Nico completes 1/8 of his math problems in 2/5 of an hour.At tis rate how many of his math problems will he he finish in 1 hour
Answers
Answer:
it is 1/8÷2/5= 5/16
Step-by-step explanation:
did that help??????????????????
Related Questions
Chord AC intersects chord BD at point P in circle Z.
AP=12 m
DP=5 m
PC=6 m
What is BP?
Enter your answer as a decimal in the box.
_______ m
Answers
The length of BP is 14.4 meters.
To find the length of BP, we can use the property that states that when two chords intersect inside a circle, the product of the segment lengths on one chord is equal to the product of the segment lengths on the other chord.
Using this property, we can set up the equation:
AP * PC = BP * DP
Substituting the given values:
12 m * 6 m = BP * 5 m
Simplifying:
72 m^2 = BP * 5 m
To solve for BP, divide both sides of the equation by 5 m:
72 m^2 / 5 m = BP
Simplifying:
14.4 m = BP
Therefore, the length of BP is 14.4 meters.
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slope from two points
Answers
Answer:
- 5/7
Step-by-step explanation:
y2 - y1 / x2 - x1
(-3 - 2) / (3 + 4)
- 5/ 7
of a vertain high school graduating class, 75 percent of the students continued their formal education, and 80 percent of those who contined their formal education in the class went four year collages. if 300 students in the class went to four year colleges, how many students were in the graduating class
Answers
Answer:
Step-by-step explanation:
The isosceles triangle has a perimeter of 7.5 m.
Which equation can be used to find the value of x if the shortest side, y, measures 2.1 m?
2 x minus 2.1 equals 7.5
4.2 plus y equals 7.5
y minus 4.2 equals 7.5
2.1 plus 2 x equals 7.5
the number of trials and the population proportion are respectively represented by what symbols?
Answers
The number of trials is typically represented by the letter "n" in statistics. This refers to the number of independent and identical observations that are taken during an experiment or study. The population proportion, on the other hand, is often represented by the letter "p".
This refers to the proportion or percentage of individuals in a population that exhibit a certain characteristic or behavior. For example, if we were studying the proportion of people who prefer chocolate ice cream, "p" would represent the percentage of people in the population who prefer chocolate ice cream.
It's important to note that the number of trials and the population proportion are both key factors in statistical analysis, as they can help researchers draw conclusions about the population as a whole based on a smaller sample size.
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what is the equation of the blue line
Answers
to get the equation of any straight line, we simply need two points off of it, let's use those two in the picture below
\((\stackrel{x_1}{1}~,~\stackrel{y_1}{5})\qquad (\stackrel{x_2}{3}~,~\stackrel{y_2}{9}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{9}-\stackrel{y1}{5}}}{\underset{\textit{\large run}} {\underset{x_2}{3}-\underset{x_1}{1}}} \implies \cfrac{ 4 }{ 2 } \implies 2\)
\(\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{5}=\stackrel{m}{ 2}(x-\stackrel{x_1}{1}) \\\\\\ y-5=2x-2\implies {\Large \begin{array}{llll} y=2x+3 \end{array}}\)
A triangular prism is 8 yards long. It has a triangular face with a base of 12 yards. The volume of the prism is 720 cubic yards. What is the height of its triangular face
Answers
The height of the triangular face is 15 yards.
To find the height of the triangular face, we will use the formula for the volume of a triangular prism:
Volume = (1/2) * Base * Height * Length.
We are given the following values:
- Volume (V) = 720 cubic yards
- Length (L) = 8 yards
- Base (B) = 12 yards
We need to find the height of the triangular face (H).
Let's plug in the given values into the formula and solve for H:
720 = (1/2) * 12 * H * 8
First, simplify the equation:
720 = 6 * H * 8
720 = 48 * H
Now, divide both sides by 48 to find the value of H:
H = 720 / 48
H = 15 yards.
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A population of measurements is approximately normal with a mean of 95 and a standard deviation of 15. The percentage of measurements that are 124. 4 or higher is.
Answers
The percentage of Measurements that are 124.4 or higher is approximately 0.99%.
In order to determine the percentage of measurements that are 124.4 or higher in a population of measurements that is approximately normal with a mean of 95 and a standard deviation of 15, we need to use the z-score formula.
The z-score formula is used to standardize a distribution so that it can be compared to a normal distribution with a mean of 0 and a standard deviation of 1.
The formula for calculating the z-score is: z = (x - μ) / σWhere:x is the measurement we want to standardize.μ is the population mean.σ is the population standard deviation.
The first step is to calculate the z-score for the measurement of 124.4:z = (124.4 - 95) / 15z = 2.2933The second step is to find the percentage of measurements that are 124.4 or higher using a standard normal distribution table. We look up the area to the right of the z-score of 2.2933 in the table.
The closest value in the table is 0.9901, which corresponds to a z-score of 2.33. We know that the area to the left of a z-score of 2.33 is 0.9901, so the area to the right of a z-score of 2.33 is:1 - 0.9901 = 0.0099
This means that approximately 0.99% of the measurements are 124.4 or higher.
Therefore, the percentage of measurements that are 124.4 or higher is approximately 0.99%.
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What is the volume of the figure below?
A.180 centimeters cubed
B.540 centimeters cubed
C.380 centimeters cubed
D.360 centimeters cubed
Answers
Answer:
a
Step-by-step explanation:
Can someone tell me the slope for this graph! Please and thank you!! I have attached a picture
Answers
Answer:
-1x, also can be re-written as -x
Step-by-step explanation:
You can use the formula as follows:
\(\frac{y_2-y_1}{x_2-x_1}\)
Find two points on the graph.
We will use (3,1) and (4,0)
We now plug in the values into the formula.
\(\frac{0-1}{4-3} = -\frac{1}{1} = -1\)
The slope is equal to -1x, which can be re-written as -x.
Does anybody know the answer to this
Answers
substitute 3 in X's place
-2x + 5 = -2(3) + 5 = -6 + 5 = -1
hope it helps...!!!
So it’ll look like this:
F(3)= -2(3) + 5
Then you’ll solve which would be:
F(3)= -6 + 5
Answer is -1
Salaries of entry-level computer engineers have Normal distribution with unknown mean and variance. Three randomly selected computer engineers have salaries (in $1000s): 30, 50, 70 (a) Construct a 90% confidence interval for the average salary of an entry-level computer engineer. 302 Probability and Statistics for Computer Scientists (b) Does this sample provide a significant evidence, at a 10% level of significance, that the average salary of all entry-level computer engineers is different from $80,000? Explain. (c) Looking at this sample, one may think that the starting salaries have a great deal of variability. Construct a 90% confidence interval for the standard deviation of entrylevel salaries.
Answers
a) The 90% confidence interval for the average salary of an entry-level computer engineer is of: (16.28, 83.72).
b) The sample contains the value 80, hence it does not give sufficient evidence that the average salary of all entry-level computer engineers is different from $80,000.
c) The 90% confidence interval for the standard deviation of entry level salaries is of: (6.67, 389.86).
What is the confidence interval for the population mean?The bounds of the confidence interval are given according to the following rule:
\(\overline{x} \pm t\frac{s}{\sqrt{n}}\)
In which the variables of the equation are presented as follows:
\(\overline{x}\) is the sample mean.t is the critical value.n is the sample size.s is the standard deviation for the sample.The sample in this problem is given as follows:
30, 50, 70.
Hence the values of the parameters are given as follows:
\(\overline{x} = 50, s = 20, n = 3\)
The critical value, using a t-distribution calculator, for a two-tailed 90% confidence interval, with 3 - 1 = 2 df, is t = 2.92.
Then the lower bound of the interval is of:
\(\overline{x} - t\frac{s}{\sqrt{n}} = 50 - 2.92\frac{20}{\sqrt{3}} = 16.28\)
The upper bound of the interval is of:
\(\overline{x} + t\frac{s}{\sqrt{n}} = 50 + 2.92\frac{20}{\sqrt{3}} = 83.72\)
What is the confidence interval for the standard deviation?The bounds of the confidence interval for the standard deviation are given as follows:
\(\frac{(n - 1)s^2}{\chi^2_\frac{\alpha}{2}} \leq \sigma \leq \frac{(n - 1)s^2}{\chi^2_{1 - \frac{\alpha}{2}}}\)
The critical values of the chi-square distribution with a confidence level of 90% and 2 df are given as follows:
\(\chi^2 = 0.1026, \chi^2 = 5.9915\)
Hence the lower bound of the interval is of:
2 x 20/5.9915 = 6.67.
The upper bound of the interval is of:
2 x 20/0.1026 = 389.86.
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help please
What is e in math?
Answers
e is the Exponential Constant or Euler's Number.
It has a value of 2.718281828...
\(\huge\mathfrak\colorbox{white}{}\)
e to the n is given by:
\(\huge{e}^{n}= [\sum_{k=0}^{∞} (\frac{{n}^{k}}{k!})]\)
PLEASE HELP!! 7.9 divided by 276.5. Show your work on a paper or online thanks! <3
Answers
Answer:3.5
Step-by-step explanation: Check file
Give an example of a matrix A such that Im(A) is the plane with normal vector
[1]
[3]
[2]
in R^3.
Answers
Thus, \(\left[\begin{array}{ccc}-2\\0\\1\end{array}\right]\) , \(\left[\begin{array}{ccc}-3\\1\\0\end{array}\right]\) are the required vectors.
What is a normal vector to a plane?
A nonzero vector that is orthogonal to direction vectors of the plane is called a normal vector to the plane.
The image of a function consists of all the values the function takes in its target space. If f is a function from X to Y, then
image(f) = {f : (x : x in X)} = {b in Y : b = f for some x in X}
Consider the system in terms of an equation,
x + 3y + 2z = 0
x = -3y - 2z
When y = 0
\(x =\left[\begin{array}{ccc}-2\\0\\1\end{array}\right]\)
When z = 0
\(x =\left[\begin{array}{ccc}-3\\1\\0\end{array}\right]\)
Thus, \(\left[\begin{array}{ccc}-2\\0\\1\end{array}\right]\) , \(\left[\begin{array}{ccc}-3\\1\\0\end{array}\right]\) are the required vectors.
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Find the vertex of the parabola y = –x^2 + 10x – 21.
Answers
The vertex of the parabola is (5, 4). The solution has been obtained by using quadratic formula.
What is quadratic formula?
The quadratic formula is used to determine an equation's roots. This formula assists in evaluating the solutions of the quadratic equations instead of the factorization approach.
We are given equation as y = -x² + 10x - 21.
Using quadratic formula, we know that x = -b/2a
So,
x = -10/-2
x = 5
On substituting this in the equation, we get
y = -5² + 10(5) - 21
y = -25 + 50 - 21
y = 4
Hence, the vertex of the parabola is (5, 4).
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a research organization reported that 41 percent of adults who were asked to describe their day responded that they were having a good day rather than a typical day or a bad day. to investigate whether the percent would be different for high school students, 600 high school students were randomly selected. when asked to describe their day, 245 students reported that they were having a good day rather than a typical day or a bad day. do the data provide convincing statistical evidence that the proportion of all high school students who would respond that they were having a good day is different from 0.41 ?
Answers
Answer: Yes.
Step-by-step explanation:
600 x 0.41 or 41% = 246, which yes is different from 0.41.
1/16 x 6 then round to 2 decimal places.
