Given a line passes through point (5,7) and the origin, find the equation of the line.
y=
Answer: y=7/5x
Step-by-step explanation: use the formula (y2-y1)/(x2-x1) to find the slope. The coordinates are (5,7) and (0,0). (0-7)/(0-5) is 7/5. Slope = 7/5 and since the line passes through the origin the b is 0.
The mean diameter of holes produced by a drilling machine bit is 4.05 mm and the stan dard deviation of the diameters is 0.0028 mm For twenty holes drilled using this machine, determine, correct to the nearest whole num ber, how many are likely to have diame ters of between (a) 4.048 and 4.0553 mm and (b) 4.052 and 4.056 mm, assuming the diameters are normally distributed.
The total number of holes will be (a)15 and (b) 4 when the drilling machine is used whose standard deviation is 0.0028mm.
The square root of the variance is used to calculate the standard deviation, a statistic that expresses how widely distributed a dataset is in relation to its mean.
The sum of all values divided by the total number of values constitutes a dataset's mean.
The mean of the holes are given as 4.05 mm(\(\mu=4.08\))
The standard deviation is given as 0.0028 mm(\(\rho=0.0028\))
Now we will use the z-score and probability distribution to calculate the frequency of the holes to have diameter between 4.048 and 4.0553.
Here \(Pr(4.048\leq X\leq 4.0053)\) ,so we need to compute the z-values
\(Z_1=\frac{X_1-\mu}{\rho} \\Z_1=\frac{4.048-4.05}{0.0028} \\Z_1=-0.7143\)
Similarly:
\(Z_2=1.8929\)
Therefore from the above statements we can say that
\(Pr(-0.7143\leq X\leq 1.8929)\)
Solving for probability distribution we get
\(Pr(4.048\leq X\leq 4.0053)=0.7333\)
Total number of holes=0.7333 × 20= 14.666..
Therefore the number of holes is 15
Similarly
The z-value corresponding to 4.052 mm is given by 0.71
The z-value corresponding to 4.056 mm is given by:2.14
The probability of the diameter being between 4.052 mm and 4.056 mm is 0.4838 – 0.2611 =0.2227
The number likely to have a diameter between 4.052 mm and 4.056 mm = 0.2227 × 20
= 4.454
= 4, correct to nearest whole number
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If a recipe for a cake calls for 2 1/2 cups of flour and Mary wishes to make 3 cakes, how many cups of flour does she need A. 6 B. 6 1/2 C. 7 1/2 D. 9 E. 9 1/2
Answer:
option C 7½ is correct hope this answer helps you dear! take care
John is painting parallel lines in the parking lot to create parking spaces. The measure of angle A is 60° What is the measure of angle B?A-60 °B-90 °C-120 °D-180 °
Since these are parallel lines, the angles formed are congruent ( equal).
So, Angle B=A =60°
Correct option: A-60 °
A flower store has an inventory of 25 roses, 15 lilies, 30 tulips, 20 gladiola, and 10 daisies. A customer picks one of the flowers at random.
What is the probability that the flower is not a rose?
Answer: 75/100
Step-by-step explanation:
the total number of flowers= 25+15+30+20+10
= 100
so probability that the flower is not a rose is= 75/100
Note: i got 75 by subtracting 100 by 25
Try to get to every number from 1 to 10 using four 4's and any number of arithmetic operations (+, −, ×, ÷). You may also you parentheses. Examples to get 0: 0=4+4−(4+4); 0=44−44; 0=4×4−4×4
Answer:
0=4×4−4×4
Step-by-step explanation:
Answer:
\(\boxed{\mathrm{view \: explanation}}\)
Step-by-step explanation:
1 = 4 ÷ 4
2 = (4 + 4) ÷ 4
3 = (4 + 4 + 4) ÷ 4
4 = 4 + 4 - 4
5 = (4 × 4 + 4) ÷ 4
6 = (4 + 4) - (4 ÷ 4) - (4 ÷ 4)
7 = (4 + 4) - (4 ÷ 4)
8 = 4 + 4
9 = (4 + 4) + (4 ÷ 4)
10 = (4 + 4) + (4 ÷ 4) + (4 ÷ 4)
A headphone was sold during a sale for $378.60. what is the regular selling price if the price of the headphone was reduced by 5/6.
