Answer:
y = -3/4x + 3
Step-by-step explanation:
lmk if you want an explanation
The sum of two numbers is 53 and the difference is 27. What are the numbers?
Answer:
Step-by-step explanation:
Let's call the two numbers x and y.
The sum of the two numbers is 53, so x + y = 53.
The difference between the two numbers is 27, so x - y = 27.
We can solve for the values of x and y by solving this system of equations.
First, let's add the two equations to eliminate the y term:
x + y + x - y = 53 + 27
2x = 80
x = 40
Substituting this value for x back into the first equation, we get:
40 + y = 53
y = 13
Therefore, the two numbers are 40 and 13.
Step-by-step explanation:
The sum of two numbers is 53 and their difference is 27. What are the two numbers? Let's start by calling the two numbers we are looking for x and y.
The sum of x and y is 53. In other words, x plus y equals 53 and can be written as equation A:
x + y = 53
The difference between x and y is 27. In other words, x minus y equals 27 and can be written as equation B:
x - y = 27
Now solve equation B for x to get the revised equation B:
x - y = 27
x = 27 + y
Then substitute x in equation A from the revised equation B and then solve for y:
x + y = 53
27 + y + y = 53
27 + 2y = 53
2y = 26
y = 13
Now we know y is 13. Which means that we can substitute y for 13 in equation A and solve for x:
x + y = 53
x + 13 = 53
X = 40
Summary: The sum of two numbers is 53 and their difference is 27. What are the two numbers? Answer: 40 and 13 as proven here:
Sum: 40 + 13 = 53
Difference: 40 - 13 = 27
Hope it helps you
Mark me Brainliest :)You are conducting a correlation analysis of body mass index and exercise time on a treadmill. You find the correlation is -0.67. Which of the following is the correct interpretation of this finding? Group of answer choices Approximately 67% of the study subjects had a good treadmill time. Approximately 67% of the study subjects had a poor treadmill time. As body mass index increases treadmill time decreases. As body mass index increases treadmill time increases.
The correct option is (3),Hence ,As body mass index increases treadmill time decreases are correct .
What is the correlation?Correlation is a statistical measure that expresses the extent to which two variables are linearly related (meaning they change together at a constant rate). It's a common tool for describing simple relationships without making a statement about cause and effect.When two variables rise or decrease simultaneously, there is a positive correlation; when there is a negative correlation, one variable increases as the other falls.
What is Negative correlation,in a brief?When two variables are correlated negatively, the other variable's value falls as the value of the first variable rises. The correlation coefficient, which expresses correlation on a scale from +1 to -1, is used. Numbers less than 0 indicate a negative connection.
According to above statement for a negative correlation,
According to question ,
Correlation = -0.67 that is, given correlation is negative or less than 0.
So, correct choice of answer is body mass index increases treadmill time decrease.
Learn more about correlation here:
https://brainly.com/question/30116167
#SPJ1
The ratio of the exterior and interior angle of a regular polygon is 2:3. Find the number of sides in the polygon.
Answer:
5 sides
Step-by-step explanation:
the sum of the interior angle and exterior angle = 180°
sum the parts of the ratio, 2 + 3 = 5 parts , then
180° ÷ 5 = 36° ← value of 1 part of the ratio
exterior angle = 2 × 36° = 72°
the sum of the exterior angles of a polygon = 360°
since the polygon is regular then the exterior angles are congruent , so
number of sides = 360° ÷ 72° = 5
PLEASE HELP ME FAST!!!!!
Below are the data collected from two random samples of 500 American adults on the number of hours they work per day (rounded to the nearest hour):
Number of hours of work per day 6 7 8 9 10
Sample A: Number of adults 60 90 145 150 55
Sample B: Number of adults 70 80 140 145 65
Ryan concludes that adults spend a mean of 8 hours working each day. Malia thinks the mean is 9 hours. Who is correct—Ryan or Malia? Explain your answer in two or three sentences. Make sure to use facts to support your answer. (10 points)
The average number of hours that adults spend working each day is 8 hours and Ryan is correct because he got the average of 8 right.
We know that,
The sample mean is a statistic that is computed by taking the arithmetic mean of the values of a variable in a sample. If the sample is taken from probability distributions with a shared expected value, the sample mean is an estimator of that value.
