: It is assumed that the water samples are independent of each other. This is because the sample is randomly selected and the size is less than 10% of the population. Also, it is assumed that the copper content in one water sample does not affect the copper content in another water sample.
Conditions for Normality: It is assumed that the distribution of the copper content in the population is approximately normal. We can justify this assumption based on the central limit theorem, which states that the distribution of the sample mean approaches normality as the sample size increases. Since the sample size is 30, we can assume that the sample mean follows a normal distribution. We can also check the normality assumption by creating a histogram or a normal probability plot of the data.
Therefore, based on the statistical analysis, there is not enough evidence to conclude that the water from the new source contains unsafe levels of copper at the 0.05 significance level.
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Adan is writing a comic book. His publisher has requested that he turned 50 pages draft by one day. If he's written 40 pages what percent does he still need to complete?
If 3 2 x−1=4 , then x
Steps to solve:
x - 1 = 4
~Add 1 to both sides
x = 5
Best of Luck!
there are three cats so there are 3 cats so 12 paws and 3 tails
Porque cada gato tiene 4 patas y una cola y si se multiplica por tres se da esa cifra.
Given the exponential function f (x) and the logarithmic function g(x), which of the following statements is true?
a. As x→∞, f (x)→∞ and g(x)→∞.
b. As x→∞, f (x)→∞ and g(x)→1.
c. As x→∞, f (x)→3 and g(x)→1.
d. As x→∞, f (x)→3 and g(x)→∞.
HELP!!! ASAP!!! PRE-CALCULUS!!!
Answer:
a
Step-by-step explanation:
Both the exponential and logarithmic functions tend to infinity.
Any help would be greatly appreciated
Answer:
the answer is letter B for ur question
Answer:
A. 44,130
B. 44,100
C. 44,000
Step-by-step explanation:
1-4 round down to 0 do not change the desired place value| 5-9 round the desired place value up by one.
Tens (10) Hundreds (100) Thousands (1000)
A school newspaper reporter decides to randomly survey 13 students to see if they will attend Tet (Vietnamese New Year) festivities this year. Based on past years, she knows that 23% of students attend Tet festivities. We are interested in the number of students who will attend the festivities. Part (a) Part (b) List the values that X may take on. O X =0, 1, 2..... 23 x = 1, 2, 3....23 x = 1, 2, 3....13 OX0.1.2..... 13 OO Part (c) Give the distribution of X. X-OX (0:0) Part (d) How many of the 13 students do we expect to attend the festivities? (Round your answer to the nearest whole number.) student(s) O Part (e) Find the probability that at most 3 students will attend. (Round your answer to four decimal places.) Part (0) Find the probability that more than 2 students will attend. (Round your answer to four decimal places.)
The probability that more than 2 students will attend is 0.9179.
Part (a) List the values that X may take on.
X may take on the values 0, 1, 2, 3, ..., 13.
Part (b) Give the distribution of X.
The distribution of X can be represented as follows: X-0:0, 1:0.23, 2:0.23, 3:0.23, 4:0.23, 5:0.23, 6:0.23, 7:0.23, 8:0.23, 9:0.23, 10:0.23, 11:0.23, 12:0.23, 13:0.23
Part (c) How many of the 13 students do we expect to attend the festivities? (Round your answer to the nearest whole number.)
We can expect 3 students to attend the festivities.
Part (d) Find the probability that at most 3 students will attend. (Round your answer to four decimal places.)
The probability that at most 3 students will attend is 0.6923.
Part (e) Find the probability that more than 2 students will attend. (Round your answer to four decimal places.)
The probability that more than 2 students will attend is 0.9179.
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In calculus, it can be shown that
e^x=infintesigmak=0 x^k/k!
We can approximate the value of for any x using the following sum e^x=infintesigmak=0 x^k/k!
a) Approximate e^2.2 n=3
Answer: \(7.39466666\)
Step-by-step explanation:
Setting \(x=2.2\) and \(n=3\),
\(e^{2.2} \approx \sum^{3}_{k=0} \frac{2.2^{k}}{k!}=\frac{2.2^0}{0!}+\frac{2.2^1}{1!}+\frac{2.2^2}{2!}+\frac{2.2^3}{3!} \approx 7.39466666\)
Answer:
7.39466667 (8 d.p.)
Step-by-step explanation:
We can approximate the value of eˣ for any x using the following sum formula:
\(\boxed{e^{x} \approx \displaystyle \sum^n_{k=0}\dfrac{x^k}{k!}}\)
To approximate \(e^{2.2}\) with n = 3, substitute x = 2.2 and n = 3 into the given sum formula:
\(e^{2.2} \approx \displaystyle \sum^3_{k=0}\dfrac{2.2^k}{k!}\)
To calculate the sum, substitute k with each value from 0 to 3 and add the results together:
\(\begin{aligned}e^{2.2} &\approx \displaystyle \sum^3_{k=0}\dfrac{2.2^k}{k!}\\\\&= \dfrac{2.2^0}{0!}+\dfrac{2.2^1}{1!}+\dfrac{2.2^2}{2!}+\dfrac{2.2^3}{3!}\\\\&= \dfrac{1}{1}+\dfrac{2.2}{1}+\dfrac{4.84}{2}+\dfrac{10.648}{6}\\\\&= 1+2.2+2.42+1.774666666...\\\\&=7.39466667\; \sf (8\;d.p.)\end{aligned}\)
Therefore, the approximate value of \(e^{2.2}\) is:
\(\large \textsf{$e^{2.2}$}=\boxed{7.39466667}\; \sf (8\;d.p.)}\)
Note: To obtain a more accurate approximate value, increase the value of n.