$454.32
Explanationgiven
\(\begin{gathered} sale\text{ price =378.60} \\ original\text{ price reduced by 5/6} \end{gathered}\)Step 1
a) let x represent the original price
so, if the original price was reduced by 5/6 to obtain $378.6 we can set an equation:
\(x*\frac{5}{6}=378.6\)now, to solve multiply both sides by 6/5
\(\begin{gathered} x*\frac{5}{6}*\frac{6}{5}=378.6*\frac{6}{5} \\ x(\frac{1}{1})=454.32 \\ x=454.32 \end{gathered}\)therefore, the original price is
$454.32
I hope this helps you
determine whether the statement below is true or false. justify the answer. the solution set of the linear system whose augmented matrix is is the same as the solution set of the equation .
This is a True statement that both the matrix equation and the augmented matrix translate into the same system of linear equations.
What are Linear equations?
An equation is said to be linear if the maximum power of the variable is consistently 1. Another name for it is a one-degree equation.
A rectangular matrix is a grouping of numbers into rows and columns. Systems of equations can be solved using matrices. But first, we need to understand how to use matrices to represent systems.
An augmented matrix can be used to express a set of equations. Each column in an augmented matrix represents a variable or the constant terms, and each row in an augmented matrix represents one equation in the system. As a result, it is clear that augmented matrices provide a convenient approach to express systems of equations.
Therefore it is true that the solution set of the equation's equation is the same as the solution set of the linear system whose augmented matrix is.
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need help with this ASAP
!!!!!!!!!!!!!!!!!!!!!!!!
The fence in dead center is about 399 feet from the third base.
What is the Pythagorean Theorem?The Pythagorean Theorem states that in the case of a right triangle, the square of the length of the hypotenuse, which is the longest side, is equals to the sum of the squares of the lengths of the other two sides.
Hence the equation for the theorem is given as follows:
c² = a² + b².
In which:
c > a and c > b is the length of the hypotenuse.a and b are the lengths of the other two sides (the legs) of the right-angled triangle.For the triangle in this problem, we have that:
The sides are d ft and 90 ft.The hypotenuse is of 409 ft.Hence the distance is obtained as follows:
d² + 90² = 409²
\(d = \sqrt{409^2 - 90^2}\)
d = 399 ft.
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4. The total views of an online video are tripling every ten days. Initially there are 22 views of the video. If v
represents the number of views and d represents days then answer the following.
(a) Write a model for the number of views, v, as a
function of the number of days, d, since there
were 22 views.
(b) By what percent, to the nearest tenth, are the
views increasing per day? Show how you
arrived at your answer.
Part (a)
\(v=22(3)^{d/10}\)
Part (b)
We can rewrite the function as \(v=22(3^d)(3^{1/10})\). Thus, the percentage is \(100(1-3^{1/10})=11.6\%\)
A model for the number of views, v, as a function of the number of days, d, since there were 22 views is \(v = 22(3)^{d/10}\) and the views increasing per day by 11.6%.
What is exponential growth?Exponential growth is a pattern of data that shows greater increases with passing time, creating the curve of an exponential function.
Given that, The total views of an online video are tripling every ten days. Initially there are 22 views of the video, v represents the number of views and d represents days
a) Since the number of views are tripling every ten days, so, the function will be = \(v = 22(3)^{d/10}\)
b) We have function \(v = 22(3)^{d/10}\)
So, percentage = \(100(1-3^{1/10})\) = 11.6%
Hence, A model for the number of views, v, as a function of the number of days, d, since there were 22 views is \(v = 22(3)^{d/10}\) and the views increasing per day by 11.6%.
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30 35 23 22 28 39 21 Population 2 45 49 15 34 20 49 36 Use this data to find the 90% confidence interval for the true difference between the population means. Assume that both populations are normally distributed. Step 3 of 4 : Calculate the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.
Answer:
(−14.850850 ; 0.565135)
Step-by-step explanation:
Confidence interval :
Xd ± Tcritical * Sd/√n
Population 1 :30 35 23 22 28 39 21
Population 2 : 45 49 15 34 20 49 36
d = -15,-14,8,-12,8,-10,-15
The mean of d, Xd = Σx / n = - 7.14285714
The standard deviation of the difference, Sd = 10.4948967 (using calculator)
Sample size, n = 7
Tcritical at 90%, df = 7 - 1 = 6
Tcritical = 1.943176
Confidence interval :
- 7.14285714 ± 1.943176 * 10.4948967/√7
Confidence interval :
- 7.14285714 ± 7.7079925
(−14.850850 ; 0.565135)
At which points is the function continuous?
The function is continuous in the domain x ≥ 3/4
At which points is the function continuous?Here we have a root function:
f(x) = ⁴√(4x - 3)
This is an even degree root function, so we have problems when the argument is negative.
Then the allowed values (where the function is defined, and thus, continuous) are:
4x - 3 ≥ 0
4x ≥ 3
x ≥ 3/4
There the function is continuous.
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Find the area of a circle with a radius of
7
7start color #11accd, 7, end color #11accd.
Either enter an exact answer in terms of
�
πpi or use
3.14
3.143, point, 14 for
�
πpi and enter your answer as a decimal.
The area of a circle is calculated using the formula:
A = πr^2
Where A is the area and r is the radius of the circle.
In this case, the radius is given as 7. Substituting the value into the formula:
A = π(7)^2
A = π(49)
A = 49π
The exact area of the circle is 49π square units.
\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)
♥️ \(\large{\textcolor{red}{\underline{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)
How to write 8.517 in two other forms?
Answer:
8517/1000 or 8.517 = (8 x 1) + (5/10) + (1/100) + (7/1000)
Step-by-step explanation:
first one is an improper fraction and the other is in it's expanded form.
What are the zeros of the function g(x) = (x + 6) (x – 4)(x + 2) ?
9514 1404 393
Answer:
x in {-6, -2, 4}
Step-by-step explanation:
The zero product rule tells you that a product will be zero if and only if one of the factors is zero. These binomial factors are zero when x has a value that is opposite the constant of the binomial.
x +6 = 0 ⇒ x = -6
x -4 = 0 ⇒ x = 4
x +2 = 0 ⇒ x = -2
The zeros of the function are the x-values -6, -2, and 4.
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than you!
The highest height for the daily rainfall were for 5 and 6 inches
How to Interpret Dot Plots?Dot plots are used to present data in the form of points or small circles. It is similar to a simplified histogram or bar graph in that the height of the bar made up of points represents the numerical value of each variable. Dot plots are used to represent small amounts of data.
From the given dot plot, we see the number of times for each height of rainfall.
Thus, we see that the highest number of times of rainfall height was from that of 5 and 6 inches.
Thus, we conclude those were the highest heights for the daily rainfall.
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HELP RIGHT NOW! I REALLY NEED HELP AND MY ASSIGNMENT IS DUE TOMMOROW
Answer:
area = 6 units²
perimeter = 10.06 units
Step-by-step explanation:
area = 1/2bh
area = 1/2(4)(3) = 6 units²
perimeter = 4.123 + 2.236 + 4.243 = 10.06 units
Molly's scout troop sold 148 boxes of cookies last month and 165 boxes this month. Find the percent of increase, rounded to the nearest tenth of a percent.
The percent of the increase, rounded to the nearest tenth of a percent, concerning the sales of boxes of cookies that Molly sold last month and this month, is 11.5%.
How is the percentage increase determined?The percentage increase can be determined by finding the difference or the amount of increase in sales.
This difference is divided by the previous month's sales and multiplied by 100.
The total number of boxes of cookies Molly's Scout Troop sold last month = 148
The total number sold this month = 165
The increase = 17 (165 - 148)
Percentage increase = 11.5% (17 ÷ 148 x 100)
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If Mrs.Miller deposits $10,000 into a savings account for 5 years at 5% interest rate ,What is the total amount of money she will make?
I = C₀*i*t
I = 10.000*0,05*5
I = 2.500
C = C₀ + I
C = 10.000 + 2.500
C = 12.500
1. Which one of the following is NOT true about polynomial functions f(x) and g(x) if deg (f) = man * d deg * (g) =n?
A. deg (f + g) = max(m, n)
B. deg (f_{g}) <= m + n
C. If g is a factor of f then deg( f )<= m
D. The deg (f ^ 3) = 3m
The option that is not true about polynomial functions is:
Option D. The deg (f ^ 3) = 3m
How to Interpret the degree of Polynomial functions?For polynomial functions f(x) and g(x), if deg(f) = m * deg(g) = n, then we have the following:
Option A: deg(f + g) = max(m, n)
This is true because we know that the degree of the sum of two polynomials is the maximum of their individual degrees.
Option B: deg(f * g) <= m + n
This is true because we know that the degree of the product of two polynomials is at most the sum of their individual degrees.
Option C: If g is a factor of f, then deg(f) <= m
This is true because If g is a factor of f, it means that f can be divided by g without leaving a remainder. In this case, the degree of f is less than or equal to the degree of g.
D. The deg(f ^ 3) = 3m
This is not true because the degree of the polynomial f raised to the power of 3 is not necessarily equal to 3 times the degree of f. The degree of f^3 will depend on the individual terms and their exponents.
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The table shows three transactions and the resulting account balance in a bank account, except some numbers are missing. Fill in the missing numbers.
Answer: A
Step-by-step explanation: Pic is attached. Hope this helps.
given that l has been defined to refer to a list, write an expression whose value is a set containing all the elements of l.
For given that L has been defined to refer to a list , the expression whose value is a set containing all the elements of L is
set = { 1,2,3,4}
Writing List in Python :Lists are used to store multiple items in one variable. Lists are one of Python's four built-in data types used to store collections of data, the other three being tuples, sets and dictionaries, all of different qualities and uses.
A list is a container which holds comma-separated values (items or elements) between square brackets where items or elements need not all have the same type.
#Programme representation
Input:
#Python code
#A list L is initialised
L = [ 3,4,2,1 ]
#set L containing all elements of list L
print(str(set(L)))
Output:
{ 1, 2, 3, 4 }
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Given that f(x) = x + 4 and g(x) = x + 7, find (g - 4(x).
Answer: The value of \((g - f)(x)=4 .\)
Step-by-step explanation:
Given functions : \(f(x) = x + 4\) and \(g(x) = x + 7\)
To find : \((g - f)(x)\)
Difference between two functions: \((u-v)(x)=u(x)-v(x)\)
Then, \((g-f)(x)=g(x)-f(x)\)
\(=(x+7)-(x+4)=x+7-x-4\\\\=7-4=3\)
Hence, the value of \((g - f)(x)=4 .\)
HELP!!!!!! . GIVEN THE INFORMATION BELOW, Fino AC
B B BETWEEN A AND C
• AC=2x +8
• AB=48-16
BC=32-6
Answer:the answer is B
Step-by-step explanation:
What is the value of -x² - 4x - 11 if x = -3
Answer:
-74 your welcome
Step-by-step explanation:
Simplify this expression: 4(1-2b)+7b-10
Answer:
-b-6
Step-by-step explanation:
4(1-2b)+7b-10 multiply inside the parenthesis with 4
4 - 8b + 7b - 10 now add like terms
-b - 6
Answer:
-b-6
Step-by-step explanation:
\(4(1-2b)+7b-10\\\)
Expand
\(4\left(1-2b\right):\quad 4-8b\)
\(=4-8b+7b-10\)
Simplify
\(\mathrm{Simplify}\:4-8b+7b-10:\\\\\quad -b-6\)
To solve you must subtract 25 from both
sides, which means x =
This are the answers one of the is the real answer
65
25
15
12
Answer:
What are you subtracting 25 from?
!!!HELPPP PLEASE ASAP!!! I don’t know how to solve this problem nor where to start? Can some please help me out and explain how you got the answer please. Thank you for your time.
Step-by-step explanation:
a)
0.00000000007
b)
0.00000001
1.
(03.03 MC)
A biologist is studying the growth of a particular species of algae. She writes the following equation to show the radius of the algae, f(d), in mm, after d days:
f(d) = 11(1.01)d
Part A: When the biologist concluded her study, the radius of the algae was approximately 11.79 mm. What is a reasonable domain to plot the growth function? (4 points)
Part B: What does the y-intercept of the graph of the function f(d) represent? (2 points)
Part C: What is the average rate of change of the function f(d) from d = 2 to d = 7, and what does it represent? (4 points)
Answer:
sept one
Step-by-step explanation:
The inside diameter of a randomly selected piston ring is a normally distributed random variable with mean 12 cm and standard deviation 0.04 cm. (a) What is the diameter that is exceeded by only 5% of the piston rings
Answer:
\(x=12.07\)
Step-by-step explanation:
From the question we are told that:
Mean \(\=x =12cm\)
Standard deviation \(\sigma=0.04\)
Significance level \(\alpha=5\%=0.05\)
Therefore
Confidence level \(95\%=0.95\)
From table \(P(z<1.645)=0.95\)
Generally the equation for Z-score is mathematically given by
\(z=\frac{x-\mu}{\sigma}\)
\(x=z\sigma+\mu\)
\(x=1.645*0.04+12\)
\(x=12.07\)