The mean is gotten from the formula;
x' = ∑x/n
Number of hours of work per day are; 6, 7, 8, 9 and 10
Thus; sum up all of it
∑x = 6 + 7 + 8 + 9 + 10
∑x = 40
Mean is; x' = 40/5
x' = 8
Since Ryan concluded that the average is 8 hours,
Therefore,
We can say that Ryan is correct.
Read more about mean of data at;
brainly.com/question/24245867
#SPJ1
The cost to rent a moving yan for a day is an initial cost of $29 plus $0.35 per mile driven, Find a function to model the cast of the moving van rental
based on the initial cost and miles driven
Hello!
miles driven = x
the initial cost = 29
f(x) = 29 + 0.35x
A rectangular rug measure 8 feet long and 12 feet wide what's the area
answer-
the area of the rectangular rug is 96in!
explanation-
area will always be LxW, so 8x12=96!!
Paul is playing a board game and rolls two number cubes. Let A = {the sum of the number cubes is odd}, and let B = {the sum of the number cubes is divisible by 4}. List the outcomes in A ∪ B.
The batch 3,5,7,9,11 represents items in set A which are the sums that are odd. For instance, rolling a 2 and a 3 leads to 2+3 = 5 which is an odd number sum.
The batch 4,8,12 represents the sums that are divisible by 4, ie they are multiples of 4. For instance: 2+6 = 8 is a multiple of 4.
The notation A U B means "A union B". Set union has us combine the two sets together to form one single set as indicated above. We toss out any duplicate entries. In this case, there are no duplicates because sets A and B have nothing in common. This means sets A and B are disjoint or mutually exclusive. If an item is in set A, then it cannot be in set B, and vice versa.
Optionally you can sort the items from smallest to largest getting A U B = {3,4,5,7,8,9,11,12}, but I chose to list 3,5,7,9,11 first to show that those items all belonged originally to set A, and kept 4,8,12 separate as well.
What is the are of the given figure.
Answer:
192 square inches
Step-by-step explanation:
You can separate this figure into two separate figures; a triangle with a height of 6 inches and an unknown base, and a rectangle with a height of 9 inches and an unknown width. The triangle is conveniently separated into two right triangles, which you can use the Pythagorean Theorem to find the base of.
\(x=\sqrt{10^2-6^2}=\sqrt{100-36}=\sqrt{64}=8\)
This means that the base length of the large triangle is 8*2=16. With this, you can now calculate the area of everything. The area of the large triangle is 16*6/2=48 square inches, while the area of the rectangle is 9*16=144. Adding these together, you get a total area of 192 square inches. Hope this helps!
Expand and simplify (2x + 5)2
Answer: 4x +10
Step-by-step explanation:
Distribute the 2 to both terms
2*2x + 2*5
4x + 10
Evaluate the expression y2-y1/x2-x1 for the pairs (-7,-8) and (-5,2).
Algebra
Answer:
Slope (M) 5.000000
Distance (D) 10.198039
Δx 2.00
Δy 10.00
Step-by-step explanation:
help we just learned this today but idk:(:
Answer:
The hypotenuse is always the shortest side length. (False)
n a certain country the heights of adult men are normally distributed with a mean of 70.4 inches and a standard deviation of 2.6 inches. The country's military requires that men have heights between 66 inches and 77 inches. Determine what percentage of this country's men are eligible for the military based on height.
Approximately 94.90% of the men in the country are eligible for the military based on height.
What is Z -score?A Z-score is defined as the fractional representation of data point to the mean using standard deviations.
z-score = (X-ц )/σ
First, we need to standardize the values of 66 and 77 using the given mean and standard deviation:
Z(66) = (66 - 70.4) / 2.6 = -1.69
Z(77) = (77 - 70.4) / 2.6 = 2.54
The percentage of the area under the standard normal distribution curve is between -1.69 and 2.54.
Using a standard normal distribution table, we can find that the area to the left of Z = -1.69 is 0.0455 and the area to the left of Z = 2.54 is 0.9945.
Therefore, the area between Z = -1.69 and Z = 2.54 is:
0.9945 - 0.0455 = 0.9490
This means that approximately 94.90% of the men in the country have heights between 66 inches and 77 inches.
Learn more about the z-score here:
brainly.com/question/13793746
#SPJ1
36 divided by m over x times 9
Answer:
Step-by-step explanation:
4/mx
Dividing fractions word problems, please help I need it........
Answer:
25
Step-by-step explanation:
l x w = h
25 x 7.2 = 180
Estimate the sum of 379+409=
Answer:
Round both numbers to 1 significant figure.
