Answer:
JL = 6 units
Step-by-step explanation:
It is given that,
K lies on line segment JL.
We have, JK=5x+7,JL=2x+8, and KL=4.
JL = JK + KL
2x+8 = 5x+7 + 4
Taking like terms together.
8-7-4=5x-2x
-3 = 3x
x = -1
Put x = -1 in JL = 2x+8. So,
JL = 2(-1)+8
JL = 6
Hence, the length of JL is 6 units.
After 6 days, the mass m, in grams, of
100 grams of a certain radioactive
element is given by the function
m(t) = 100(0.97). To the nearest percent,
what is the weekly decay rate of the
element?
A 3%
C 21%
B 19%
D 81%
Answer:
3%
Step-by-step explanation:
Sorry I have no step by step explanation at this time.
2x+7=3x+4
step by step
Answer:
3=x or x=3
Step-by-step explanation:
2x+7=3x+4
-2x+2x7=-2x+3x+4
7=x+4
7-4=x+4-4
3=x or x=3
Mr. Lincoln buys juice and water for the school picnic. A pack of 8 juice boxes ca
$5. A pack of 6 water bottles costs $3. Mr. Lincoln spends $95 for 170 juice boxes
and bottles of water.
a. Choose variables for the two unknown quantities in the problem and tell wha
each variable represents.
b. Use the variables you chose in problem 3a to write an equation for the amour
of money Mr. Lincoln spends.
c. Use the variables you chose in problem 3a to write an equation for the numbe
of drinks Mr. Lincoln buys.
d. Solve the system of equations. How many packs of juice boxes and how many
packs of water does Mr. Lincoln buy? Show your work.
SOLUTION
my
Answer:
5x + 3y = 95
8x + 6y = 170
x = 10 ; y = 15
Step-by-step explanation:
Let :
x = pack of juice boxes
y = pack of water bottles
Pack of juice box = $5
Pack of water bottles = $3
Amount of money spent :
5x + 3y = $95
Number of drinks purchased :
8x + 6y = 170
Using both equations ;
5x + 3y = 95 - - - (1)
8x + 6y = 170 - - - (2)
Multiply (1) by 6 and (2) by 3
30x + 18y = 570
24x + 18y = 510
Subtract :
6x = 60
x = 60 / 6
x = 10
Put x = 10 in (1)
5(10) + 3y = 95
50 + 3y = 95
3y = 95 - 50
3y = 45
y = 45 / 3
y = 15
x = 10 ; y = 15
What is an equation example?
The definition and explanation of an equation are given below with an example.
in mathematics, an equation is defined as an expression that expresses equality between 2 quantities or expressions. We use equations quite a lot in our daily lives whenever we have to equate two quantities and find out how they are equal. These are used in all branches of science because of the huge purpose they serve.
in simple words it tells what we have on the Left-Hand Side of the "=" sign is the same as what we have on the right-hand side of the statement. Some examples of equations are-
E²=m²c⁴+p²c²
x²+3x-1=0
70 oranges= 7 oranges × 10 oranges
Learn more about equations on
https://brainly.com/question/29657983?referrer=searchResults
#SPJ4
The LSRL after an exponential transformation is log ŷ = 0.986 + 3.149x. What is the exponential form of the regression?
ŷ = 1409.29 • 9.68278x
ŷ = 0.986 • 9.68278x
ŷ = 9.68278 •1409.29x
ŷ = 0.986 • 3.149x
ŷ = 9.68278 • 3.149x
The exponential form of the regression, after an exponential transformation, is:ŷ = 9.68278 *\(e^(0.986 * x)\)None of the options provided match the correct exponential form.
In this case, the LSRL (Least Squares Regression Line) equation in logarithmic form is given as:
log ŷ = 0.986 + 3.149x
To convert this equation to exponential form, we need to take the exponential (base e) of both sides:
\(e^(log y) =\)\(e^(0.986 + 3.149x)\)
\(y= e^0.986 * e^(3.149x)\)
Simplifying further, we can write it as:
ŷ = 9.68278 * e^(3.149x)\(y = 9.68278 * e^(3.149x)\)
Therefore, the correct exponential form of the regression equation is ŷ = 9.68278 * \(e^(3.149x).\)
Learn more about exponents here:
https://brainly.com/question/30565877
#SPJ8
When 4 × 102 is divided by 2 × 10–2 the resulting quotient has 10 raised to the power of
Answer:
2038 that's a answer po because hindi kasali ang 10
The exponent is represented as \(A=2*10^{4}\) where the resulting quotient has 10 raised to the power of 4.