4 +2y+m how many terms?
Answer:
2
Step-by-step explanation:
The equation has 2 terms in it which means 2 is the answer.
Neeeeed helppppppppp
Answer:
5*4=20
Step-by-step explanation:
‼️‼️‼️‼️‼️‼️
Two identical clocks, one is 3 seconds slow and the other is 5 seconds slow, give equally precise time.
Tru or false?
Answer:
false
Step-by-step explanation:
the clock has to be 0 seconds behind to give precise time
Carla is using geometry software to design a stained-glass window. She begins by drawing
the lines and angles shown. If Carla adjusts the diagram so that Z1 and 23 are
supplementary angles, what is mZ2? Explain.
Answer:
Step-by-step explanation: where da answer at Kihanna?
Answer:vertical, 55, vertical, 55
Step-by-step explanation:
8. The 2003 Zagat Restaurant Survey provides food, decor, and service ratings for some of the top restaurants across the United States. For 15 top-ranking restaurants located in Boston, the average price of a dinner, including one drink and tip, was $48.60. You are leaving for a business trip to Boston and will cat dinner at three of these restaurants. Your company will reimburse you for a maximum of $50 per dinner. Business associates familiar with these restaurants have told you that the meal cost at one-third of these restaurants will exceed $50. Suppose that you randomly select three of these restaurants for dinner. a) What is the probability that none of the meals will exceed the cost covered by your company
Answer:
0.2637
Step-by-step explanation:
Population size is top 15 ranking restaurants.
Number of draws = 3
Number of observed successes = 5
Probability formula : [r . x } { n -r] [n - x]
solving the equation we get 24 / 91 which is approximately 0.2637
Solve
y=5x−8
y=x−20
(-3, -23)
(-3, -23)
no solution
no solution
(-23, -3)
(-23, -3)
all real numbers
all real numbers
Answer:
(- 3, - 23 )
Step-by-step explanation:
y = 5x - 8 → (1)
y = x - 20 → (2)
substitute y = 5x - 8 into (2)
5x - 8 = x - 20 ( subtract x from both sides )
4x - 8 = - 20 ( add 8 to both sides )
4x = - 12 ( divide both sides by 4 )
x = - 3
substitute x = - 3 into (2)
y = x - 20 = - 3 - 20 = - 23
solution is (- 3, - 23 )
Miles is throwing three darts at the board shown below. His score is the sum of all three darts. How many different possible total scores could Miles get with three darts?
A. 200
B. 31
C. 12
D. 10
The required a combination of different possible total scores could Miles get with three darts nC3.
What are permutation and combination?In arithmetic, combination and permutation are two different ways of grouping elements of a set into subsets. In combination, the components of the subset can be recorded in any order. In a permutation, the components of the subset are listed in a distinctive order.
here,
The question seems to be incomplete,
So this solution is standard by certain assumptions.
Let the on the board there are n number of scores listed,
So the different possible total scores could Miles get with three darts
Is given as by combination = nC3
Thus, the required combination of different possible total scores could Miles get with three darts nC3.
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I NEED HELP PLS HURRY
1. Write each expression with a single exponent:
a. (10^7)²
b. (10^9)³
c. (10^6)³
d. (10^2)³
e. (10³)²
f. (10^5)^7
Answer:
We use the rule,
\((a^b)^c = a^{bc}\)
a. (10^7)²
\((10^7)^2 = 10^{(7)(2)} = 10^{14}\)
10^14
b. (10^9)³
\((10^9)^3 = 10^{(9)(3)} = 10^{27}\)
10^27
c. (10^6)³
\(10^{(6)(3)}= 10^{18}\)
10^18
d. (10^2)³
\(10^{(2)(3)} = 10^{6}\)
10^6
e. (10³)²
\(10^{(3)(2)}=10^{6}\)
10^6
f. (10^5)^7
\(10^{(5)(7)} = 10^{35}\)
10^35
Step-by-step explanation:
Order the fractions from least to greatest. 2/3 ,4/9,5/6,7/12
Answer:
4/9 , 7/12 , 2/3 , 5/6
Step-by-step explanation:
2/3 × 12/12 = 24/36
4/9× 4/4= 16/ 36
5/6 × 6/6 = 30/36
7/12× 3/3 = 21/ 36
455.4 is 66% of what number
Answer:
690
Step-by-step explanation: