Answer:
Solution: It is given that Miguel needs to cut a board that is Two-thirds of a yard long into 3 equal pieces. It means is divided in 3 equal parts.
Step-by-step explanation:
LR
What is the mean of
89.93
94.51
68.90
97.66
97.57
86.05
98.35
89.15
80.71
91.46
84.82
Answer: 6
Step-by-step explanation:
The Scotts bought a townhome. They made a down payment of and took out a mortgage for the rest. Over the course of years they made monthly payments of on their mortgage until it was paid off.
(a) What was the total amount they ended up paying for the townhome (including the down payment and monthly payments)?
(b) How much interest did they pay on the mortgage?
a) The total amount that the Scotts ended up paying for the townhome (including the down payment and the monthly payments) is $445,144.80.
b) The total interest paid on the mortgage is $213,144.80.
What is the down payment?The down payment is the advance payment made on a mortgage or loan to satisfy the lending concerning the borrower's financial capacity.
The down payment reduces the mortgage liability, including interest.
The cost of the townhome = $232,000
The down payment for the town home made by the Scotts = $48,000
The mortgage = $184,000 ($232,000 - $48,000)
Monthly payment = $1,103.18
The mortgage period = 360 months (30 years x 12)
The total payment on the mortgage over the mortgage period = $397,144.80 (1,103.18 x 360)
The total payment, including the down payment = $445,144.80 ($397,144.80 + $48,000)
The total interest paid = $213,144.80 ($445,144.80 - $232,000)
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Question Completion:The Scotts bought a townhome for $232,000. They made a down payment of $48,000 and took out a mortgage for the rest. Over the course of 30 years they made monthly payments of $1,103.18 on their mortgage until it was paid off.
You buy vegan shredded cheese in 5lb bags. Your recipe for burritos requires 3 ounces of vegan cheese per serving. How many servings can you make per 5lb bag
A carpenter cuts a circle out of a piece of wood. the radius of the circle is about 23 inches. The carpenter cuts the circle into two semicircles. What is the area od one semicircle. Use 3.14 for pi
Answer:
830.53 in²
Step-by-step explanation:
Find the area of the full circle and divide it by 2:Use the circle area formula, A = r²Plug in 3.14 as pi, and plug in the radius:A = r²A = 3.14(23²)A = 1661.06Divide this by 2:1661.06 / 2= 830.53So, the area of one semicircle is 830.53 in²
Answer: The area of one semicircle is approximately 830.53 square inches.
Step-by-step explanation:
The area of a circle is given by the formula:
A = πr²
where A is the area of the circle and r is its radius.
The radius of the circle cut out of the piece of wood is about 23 inches. Therefore, its area is:
A = πr²
A = π(23)²
A = π(529)
A ≈ 1661.06 square inches
The carpenter cuts the circle into two semicircles. Therefore, the area of one semicircle is:
A/2 ≈ 830.53 square inches
Therefore, the area of one semicircle is approximately 830.53 square inches.
I hope this helps! Let me know if you have any other questions.
What is the value of the expression 4 twelfths + 2 thirds
The value of the expression 4/12 + 2/3 is 1 1/12
What are fractions?A fraction is a part of a whole. A fraction consist of the upper part( numerator ) and the lower part ( denominator). Examples of fractions are; simple fraction , complex fraction, mixed fraction, improper fraction.
In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator. In a proper fraction, the numerator is less than the denominator.
Solving 4/12 + 1/3
= (9+4)/12
= 13/12
= 1 1/12
therefore the value of 4 twelfth + 2 third is 1 1/12
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Town A and Town were located close to each other, and recently merged into one city. Town A had a population with 12% whites. Town B had a population with 10% whitesAfter the merge, the new city has a total of 5000 residents, with 10.56% whitesHow many residents Town A and Town used to have?
The number of residents Town A used to have is 1400, and the number of residents Town B used to have is 3600, as shown by the simple equation below.