Given data:
To perform the given division of \(A=\frac{4*10^{2}}{2*10^{-2}}\) , we can use the properties of exponents and arithmetic operations.
When dividing numbers with the same base (in this case, 10), we subtract the exponent in the denominator from the exponent in the numerator:
So, the exponent is represented as A.
The exponential form of a number is a way of representing a number using exponents, where the base is typically a number greater than 1.
Now, the value of \(A=\frac{4*10^{2}}{2*10^{-2}}\).
Now, simplify the exponent expression:
\(A=\frac{4*10^{2+2}}{2}\)
\(A=2*10^{4}\)
Hence, the exponential form is \(A=2*10^{4}\).
To learn more about exponential form, refer:
https://brainly.com/question/29337692
#SPJ3
A 2-pound bag of asparagus costs $5.44. What is the price per ounce?
Answer:
0.17 per ounce
Step-by-step explanation:
To find the price per ounce, divide the price by the number of ounces.
price/ number of ounces
A 2 pound bag costs $5.44. We need to find out how many ounces are in 2 pounds.
Each pound has 16 punches. Therefore, 2 pounds will have 32 ounces (16 ounces * 2 pounds=32 ounces).
Now we can find the price per ounce by dividing the price by the number of ounces.
price/ounces
We know the bag is 2 pounds, which is equal to 32 ounces. We also know the bag costs $5.44
price= $5.44
ounces= 32 ounces
$5.44/ 32 ounces
$0.17 / ounces
The asparagus costs 0.17 per ounce.
, evaluate and simplify.
The difference quotient of the function f(x) = 4x² - 5x is 8x + 4h - 5.
What is the difference quotient of the given function?The formula for difference quotient is expressed as:
\(\frac{f(x+h)-f(x)}{h}\)
Given the function in the question:
f(x) = 4x² - 5x
To solve for the difference quotient, we evaluate the function at x = x+h:
First;
f(x + h) = 4(x + h)² - 5(x + h)
Simplifying, we gt:
f(x + h) = 4x² + 8hx + 4h² - 5x - 5h
f(x + h) = 4h² + 8hx + 4x² - 5h - 5x
Next, plug in the components into the difference quotient formula:
\(\frac{f(x+h)-f(x)}{h}\\\\\frac{(4h^2 + 8hx + 4x^2 - 5h - 5x - (4x^2 - 5x)}{h}\\\\Simplify\\\\\frac{(4h^2 + 8hx + 4x^2 - 5h - 5x - 4x^2 + 5x)}{h}\\\\\frac{(4h^2 + 8hx - 5h)}{h}\\\\\frac{h(4h + 8x - 5)}{h}\\\\8x + 4h -5\)
Therefore, the difference quotient is 8x + 4h - 5.
Learn more about difference quotient here: https://brainly.com/question/6200731
#SPJ1
decide whether inductive reasoning or deductive reasoning is used to reach the conclusion: "what goes up must come down. the ball went up. it will come down."
The statement ""what goes up must come down. the ball went up. it will come down." can be reached through a deductive reasoning.
What is a deductive reasoning?The mental process of forming deductive deductions is known as deductive reasoning. An inference is deductively valid if its conclusion follows logically from its premises, i.e. if the premises cannot be true while the conclusion is false.
The primary distinction between inductive and deductive thinking is that inductive reasoning seeks to develop a hypothesis, whereas deductive reasoning seeks to test an existing theory. Inductive thinking proceeds from individual observations to broad generalizations, whereas deductive reasoning proceeds in the other direction.
In conclusion, the correct option based on the information is a deductive reasoning.
Learn more about deductive reasoning on:
https://brainly.com/question/7284582
#SPJ1
Let n be the last digit of your register number. Consider the initial value problem y" + 4y = 4un (t), y(0) = 0, y'(0) = 1.
a. Find the Laplace transform of the solution y(t).
b. Find the solution y(t) by inverting the transform.