400+400=800
800 is the answer.
In a family with 77 children, excluding multiple births, what is the probability of having exactly 22 girls
Answer:
22/77
Step-by-step explanation:
just put the probable amount over the total amount for these
An experiment was used to test a new migraine medicine. Each participant took either the new medicine or a placebo
then waited for one hour to see if the headache went away or remained. The results are compiled in the contingency
table below. Use the table to answer the questions.
Went Away| Medicine| Placebo
Remained|. 120. |. 68
18. | 44
Your answers should be exact numerical values.
There were
participants whose headache remained.
The probability of randomly selecting an individual whose headache remained is
There were
participants whose headache remained and took a placebo.
The probability of randomly selecting an individual whose headache remained and took a placebo is
1) Number of participants whose headache remained is: 62
2) The probability of randomly selecting an individual whose headache remained is: 0.4133
3) The probability of randomly selecting an individual whose headache remained and took a placebo is: 0.2933
How to find the probability of random selection?From the table, we have the parameters as:
Number of participants that took medicine and headache went away = 120
Number of participants that took placebo and headache went away = 68
Number of participants that took and headache remained = 18
Number of participants that took placebo and headache remained = 44
1) Number of participants whose headache remained = 18 + 44 = 62
2) The probability of randomly selecting an individual whose headache remained is:
62/(62 + 120 + 68)
= 62/150
= 0.4133
3) The probability of randomly selecting an individual whose headache remained and took a placebo is:
44/150 = 0.2933
Read more about probability of random selection at: https://brainly.com/question/251701
#SPJ1
Bridget Riley was just one of many artists associated with the 1960's 'Op Art' Movement. True or false
Answer:
True
Explanation:
Bridget Riley was one of the most prominent artists associated with the 1960s 'Op Art' movement, which was an art movement that explored optical illusions and effects to create abstract art that played with the viewer's perception. However, there were many other artists associated with this movement, including Victor Vasarely, Richard Anuszkiewicz, and Yaacov Agam, among others.
What is the value of r
Find the missing length of the triangle.
Hey there!
Solve using pythagoras theorem (it's given that is triangle is right angled. Pythagoras theorem only works in the case of right triangles) ⇨ Hypotenuse² = Base² + Altitude ²
Here,
Base = 9 mm
Hypotenuse = 15 mm
Altitude = b
Hypotenuse² = Base² + Altitude ²
15² = 9² + b²
225 = 81 + b²
225 - 81 = b²
144 = b²
√144 = b
12 mm = b
Hope it helps ya!
An odometer show that a car has traveled 40,000 miles by January 1, 2020. The car travels 16,000 miles each year. Write an equation that represents the number y of miles on the car’s odometer x years after 2020.
y = __
The equation will be \(y=40000+16000*x\)
How do you resolve a two-variable equation?Solve one of the equations for a particular variable. After that, insert that into the other equation and find the variable there. To find the value for the other variable, enter that value into either equation.
Two variables are used in what kind of equation?Equations come in two varieties: identities and conditional equations. All possible values of the variables result in an identity. Only certain combinations of the variables' values make a conditional equation true. Two expressions joined by the equals symbol ("=") form an equation.
To know more about identities visit:-
brainly.com/question/14681705
#SPJ1
5. Box A contains one white ball and two red balls. Box B contains one white ball and three red balls. A ball is picked at random from box A and put into box B and mixed around. A ball is then picked at random from box B. What is the probability that this final pick is white
Answer: 7/12
Step-by-step explanation:
given data:
Box A
white ball = 1
red ball = 2
total ball = 3.
Box B
white ball = 1
red ball = 3
total ball = 4
Probability of picking a white ball as the final pick.
= 1/3 + 1/4
get the LCM = 12
= 4*1 + 1*3 /12
= 4 + 3 /12
= 7/12
Is a triangle with side lengths 23,30 &19 a right triangle show why or why not . Please need asap! :)
Step-by-step explanation:
To determine whether a triangle is a right triangle, we can use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.
Let's denote the three sides of the given triangle as a = 23, b = 30, and c = 19. We can check if these side lengths satisfy the Pythagorean theorem as follows:
c^2 = a^2 + b^2
19^2 = 23^2 + 30^2
361 = 529 + 900
Since 361 is not equal to 529 + 900, we can see that the given triangle is not a right triangle.
Find the perioa
equation.
llowing
y = 2 cos(5x + 3) - 6
77
Period = [2]T
Give your answer in simplest form.