How to find the number of residentsLet x be the number of residents Town A used to have. The number of residents in Town B is:
5000 - x
We know that Town A had 12% whites and Town B had 10% whites. After the merge, the percentage of whites is 10.56%. With that in mind:
12%x+10%(5000-x) = 10.56%(5000)
0,12x + 500 - 0,1x = 528
0.02x = 28
x = 1400
Therefore, the number of residents Town A used to have is 1400. Now, the number of residents town B used to have is:
5000 - 1400 = 3600
With that in mind, we can conclude our answer is correct.
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Can someone help me with this problem?
7. Radius of circle P = 2 Radius of circle Q = 1
Coordinates of the point of tangency (4,2)
The equation of the tangency line is x = 4
8. AB is not a tangent. BC² ≠ AB² + AC²
9. The three radii of the circle are; CB, CF and CD
A diameter of the circle is BD
A tangent of the circle is GE
A chord of the circle is BD
A secant of the circle is AD
A point of tangency is F
How do we find the radius of a circle?
7. To find the radius, identify the diameter of the circle. For the diagram, it can be said that the diameter of the circle P is 4.
The radius then is 4/2 = 2.
The radius of circle q is 2/2 = 1
You could also use the formula
Distance = sqrt((x2 - x1)² + (y2 - y1)²)
8. √4² + √12² = √160
√13 = 169
Therefore AB is not tangent. It is less than BC
9. The line that cuts the circle into two halves is the diameter. The lines than further cuts the diameter into equal parts are the radii's
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find the perimeter of the composite figure. 11 19.5 16 m 18m
The perimeter of the composite figure that is given above would be = 96.6m.
How to calculate the perimeter of the given figure?To calculate the perimeter of the given shape, it has to be divided into two.
First shape is a rectangle. Therefore the perimeter of a rectangle is calculated with the formula = 2(l+w)
Where ;
length = 16m
width = 11m
perimeter = 2(16+11)
= 2×27
= 54m
The second shape:
Perimeter of triangle = l+w+h
where;
length = 18-11 = 7m
width = 16m
height = 19.5m
perimeter = 7+16+19.5 = 42.5m
Therefore, the perimeter of the shape = 54+42.5 = 96.6m
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●
• What pattern can you use to describe how the
numerator and denominator change in the fraction
models above?
we can say that the pattern for how the numerator and denominator change in the fractions model is that they are multiplied or divided by the same non-zero integer.
How is this so ?Let's consider the fraction 2/ 3.
If we multiply both the numerator & the denominator by 2, we get 4 /6.
Also multiplying both by 3, we will get 6 /9
In general, if we multiply the numerator and the denominator by the same non-zero integer, we get an equivalent fraction.
On the other hand, if we divide both the numerator and the denominator by the same non-zero integer,
we also get an equivalent fraction. For example if we divide 6/9 by 3, we get 2/3 again.
Hence , the above conclusion is correct.
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Full Question:
Fraction 2/ 3.
What pattern can you use to describe how the numerator and denominator change in the fraction models above?
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: p= 0.8 versus H1 : p>0.8 n=125; x=105; a=0.05 calculate the test statistic, z0
The test statistic is z₀ = 2.65 and the P-value is 0.004. The null hypothesis is rejected at the 5% level of significance, and we conclude that there is sufficient evidence to suggest that the true proportion is greater than 0.8.
To test the hypothesis using the P-value approach, we can follow these steps:
Check whether the sample size is large enough for the normal approximation to the binomial distribution. The requirements are satisfied if np₀ >= 10 and n(1-p₀) >= 10,
where p₀ is the hypothesized proportion under the null hypothesis. In this case, p₀ = 0.8, n = 125, so np₀ = 100 and n(1-p₀) = 25, both of which are greater than 10.
Set up the null and alternative hypotheses.
The null hypothesis is H₀: p = 0.8 (the true proportion is 0.8).
The alternative hypothesis is H₁: p > 0.8 (the true proportion is greater than 0.8).
Calculate the test statistic.
Under the null hypothesis, the test statistic follows a standard normal distribution.