To solve the initial value problem y" + 4y = 4u_n(t), where y(0) = 0 and y'(0) = 1, we will follow these steps:
a. Find the Laplace transform of the solution y(t).
The Laplace transform of the given differential equation can be obtained using the properties of the Laplace transform. Taking the Laplace transform of both sides, we get:
s^2Y(s) - sy(0) - y'(0) + 4Y(s) = 4U_n(s),
where Y(s) represents the Laplace transform of y(t) and U_n(s) is the Laplace transform of the unit step function u_n(t).
Since y(0) = 0 and y'(0) = 1, the equation becomes:
s^2Y(s) - s(0) - 1 + 4Y(s) = 4U_n(s),
s^2Y(s) + 4Y(s) - 1 = 4U_n(s).
Taking the inverse Laplace transform of both sides, we obtain the solution in the time domain:
y''(t) + 4y(t) = 4u_n(t).
b. Find the solution y(t) by inverting the transform.
To find the solution y(t) in the time domain, we need to solve the differential equation y''(t) + 4y(t) = 4u_n(t) with the initial conditions y(0) = 0 and y'(0) = 1.
The homogeneous solution to the differential equation is obtained by setting the right-hand side to zero:
y''(t) + 4y(t) = 0.
The characteristic equation is r^2 + 4 = 0, which has complex roots: r = ±2i.
The homogeneous solution is given by:
y_h(t) = c1cos(2t) + c2sin(2t),
where c1 and c2 are constants to be determined.
Next, we find the particular solution for the given right-hand side:
For t < n, u_n(t) = 0, and for t ≥ n, u_n(t) = 1.
For t < n, the particular solution is zero: y_p(t) = 0.
For t ≥ n, we need to find the particular solution satisfying y''(t) + 4y(t) = 4.
Since the right-hand side is a constant, we assume a constant particular solution: y_p(t) = A.
Plugging this into the differential equation, we get:
0 + 4A = 4,
A = 1.
Therefore, for t ≥ n, the particular solution is: y_p(t) = 1.
The general solution for t ≥ n is given by the sum of the homogeneous and particular solutions:
y(t) = y_h(t) + y_p(t)
y(t) = c1cos(2t) + c2sin(2t) + 1.
Using the initial conditions y(0) = 0 and y'(0) = 1, we can determine the values of c1 and c2:
y(0) = c1cos(0) + c2sin(0) + 1 = c1 + 1 = 0,
c1 = -1.
y'(t) = -2c1sin(2t) + 2c2cos(2t),
y'(0) = -2c1sin(0) + 2c2cos(0) = 2c2 = 1,
c2 = 1/2.
To learn more about inverse : brainly.com/question/30339780
#SPJ11
please help !!!!!!!!!
Answer:
a) 1
b) 0
c) hundreths
d) .8
Step-by-step explanation:
The order, for this problem, is:
hundreds, tens, ones,
then after the decimal
tenths, hundredths, thousandths, ten thousandths, etc.
as for step d, imagine .08 as 8/100, and 8/10. Would you rather have 8 slices of pizza out of 100 slices, or 8 out of 10 slices of the whole?
I hope I helped!
Can someone help me?
Answer:
C. -36 3/10
Step-by-step explanation:
4 2/5 = 22/5
22/5 = 4.4
4.4(-8.25)
-36.3 = -36 3/10
Have a great day :3
A gold, a silver, and a bronze medal are awarded in an Olympic event. In how many possible ways can the medals be awarded for a 200-meter sprint in which there are 10 runner?
Answer:
720 possible ways
Step-by-step explanation:
The gold is awarded to the first position, the silver is awarded to the second position while the bronze is awarded to the third position.
The first position can be taken by any of the 10 runners
Now, the second position can be taken by remaining 9 runners
while the third position can be taken by the renaming 8 runners.
Thus, the number of ways in which these medals can be awarded = 10 * 9 * 8 = 720 ways
Mathematics: What is a mean
A triangle has a 35° angle, a 55° angle, and a side 6 centimeters in length,
Select True or False for each statement about this type of triangle.
True
False
The triangle might be an isosceles triangle.
The triangle might be an acute triangle.
The triangle must contain an angle measuring 90°.
O
Answer:
f
f
v
Step-by-step explanation:
find the domain of each function. (enter your answers in interval notation.) (a) g(t) = sin(e^−t) (b) g(t) = √1 − 5^t
In order for a function to be defined, the inputs must fall within the domain of the function. When working with functions with multiple inputs, the domain of the outside function depends on the inside functions.
In (a) g(t) = sin(e^−t), the inside function is e^−t, which is defined over all real numbers. Therefore, the outside function sin needs to include all real numbers as well in order to be defined, making the domain of g(t) all real numbers.
In (b) g(t) = √1 − 5^t, the inside function 5^t must be equal to or less than 1 in order for the outside function (square root) to be defined. Therefore, the domain for g(t) is all real numbers less than or equal to 0, or [-∞, 0).
To know more about domain click on below link :
https://brainly.com/question/29452843#
#SPJ11
Out of 300 people sampled, 33 received flu vaccinations this year. Based on this, construct a 95% confidence interval for the true population proportion of people who received flu vaccinations this year. Give your answers as decimals, to three places < p <
A 95% confidence interval for the true population proportion of people who received flu vaccinations this year is 0.067 < p < 0.133.
To construct a 95% confidence interval for the true population proportion of people who received flu vaccinations, we can use the formula:
CI = p ± z√((p(1-p))/n)
where:
CI is the confidence interval
p is the sample proportion (33/300 = 0.11)
z is the z-score associated with a 95% confidence level, which is approximately 1.96
n is the sample size (300)
Substituting the values, we get:
CI = 0.11 ± 1.96√((0.11(1-0.11))/300)
CI = 0.11 ± 0.043
CI = (0.067, 0.133)
Therefore, the 95% confidence interval for the true population proportion of people who received flu vaccinations is 0.067 < p < 0.133.
Learn more about confidence interval at https://brainly.com/question/30328824
#SPJ11
What is the respective name for perpendicular bisectors of the sides?.
Answer: circumcenter
Step-by-step explanation:
If you meant the point of intersection of the perpendicular bisectors, this should be your answer.
rudy wanted to drive a car that uses less gasoline, so he bought a hybrid. there is a proportional relationship between the volume of gasoline rudy's car uses when driving on the highway (in gallons), x, and the distance he drives it on the highway (in miles), y. x (gallons) y (miles) 1 25 2 50 3 75 4 100 what is the constant of proportionality? write your answer as a whole number or decimal.
The constant of proportionality for x gallons water and y miles is k = 25
The ratio connecting two given numbers in what is known as a proportional relationship is the constant of proportionality.
Constant ratio, constant rate, unit rate, constant of variation, and even rate of change are other names for the constant of proportionality.
A proportionate connection is simple to represent as a straight line on a coordinate plane. It is a straight line because it is directly proportional; the slope serves as the constant of proportionality.
The proportionate change along the x and y axes never varies, hence the slope or increase is constant.
According to the question,
x(gallons) y(miles)
1 25
2 50
3 75
4 100
As we know, If y is proportional to x
=> y ∝ x
=> y = kx , where k is constant of proportionality
Using the table,
when x = 1 => y = 25
=> 25 = k(1)
=> k = 25
To know more about Constant of Proportionality here
https://brainly.com/question/29126727
#SPJ4
Given that a randomly chosen flight arrives in Atlanta (ATL), what is the probability that it arrives on time?
Using the given percentage, it is found that there is a 0.877 = 87.7% probability that it arrives on time.
A probability is the number of desired outcomes divided by the number of total outcomes.Over a large sample, a percentage can be interpreted the same as a probability.In this question, over a large number of flights, 87.7% arrive on time in Atlanta. Hence, there is a 0.877 = 87.7% probability that it arrives on time.
For more on probabilities, you can check https://brainly.com/question/15536019
The annual salaries of all employees at a financial company are normally distributed with a mean Mu = $34,000 and a standard deviation Sigma = $4,000. What is the z-score of a company employee who makes an annual salary of $28,000?.
Answer:
see the attachment.
Answer:
C, -1.5
Step-by-step explanation:
edge
help fast pls! tysm, much appreciated
Answer: b. and c.