Answers
Answer:
.38
Step-by-step explanation:
1/16 * 6 = 6/16
Divide the top and bottom by 2
3/8
.375
Round to 2 decimal places
.38
Reason: Trust me
What is the value of x? (hint: use the measure of XYZ) will mark brainliest
Answers
5x=180
x=36
I believe this is how you do it I haven’t done geometry in a year
In 2002, 946 million telephones with cords were sold. Each year after that, the number of the number of corded phones fell by approximately 28 million per year. The same year, approximately 16 million cell phones were being used, and this number was predicted to increase by approximately 34 million per year. Let x represent the number of years since 2002 and y represent the total number of accountsWrite an equation for each company to represent the number of accounts in a give year
Answers
The companies being considered are:
The company that is concerned with corded telephones
The company that is concerned with cellphones
Let x represent the number of years since 2002 and y represent the total number of accounts
From the information given,
Considering the first company,
Initial number of accounts = 946 x 10^6
The number of accounts fell by approximately 28 million per year. This means that in x years, the number of accounts that would have been lost is
28 x 10^6 * x
= - 28x x 10^6
It is negative because it is reducing
The slope intercept form of a linear equation is expressed as
y = mx + c
where
m = rate of change
c = y intercept of value of y when x = 0
By comparing with the given scenario,
10 points
2. You weigh six packages and find the weights to be 29, 19, 69, 24, 64,
and 59 ounces. If you include a package that weighs 219 ounces, which
will increase more, the median or the mean?
Answers
Answer:
mean
Step-by-step explanation:
mean of six packages = (29+19+69+24+64+59)/6 = 44 ounces
Median of these six packages (19,24,29,59,64,69) = (29+59)/2 = 88/2= 44 ounces
Now, if we includes a package that weighs 219 ounces
The new mean = (29+19+69+24+64+59+219)/7 = 69
New median (19,24,29,59,64,69, 219) = 59
Hence, we say that the mean increases more than the median
What number should fill in the blank? 36 x 8 =_________+6)x 8
Answers
The number to be filled in the blank is 30
How to calculate the missing number?Let us consider the number in the blank = x
Rewriting it as a linear equation,
36 * 8 =( x + 6 )8
288 = ( x + 6) 8
288 /8 = x + 6
36 = x + 6
x = 36- 6
x = 30
The number to be filled in the blank is 30
What is a linear equation?A linear equation is one that has a degree of 1 as its maximum value. Each term in a linear equation has an exponent of 1, and when this algebraic equation is graphed, it always produces a straight line. Both linear equations with one variable and those with two variables exist. Ax+ B = 0, where A and B are both real integers, and x is the only variable, is the standard form or general form of a linear equation in one variable. A vertical line that is parallel to the y-axis is formed on the graph of a linear equation with one variable, x, and vice versa.To learn more about linear equation, refer:
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What is the quotient of 65,610 ÷ 18?
Answers
Answer:
3645
Step-by-step explanation:
65610/18=3645
Sofia has 25 coins in nickels and dimes in her pocket for a total of $1.65. How many of each type of coin does she have?
First complete the equations below, where N stands for nickels and D stands for dimes.
[?]N+[]D=1.65;N+D=[]
Hint: A nickel is worth $0.05 and a dime is worth $0.10.
Answers
Sofia has 17 nickels and 8 dimes in her pocket, for a total of $1.65.
To solve this problem, let's assign variables to represent the number of nickels and dimes Sofia has. Let's say N represents the number of nickels and D represents the number of dimes.
From the problem, we know that Sofia has a total of 25 coins. Therefore, we can write the equation: N + D = 25.
We also know that the total value of all the coins is $1.65. Since a nickel is worth $0.05 and a dime is worth $0.10, we can write the equation: 0.05N + 0.10D = 1.65.
To solve this system of equations, we can use substitution or elimination. Let's use substitution. We can solve the first equation for N: N = 25 - D.
Now, substitute the value of N in the second equation: 0.05(25 - D) + 0.10D = 1.65.
Simplify the equation: 1.25 - 0.05D + 0.10D = 1.65.
Combine like terms: 0.05D = 1.65 - 1.25.
Simplify the right side: 0.05D = 0.40.
Divide both sides by 0.05: D = 0.40 / 0.05.
D = 8.
Now, substitute the value of D back into the first equation to find N: N + 8 = 25.