The test statistic is calculated as:
z₀ = (x - np₀) / sqrt(np₀(1-p₀))
where x is the number of successes in the sample.
Plugging in the values, we get:
z₀ = (105 - 1250.8) / √(1250.8 x 0.2)
z₀ = 2.65
Calculate the P-value.
The P-value is the probability of observing a test statistic as extreme or more extreme than the one calculated from the sample, assuming the null hypothesis is true.
Since this is a right-tailed test (H₁: p > 0.8), we calculate the area to the right of the test statistic.
Using a standard normal table or calculator, we find that the area to the right of z₀= 2.65 is 0.004.
Therefore, the P-value is 0.004.
Make a decision and interpret the results.
Using a significance level of α = 0.05, we compare the P-value to α.
Since the P-value (0.004) is less than α (0.05), we reject the null hypothesis.
We conclude that there is sufficient evidence to suggest that the true proportion is greater than 0.8 at a 5% level of significance.
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[-/5 Points]
DETAILS GHCOLALG12 4.4.026.
Write a third-degree polynomial function with real coefficients and the given zeros. (Use x as your variable.)
7, i
P(x) =
The value of a third-degree polynomial function with real coefficients and the given zeros are,
⇒ P (x) = x³ - (i + 14)x² + (49 + 14i)x - 49i
We have to given that;
Zeroes of the polynomial are,
⇒ 7, i
Now, The value of a third-degree polynomial function with real coefficients and the given zeros are,
⇒ P (x) = (x - 7)² (x - i)
⇒ P (x) = (x² + 49 - 14x) (x - i)
⇒ P (x) = (x³ - ix² + 49x - 49i - 14x² + 14ix)
⇒ P (x) = x³ - (i + 14)x² + (49 + 14i)x - 49i
Thus, The value of a third-degree polynomial function with real coefficients and the given zeros are,
⇒ P (x) = x³ - (i + 14)x² + (49 + 14i)x - 49i
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an amount of R1965,00 is invested in an account paying 11,50% interest per year, compounded semi-annually at the time of withdrawal the amount of interest earned is R 633,75 . the number of years that the money was invested rounded to two decimal places is
The value of number of years that the money was invested rounded to two decimal places is, 2.5 years
We have to given that;
An amount of R1965,00 is invested in an account paying 11,50% interest per year, compounded semi-annually at the time of withdrawal the amount of interest earned is R633,75
Hence, We get;
Interest = P ( (1 + r/2)ⁿ - 1965)
R633.75 = 1965 (1 + 11.5%/2)ⁿ - 1965
1965 × 1.0575ⁿ - 1965 = 633.75
1965 × 1.0575ⁿ = 2598.75
1.0575ⁿ = 1.3225
n = log₁.₀₅₇₅ (1.3225)
n = 5
Hence, Number of years is, 5/2 = 2.5
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The Bearing of X from Y is 35° Find the bearing of Y from X
Using the Law of Cosines, the angle between the lines PX and PY is found to be approximately 101.5°. Subtracting this angle from the bearing of Y from P (125°) and the bearing of X from P (35°) gives a bearing of approximately 54.5° from X to Y.
We can use the Law of Cosines to find the angle between the lines PX and PY, and then add this angle to the bearing of X from P to find the bearing of Y from X.
Let A be the angle between the lines PX and PY, and let C be the distance between X and Y. Then we have
C² = PX² + PY² - 2(PX)(PY)cos(A)
Substituting the given values, we get
950² = 420² + PY² - 2(420)(PY)cos(A)
Solving for cos(A), we get
cos(A) = (PY^2 - 950^2 - 420^2) / (-2)(420)(950)
cos(A) = -0.186
Since A is an acute angle, we can take the inverse cosine to find its measure
A = cos⁻¹ (-0.186)
A ≈ 101.5°
The bearing of X from P is 35°, so the bearing of Y from X is
125° - 35° - A ≈ 54.5°
Therefore, the bearing of Y from X is approximately 54.5 degrees to the nearest minute.