Step-by-step explanation:
\(\displaystyle\\Let\ arcsin\frac{-\sqrt{3} }{2} =x\ \ \ \ -\frac{\pi }{2} < x < \frac{\pi }{2}\\So,\\sin(arcsin\frac{-\sqrt{3} }{2} )=sin(x)\\\frac{-\sqrt{3} }{2}=sin(x )\\sin(x)=-\frac{\sqrt{3}}{2} \\\\x_1=\frac{4\pi }{3}+2\pi n\\\\ x_2=\frac{5\pi }{3} +2\pi n.\\\\ -\frac{\pi }{2} < x < \frac{\pi }{2},\\\\Hence,\\\\x_1=\frac{4\pi }{3} \\\\x_2=\frac{5\pi }{3} .\)
PLEASE HELP ME!!!!!!
Is the mean greater than, less than, or equal to the median? Explain your reasoning.
Answer:
equal to
Step-by-step:
Again, the mean reflects the slanted the most.
To summarize, generally if the distribution of data is slanted to the left, the mean is less than the median, which is often less than the mode. If the distribution of data is slanted to the right, the mode is often less than the median, which is less than the mean.
Answer:
Equal
Step-by-step explanation:
The median is the midmoint of all points (as many values below as above this value). The mean is the (sum of values) / (count of values). Since every value has the exact same count, the mean and median will be the same.
A store has two types of animal feed available. Type A contains 3 pounds of oats and 3 pounds of corn per bag. Type B contains 1 pound of oats and 7 pounds of
corn per bag. A farmer wants to combine the two types so that the resulting mixture has at least 18 pounds of oats and at least 54 pounds of corn. The store
only has 11 bags of type A feed and 12 bags of type B feed in stock. Type A costs $4 per bag, and type B costs $1 per bag. How many bags of each type should
the farmer buy to minimize her cost?
Note that the ALEKS graphing calculator can be used to make computations easier.
Type A feed:
Type B feed:
bag(s)
bag(s)
The farmer will purchase five bags of kind A and six bags of type B.
Per bag, Type A includes 9 pounds of oats and 3 pounds of maize.
Per bag, Type B includes 2 pounds of oats and 10 pounds of maize.
The farmer is looking for a blend that comprises at least 57 pounds of oats and 75 pounds of maize.
Allow the farmer to mix type A feed = x pounds.
and feed type B = y pounds
(9x + 2y) pounds of oats when blended
Corn amount when combined: (3x + 10y) pounds
Oats equation: 9x + 2y = 57 ———— (1)
Corn equation: 3x + 10y = 75 ————- (2)
Subtract equation (2) from equation (2) by multiplying it by three (1)
3(3x + 10y) - (9x + 2y) = 75×3 - 57
9x + 30y - 9x - 2y = 225 - 57
28y = 168
y = 6 bags
derived from the equation (1)
9x + 2×6 = 57
9x + 12 = 57
9x = 57 - 12
9x = 45
x = 5 bags
Because the business has 15 bags of each sort, each bag costs $4.
As a result, the cost of 5 bags of type A and 6 bags of type B is = (54) + (64)
= 20 + 24
= $44
The farmer intends to buy five bags of kind A and six bags of type B.
Learn more about mathematical expressions at
https://brainly.com/question/14070584
#SPJ1
I figured x equals a specific number in every single question involving something like this. X is on all sides, there's no given number.
The angle x of the triangle is 60 degrees.
How to find the angles in a triangle?A triangle is a polygon with three sides. The sum of angles in a triangle is equals to 180 degrees.
A triangle can be classified base on the sides and angles. For example equilateral triangle, scalene triangle and isosceles triangle.
Therefore, the angle x of the triangle can be found as follows:
x + x + x = 180
3x = 180°
divide both sides of the equation by 3
3x / 3 = 180 / 3
x = 180 / 3
x = 60 degrees.
learn more on triangle here: https://brainly.com/question/25950519
#SPJ1
Answer:
the person below or above me is the answer. Yeah
Step-by-step explanation:
plz help ...............................
Answer:
It is the right-angled triangle.
Step-by-step explanation:
According to the Pythagorean theorem, \(a^{2}+b^{2}=c^{2}\), which c is the longest side of the triangle.
So, \(27^{2}+36^{2}=45^{2}\) if the triangle is right angle.
\(LHS=27^{2} + 36^{2} = 2025\)
\(RHS=45^{2}=\)\(RHS=45^{2} = 2025\)
∵LHS=RHS
∴It is a right-angled triangle.
Answer:
The right angled triangle
The polygon below is a regular pentagon.