Answer:
In the equation y = 2 cos(5x + 3) - 6, we can ignore the coefficients 2 and -6 for the purposes of calculating the period because they do not change the period. They only change the amplitude (2) and vertical shift (-6) of the function.
The coefficient 5 in front of x inside the cosine function affects the period of the function. It is a horizontal compression/stretch of the graph of the function.
The period of the basic cosine function, y = cos(x), is 2π. When there is a coefficient (let's call it b) in front of x, such as y = cos(bx), the period becomes 2π/b.
So, in your case, b = 5, so the period T of the function y = 2 cos(5x + 3) - 6 is:
T = 2π / 5
This is the simplest form for the period of the given function.
Select all true statements (pick 3)
A. ∠3 ≅ ∠2 because they are alternate interior angles.
B. m∠1 + m∠3 = 180 because they form a straight angle.
C. ∠3 ≅ ∠6 because they are alternate interior angles.
D. ∠1 and ∠6 are supplementary because ∠3 ≅ ∠6 and m∠1 + m∠3 = 180.
E. ∠1 ≅ ∠3 because they are vertical angles.
Examining the figure, the correct options are
B. m∠1 + m∠3 = 180 because they form a straight angle.C. ∠3 ≅ ∠6 because they are alternate interior angles.D. ∠1 and ∠6 are supplementary because ∠3 ≅ ∠6 and m∠1 + m∠3 = 180.What are congruent angles?Two angles are said to be congruent when they are equal to each. The symbol to represent congruency is ≅
The following angles are congruent in the figure
∠3 ≅ ∠6 alternate interior angles.∠2 ≅ ∠6 corresponding anglesWhen are corresponding angles said to be equal ?Corresponding angles refers to angles that are in a position that are in matching position to another angle.
Corresponding angles are said to be equal when there are parallel lines intersected across by a line called transversal line.
Learn more on angles :
https://brainly.com/question/29247347
#SPJ1
study the two equilateral triangles shown.By what factor is Triangle 1 reduced to form Triangle 2?
ANSWER
0.75
EXPLANATION
We have that the two triangles are equilateral, which implies they are similar.
To find the scale factor by which Triangle 1 was reduced to form Triangle 2, we have to divide the given length of Triangle 2 by that of Triangle 1.
That is:
\(\begin{gathered} \text{Scale Factor = }\frac{7.5}{10} \\ \text{Scale Factor = 0.75} \end{gathered}\)That is the factor.
Jack borrows $2,700 at a rate of 8.2% per year. How much total will he pay if it takes 3 months to repay the loan?
well, a year has a total of 12 months, so 3 months is really 3/12 of a year.
\(~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$2700\\ r=rate\to 8.2\%\to \frac{8.2}{100}\dotfill &0.082\\ t=years\to \frac{3}{12}\dotfill &\frac{1}{4} \end{cases} \\\\\\ A=2700[1+(0.082)(\frac{1}{4})] \implies A = 2700(1.0205)\implies A=2755.35\)
A new movie theater opens at the local mall. During the first month, the owner collected information
on how many customers they had throughout each day. The owner concluded that the number of
customers the theater has at any given moment can be represented by C(x) = -x2 + 11x where x
represents the number of hours that the movie theater has been open on a given day. The theater
opens at 12:00 PM.
At what time does the theater have no customers?
a.
11:00 PM
b. 5:30 PM
c. 2:00 PM
d. 8:30 PM
The time at which the theatre does not have any customers is; Choice A: 11:00 PM
Functions and variableFrom the task content;
The function which represents the number of customers the theater has at each point in time is;C(x) = -x² + 11xHence, when C(x) = 0, the theater has no customers.
0 = -x² +11xDivide through by x;
0 = -x +11x = 11.
Read more on functions and variables;
https://brainly.com/question/24253401
a straight line passes through points A(-2,6) and B(4,2). M is the midpoint of line AB.Find the coordinates of M
Answer:
(1,4)
Step-by-step explanation:
Solve the following quadratic inequality x^2+x-6>0
Answer:
x < -3 or x > 2
Step-by-step explanation:
x² + x - 6 > 0
Convert the inequality to an equation.
x² + x - 6 = 0
Factor using the AC method and get:
(x - 2) (x + 3) = 0
If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.
x - 2 = 0
x = 2
x + 3 = 0
x = -3
So, the solution is x < -3 or x > 2