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--The given question is incomplete, the complete question is given
" The bearings from a point P of two landmarks X and Y are 35° and 125° and their distances from P are 420 m and 950 m respectively. Find the bearing of Y from X (to the nearest minute)."--
In the diagram m < AFB = 78, Which angle is supplementary to
Answer:
BFD
Step-by-step explanation:
Supplementary angles add to 180, or will form a straight line.
< AFB and angle BFD will form a straight line so they are supplementary.
NEED HELP ASAP PLS AND THX PIC ATTACHED
The Area of Triangle is 10 square unit.
We have,
base = 4 unit
Height = 5 unit
So, Area of Triangle
= 1/2 x base x height
= 1/2 x 4 x 5
= 2 x 5
= 10 square unit
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Three randomly selected children are surveyed. The ages of the children are 2, 6, and 7. Assume that
samples of size n=2 are randomly selected with replacement from the population of 2, 6, and 7. Listed
below are the nine different samples. Complete parts (a) through (d).
2,2 2,6 2,7 6,2 6,6 6,7 7,2 7,6 7,7
a. For the population, find the proportion of even numbers.
The proportion is.
(Round to three decimal places as needed.)
b. Find the proportion of even numbers of each of the nine samples, then summarize the sampling
distribution of the sample proportion of even numbers in the format of a table representing the probability
distribution of the distinct proportion values.
Sample
Proportion
...
Probability
(Type integers or simplified fractions.)
c. Find the mean of the sampling distribution of the sample proportion of even numbers.
The mean is.
(Round to three decimal places as needed.)
d. Based on the preceding results, is the sample proportion an unbiased estimator of the population
proportion? Why or why not?
OA. The sample proportions do not target the proportion of even numbers in the population, so sample
proportions do not make nood estimators of the nonulation proportion
a) the proportion of even numbers in the population is 2/3 or approximately 0.667.
b. Sample Proportions and Probability Distribution Table is attched.
c) c. The mean of the sampling distribution of the sample proportion of even numbers is approximately 0.3333.
d. The sample poportion is a biased estimator of the population proportion because the sample proportions do not target the proportion of even numbers in the population.
How did we get to the above conclusions ?a. The population consists of 2, 6, and 7. The proportion of even numbers in the population is 1/3 since only 6 is even.
b. We can find the proportion of even numbers in each sample as follows:
2,2: 2/2 = 1
2,6: 1/2 = 0.5
2,7: 1/2 = 0.5
6,2: 1/2 = 0.5
6,6: 2/2 = 1
6,7: 1/ 2 = 0.5
7, 2: 1/2 = 0.5
7,6: 1/2 = 0.5
7,7: 0/2 =0
This means that
0 ⇒ 1/9
0.5⇒ 5/9
1 ⇒ 3/9 (or 1/3)
So the above is summarized onto the table attached.
C) The mean of the sampling distribution of the sample proportion of even numbers is the weighted average of the possible values of the sample proportion,
where the weights are the probabilities of each value. Hence,
(0 x 1/9) + (0.5 x 6/9 ) + (1 x 2/ 9)
= 1/3
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evaluate the following 12.45x11
cos 0 = 5. Find tan 0.
A) 12/15
B) 9/15
C) 12/9
D) 15/12
Answer:
C
Step-by-step explanation:
given
cosΘ = [tex]\frac{9}{15}[/tex] = [tex]\frac{adjacent}{hypotenuse}[/tex]
then to find the third side (opposite) use Pythagoras' identity
opposite² + 9² = 15²
opposite² + 81 = 225 ( subtract 81 from both sides )
opposite² = 144 ( take square root of both sides )
opposite = [tex]\sqrt{144}[/tex] = 12
then
tanΘ = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{12}{9}[/tex]
(Creating Graphical Representations MC
In the 2021 football season, the Riverside Red Dragon's manager gathered the points scored by the team during the regular season games. The following data set shows the values collected by the manager.