Calculate the size of the angle
X
Y
Z
x = 108
y = 36
z = 72
=============================================================
Explanation:
Check out the diagram below. I have added letters of x, y and z in places to help find the values of y and z. Note the triangle on top is isosceles (since a regular polygon has all sides equal; therefore the triangle on top has the top diagonal sides equal).
Before we find either y or z, let's find x.
For any regular polygon, the interior angles are all the same measure. They sum to 180(n-2). In this case, n = 5, so the angles sum to 180(5-2) = 540. Each individual interior angle is 540/n = 540/5 = 108 degrees
x = 108
Another way to find this interior angle is to first find the exterior angle. For any convex polygon (regular or not), the exterior angles always add to 360. When we talk about regular polygons, each individual exterior angle is 360/n. So in this case, we have 360/5 = 72 as one exterior angle. The adjacent interior angle is therefore x = 180-72 = 108. So there are two ways to find the measure of an interior angle.
--------
Referring to the diagram, specifically the isosceles triangle on top, we can see that it has angles of x, y and y. They add to x+y+y = x+2y. Set this equal to 180, plug in x = 108 and solve for y
x+2y = 180
108+2y = 180
2y = 180-108
2y = 72
y = 72/2
y = 36
--------
The bottom most triangle is a congruent copy of the triangle on top. We have another isosceles triangle with the same side lengths as before. This triangle also has x, y and y as mentioned above.
Notice the adjacent angles of y and z in the bottom left corner. They must add to 108 as this was the measure of the interior angle of a regular pentagon. So,
y+z = x
36+z = 108
z = 108-36
z = 72
Greg is building birdhouses in shop class. The amount of wood he has on hand determines how many birdhouses he can build. w = the amount of wood Greg has on hand b = the number of birdhouses Greg can build Which of the variables is independent and which is dependent?
Answer:
Step-by-step explanation:
w is the independent
b is the dependent
Think of it this way: the number of birdhouses depends on the amount of wood available.
Solve these pairs of equations (find the intersection point) 3x + 2y = 9 and 2x+ 3y = 6
The solution to the system of equations is (5, -3). To solve the system of equations 3x + 2y = 9 and 2x + 3y = 6, we can use the method of substitution.
We can solve one of the equations for one of the variables in terms of the other variable. For example, we can solve the second equation for x to get x = (6 - 3y)/2. Then, we can substitute this expression for x into the first equation and solve for y: 3(6 - 3y)/2 + 2y = 9
Simplifying this equation, we get: 9 - 9y + 4y = 18. Solving for y, we get: y = -3
Now that we have the value of y, we can substitute it into one of the original equations to solve for x. Using the first equation, we get: 3x + 2(-3) = 9
Simplifying this equation, we get: 3x = 15. Solving for x, we get: x = 5
Therefore, the solution to the system of equations is (5, -3).
To know more about substitution, refer here:
https://brainly.com/question/30284926#
#SPJ11
Find an equation for the surface obtained by rotating the line x = 4y about the x-axis.
The equation: \(\frac{x^{2}}{6^{2}}={y^{2}+z^{2}\), represents a circle with radius r = y = x/6, and the surface that results is a cone, as obtained with the help of surface of revolution.
What is surface of revolution?A surface created by rotating a two-dimensional curve about an axis is known as a surface of revolution. As a result, the final surface is always symmetric along the azimuth.Now,
If we consider the point (6y, y, 0) in the xy plane, it appears to be a circular path that is a cone when the curve is rotated about the x axis. The cone's equation takes the following form:
\(\frac{x^{2}}{c^{2}}=\frac{y^{2}}{a^{2}}+\frac{z^{2}}{b^{2}}\)
Given that x = 6y, we square x = 6y to give the equation the form shown above, which results in:
x² = (6y)²
x² = 36y²
Circular paths go parallel to the y-axis, hence the equation should be circular in nature. 36z² needs to be added, so:
x² = 36y² + 36z²
=> \(\frac{x^{2}}{6^{2}}={y^{2}+z^{2}\)
Hence, This equation represents a circle with radius r = y = x/6, and the surface that results is a cone, as obtained with the help of surface of revolution.
To learn more about Surface of revolution, refer to the link: https://brainly.com/question/14640419
#SPJ4