Simplify the equation: N = 25 - 8.
N = 17.
Therefore, Sofia has 17 nickels and 8 dimes.
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please help I will make the brainiest
Answers
Answer:
The awswer is red. it only makes sense
Answer:
Red 3/20
Step-by-step explanation:
Red because when you turn it into a decimal form it is equal to:
Red: 0.15 - the least
Yellow: 0.40
Green: 0.25
Purple: 0.20
hope that helps!
Julissa has loan of $46,680. This loan has a simple interest rate of 4% per year. What is the amount of interest that Julissa will be charged on this loan at the end of one year? i need it now please
$18, 672
$1,867.20
$11,495
$48,547.20
Answers
Answer:
A
Step-by-step explanation:
When constructing the bisector of a line segment, you are also constructing the
perpendicular bisector of a line segment. true or false Explain your reasoning.
Answers
Answer:
True
This is so because the line is drawn from points on both sides of the line to be bisected, which are equidistant from the ends and the center of the line to be bisected line giving an angle of 90° at the intersection of both lines.
Step-by-step explanation:
The steps for constructing the bisector of a line segment includes the following
1) The compass is placed at one end of the line segment
2) The width of the compass is adjusted so as to be wider than half the length of the line segment
3) Arcs are now to be drawn above and below the line segment to be bisected
4) From the other end of the line to be bisected with the same compass width, draw arcs above and below the line segment to be bisected to intersect the previous arcs drawn above
5) With a straight edge draw a line through the intersection of the arcs to draw the bisector
The line so drawn is the perpendicular bisector because it is drawn from points on both sides of the bisected line equidistant from the ends and the center of the bisected line.
What is the distance between point A and point B?
10
B
9
8
7
6
5
4
3
2
1
A
х
0 1 2 3 4 5 6 7 8 9 10
V 81
V 45
7
7.5
Answers
Answer:
\( \sqrt{45} \)
Step-by-step explanation:
(5,9) and (2,3)
then by distance formula
\(d = \sqrt{{(x1 - x2)}^{2} + {(y1 - y2)}^{2} } \)
d²=3²+6²
d²=9+36
d²=45
\(d = \sqrt{45 } \)
Which of the following is the equation of a line perpendicular to the line
Answers
Answer:
A. - 2x + 3y = 21Step-by-step explanation:
The perpendicular lines have opposite reciprocal slopes.
The given line has a slope of:
m = -3/2The perpendicular slope is:
m = 2/3And its y-intercept is:
9 = 2/3*3 + bb = 7The line is:
y = 2/3x + 7Convert this into standard form and compare with answer choices:
3y = 2x + 21- 2x + 3y = 21Correct choice is A
The price of a pair of shoes increases from $20 to $32. What is the percent increase?
Answers
Answer:5%
Step-by-step explanation:
hope that helped
Math trigonometry non right angle help please
guys please
Answers
Answer:
about 21.3 cm²
Step-by-step explanation:
Given a triangle with three sides 6 cm, 8 cm, and 12 cm, and smallest angle 26.4°, you want the area.
Area using sine formulaA = 1/2ab·sin(C)
A = 1/2(12 cm)(8 cm)·sin(26.4°) ≈ 21.34 . . . . square units
Area using Heron's formulaThe semiperimeter is ...
s = (6 +8 +12)/2 = 13
The area is ...
A = √(s(s -a)(s -b)(s -c))
A = √(13·(13 -12)(13 -8)(13 -6)) = √(13·1·5·7) = √455
A ≈ 21.33 . . . . square centimeters
The area of the triangle is about 21.3 cm².
__
Additional comment
The problem with over specifying the dimensions of a geometry problem is that it is often difficult to make them consistent. Here, the area values agree to three significant figures. That is about all we can expect, given the angle precision is 3 significant figures.
Your answer depends on the set of dimensions you choose to use. It will be different yet if you use the Law of Sines to find angle A or B for the Sine Formula, especially if you round the angle value to tenths.
The attachment shows the solution using side lengths only.