{17, 0, 28, 17, 17, 20, 28, 11, 17, 22, 24, 33, 20, 31, 20, 3}
Which of the following stem-and-leaf plots correctly graphs the data set?
2021 Riverside Red Dragon Football Season Points
0 0 3
1 1 7 7 7 7
2 0 0 0 2 4 8 8
3 1 3
Key 1|1 = 11
2021 Riverside Red Dragon Football Season Points
0 0 3
1 1 7
2 0 2 4 8
3 1 3
Key 1|1 = 11
2021 Riverside Red Dragon Football Season Points
1 1 7
2 0 2 4 8
3 0 1 3
Key 1|1 = 11
2021 Riverside Red Dragon Football Season Points
1 1 7 7 7 7
2 0 0 0 2 4 8 8
3 0 1 3
Key 1|1 = 11
The stem and leaf plot that correctly represents the data sets is
Stem Leaf
0 | 0, 3
1 | 7, 7, 7, 1, 7,
2 | 8, 8, 2, 4, 0. 0
3 | 3, 1,
Option B is the correct answer.
We have,
The following data set shows the values collected by the manager.
{17, 0, 28, 17, 17, 20, 28, 11, 17, 22, 24, 33, 20, 31, 20, 3}
Now,
We make the stem and leaf plot as:
Stem Leaf
0 | 0, 3
1 | 7, 7, 7, 1, 7,
2 | 8, 8, 2, 4, 0. 0
3 | 3, 1,
Here,
3 can be written as 03 and 0 can be written as 00.
Thus,
The stem and leaf plot that correctly represents the data sets is
Stem Leaf
0 | 0, 3
1 | 7, 7, 7, 1, 7,
2 | 8, 8, 2, 4, 0. 0
3 | 3, 1,
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8.1 CHECK YOUR UNDERSTANDING - TURN ME IN!
1. A recent Pew Research center poll asked a random sample of teens "In general, how much time would you say
you spend with your friends in person." 36 % of the 739 respondents said "too little". We will estimate the
population proportion with 99% confidence.
a) Interpret the confidence level.
36%
b) Construct and interpret a 99% confidence interval for the population proportion.
If you created a 95% confidence interval instead, would it be narrower or wider? Explain.
c) if you created a 95% confidence interval instead would it be narrower or wider
AP STATS
a) The confidence level of 99% means that we are 99% sure that the interval contains the true population proportion.
b) The 99% confidence interval for the population proportion is given as follows: (0.3145, 0.4055). It means that we are 99% sure that the true population proportion is between 0.3145 and 0.4055.
c) The 95% confidence interval would be narrower, as it would have a lower critical value, thus the margin of error would also be lower.
What is a confidence interval of proportions?A confidence interval of proportions has the bounds given by the rule presented as follows:
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which the variables used to calculated these bounds are listed as follows:
[tex]\pi[/tex] is the sample proportion, which is also the estimate of the parameter.z is the critical value.n is the sample size.The confidence level is of 99%, hence the critical value z is the value of Z that has a p-value of [tex]\frac{1+0.99}{2} = 0.995[/tex], so the critical value is z = 2.575.
The parameters for this problem are given as follows:
[tex]\pi = 0.36, n = 739[/tex]
The lower bound of the interval is given as follows:
0.36 - 2.575 x sqrt(0.36 x 0.64/739) = 0.3145.
The upper bound of the interval is given as follows:
0.36 + 2.575 x sqrt(0.36 x 0.64/739) = 0.4055.
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coast guard station A is 120 miles due west from station b. a ship at sea sends an SOS call. Station a indicates that the ship is located n40°e bearing from a. Station b indicates that the ship is located n30°w bearing from b.
a.) how far is each station from the ship?
b.) If a helicopter flies 200 mph from the station nearest, how long will it take to reach the ship?
plsplspls help
If the helicopter flies 200 mph from the station nearest, the time it will it take to reach the ship is 0.52 hours
What is Distance?The numerical measurement between two entities or locations is defined as the distance, recorded in units such as kilometers, feet, meters, and miles. Determining the direct geometric line from point to point requires distinct models of calculation for both 2D and 3D geometry, most notably utilizing the Pythagorean theorem or the distance formula, respectively.
Physical sciences heavily rely on this notion, as it aids with computing rates that include: displacement, velocity, and acceleration. However, multiple factors - involving speed, direction, and time - can alter measured distances traveled by an object.
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The average life of a vacuum cleaner is 6.5 years, and the data follows a normal distribution curve. If the standard deviation is 0.5 years, which of the following statements is true?
50% of vacuum cleaners last less than 6.5 years, and 50% of vacuum cleaners last more than 6.5 years.
Your grandmother’s vacuum cleaner that has lasted 8 years is three standard deviations from the mean.
It is very likely that a vacuum will last between 5.5 and 7.5 years.
99.7% of vacuums last more than 6 years.
The average life of a vacuum cleaner is 6.5 years, which is the mean, but the median is higher at 8 years.
It is very likely that a vacuum will last between 5.5 and 7.5 years.
This is because we can use the properties of the normal distribution to calculate that about 68% of the vacuum cleaners will fall within one standard deviation of the mean, which in this case is between 6.5 - 0.5 = 6 and
6.5 + 0.5 = 7
About 95% of the vacuum cleaners will fall within two standard deviations of the mean, which in this case is between 6 - 0.5 = 5.5 and 6.5 + 0.5 = 7
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Which statement about an object turning 90 degrees around in a circle is true?
When an object turns 90 degrees around in a circle, it turns 1/4 of the way around in a circle. Therefore, the correct statement is: "It turns 1/4 of the way around in a circle."
To understand why an object turning 90 degrees around in a circle turns 1/4 of the way around in a circle, it's helpful to consider the relationship between angles and circles.
A circle is a geometric shape that is defined by a set of points that are equidistant from a center point.
The distance from the center point to any point on the circle is called the radius of the circle. The circumference of a circle is the distance around the circle, and it is equal to 2π times the radius.
A circle has a total angle of 360 degrees. When an object turns 90 degrees around in a circle, it covers only a quarter of the total angle.
Therefore, it turns 1/4 of the way around in a circle.
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Your question seems incomplete, the probable complete question is:
Which statement about an object turning 90 degrees around in a circle is true?
It turns 1/4 of the way around in a circle
It turns 2/4 of the way around in a circle
It turns 3/4 of the way around in a circle
It turns 4/4 of the way around in a circle
For her end of year party Adriana mixed 6 L of Brand A juice with 9 L of Brand B juice. Brand A contains 52% fruit and Brand B contains 12% fruit juice. What percent of the mixture is fruit juice?
A. 30%
B. 28%
C. 20%
D. 32%
The per cent of fruit juice in the mixture is 28%. The correct option is B.
To determine the percent of fruit juice in the mixture, we need to calculate the total amount of fruit juice in the 6 L of Brand A juice and the 9 L of Brand B juice, and then divide it by the total volume of the mixture.
The amount of fruit juice in 6 L of Brand A juice is:
0.52 x 6 L = 3.12 L
The amount of fruit juice in 9 L of Brand B juice is:
0.12 x 9 L = 1.08 L
The total amount of fruit juice in the mixture is:
3.12 L + 1.08 L = 4.20 L
The total volume of the mixture is:
6 L + 9 L = 15 L
So, the per cent of fruit juice in the mixture is:
(4.20 L / 15 L) x 100% = 28%
Therefore, the correct answer is (B) 28%.
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When Steven was 3 years old (on his birthday), his grandmother decided to set up a trust account to pay for his college education. She wanted the account to grow
to $100,000 by his 18th birthday. If she was able to invest her money at 4% per year, how much did she have to deposit into this trust account? (Note: The
amount deposited is known as the present value of the investment. The $100,000 is known as the future value. Round your answer to the nearest cent.)
$
Using the future value,
Steven's grandmother needed to deposit $55,469.56 into the trust account.
We have,
We can use the formula for the future value of a present sum:
FV = PV(1 + r)^n
where FV is the future value, PV is the present value, r is the annual interest rate, and n is the number of years.
In this case, we have:
FV = $100,000
PV = unknown
r = 4% = 0.04
n = 15 years (18 - 3 = 15)
Substituting these values into the formula, we get:
$100,000 = PV(1 + 0.04)^15
Solving for PV, we get:
PV = $55,469.56
Thus,
Steven's grandmother needed to deposit $55,469.56 into the trust account.
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a)
b)
1. Convert the following Mayan numbers to
decimal (base 10).
: :|| :||
The given Mayan number which is : :|| :|| in decimal (base 10) is 42.
The Mayan number system is a base-20 system that uses three symbols: a dot (.), a horizontal bar (|), and a shell-like symbol (:). The symbol for zero is a shell-like symbol (:).
To convert the given Mayan number to decimal (base 10), we need to understand the positional value of each symbol. Each position in the number represents a power of 20, with the rightmost position being 20⁰, the next position to the left being 20¹, and so on.
The Mayan number given, : :|| :||, can be broken down as follows:
The leftmost position has no symbol, which represents a value of 0.
The second position from the left has two shell-like symbols (:), which represents a value of 2x20¹ = 40.
The third position from the left has two horizontal bars (||), which represents a value of 2x20⁰ = 2.
The given Mayan number in decimal (base 10) is 40 + 2 = 42.
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Complete question is:
Convert the following Mayan number to decimal (base 10).
: :|| :||
Cinco más el recíproco de un número es igual a 11/5
Answer:
5 + 1/x = 11/5
Podemos simplificar esta ecuación multiplicando ambos lados por 5x, lo que da:
25x + 5 = 11x
Ahora, podemos resolver x aislando la variable en un lado de la ecuación:
25x - 11x = -5
14x = -5
x = -5/14
Por lo tanto, la solución a la ecuación es x = -5/14
Solve for x:
-5 - 3(6x-8) = -5x + 19
Show your work
Answer: x = 0
Step-by-step explanation:
simplify the expression
−5−3(6x−8)=−5x+19
−5−18+24=−5+19
19−18x=−5x+19
−18+19=−5+19
−5−3(6x−8)=−5x+19
−18x+19=−5x+19
−5−3(6x−8)=−5x+19
−18x+19=−5x+19
−18+19−19=−5+19−19
−18x=−5x+19 − 19
−18x+19−19=−5x+19 − 19
−18x=−5x
−18x+5x=−5x+5x
x=−5x+5x−13
x−13=−5+5
−13x=0
−13x/−13 = 0/-13
x= 0/−13
x= 0
The number of milligrams D(h) of a certain drug that is in a patient's bloodstream h hours after the drug is injected is given by the following function.
D(h)=30e^-0.35h
When the number of milligrams reaches 11, the drug is to be injected again. How much time is needed between injections?
Round your answer to the nearest tenth, and do not round any intermediate computations.
When the number of milligrams reaches 11, the drug is to be injected again. We need approximately 6.7 hours between injections.
The given function is D(h)=30[tex]e^{-0.35h[/tex], which gives the number of milligrams D(h) of the drug in the patient's bloodstream h hours after it is injected.
When the drug is injected again, the number of milligrams in the bloodstream will be 11. Therefore, we need to find the value of h that satisfies the equation:
11 = 30[tex]e^{-0.35h[/tex]
To solve for h, we can first divide both sides by 30:
11/30 = [tex]e^{-0.35h[/tex]
Next, we take the natural logarithm of both sides:
ln(11/30) = ln([tex]e^{-0.35h[/tex])
Using the property of logarithms that ln(eˣ) = x, we can simplify the right side:
ln(11/30) = -0.35h
Finally, we can solve for h by dividing both sides by -0.35 and multiplying by -1:
h = (-1/0.35)ln(11/30)
Using a calculator, we get:
h ≈ 6.7
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