Length 1 = 9 feet
Length 2 = 18 feet
Length 3 = 60 feet
Explanations:The total length of the rope = 87 feet
Let the length of the first piece be a
Let the length of the second piece be b
Let the length of the third piece be c
The addition of the three pieces will be equal to the total length of the rope
a + b + c = 87....................................(1)
The second piece is two times the length of the first piece:
b = 2a...............................(2)
The third piece is 6 feet more than six times the length of the first piece
c = 6a + 6...................................(3)
Substitute equations (2) and (3) into equation (1)
a + 2a + (6a + 6) = 87
9a + 6 = 87
9a = 87 - 6
9a = 81
a = 81/9
a = 9
Substitute a = 9 into equation (2)
b = 2(9)
b = 18
Substitute a = 9 into equation (3)
c = 6(9) + 6
c = 60
Therefore:
Length 1 = 9 feet
Length 2 = 18 feet
Length 3 = 60 feet
A teacher gave a test with 50 questions, each worth the a a teacher gave a test with 50 questions, each the same number of points. Donovan got 38 out of 50
questions right. Marci's score was 80%.
How many more questions did Marci answer correctly?
Marci answered
more questions correctly.
Answer:
Marci answered 40 out of 50
Marci answered 2 more questions correctly.
Step-by-step explanation:
Donovan got 38 out of 50
Marci got 80% which means 40 out of 50
40-38 = 2
4) Range: 3, 3, 4, 5, 5, 8, 9,
5) Mode: 2, 3, 7, 7, 9,
6) Mode: 2, 6, 8, 8, 9,
7) Median: 2, 2, 3, 4, 8,
8) Median: 2, 4, 5, 5, 8, 8,
9) Range: 2, 5, 6, 7, 7, 8, 9,
10) Range: 2, 2, 3, 4, 7, 9, 9,
Range = 9-3 = 6
Mode = 7
Mode = 8
Median = 3
Median = (5+5)/2 = 5
Range = 9-2 = 7
Range = 9-2 = 7
write the inequality shown -4x+y=-3
The inequality corresponding to the equation -4x + y = -3 is either y > 4x - 3 or y < 4x - 3, depending on the relationship between 4x - 3 and 0.
To write the inequality represented by the equation -4x + y = -3, we first need to manipulate the equation to express y in terms of x.
Starting with -4x + y = -3, we isolate y by adding 4x to both sides:
y = 4x - 3
Now we have y expressed in terms of x. To form the inequality, we consider the relationship between x and y. The inequality depends on whether the expression 4x - 3 is greater than or less than 0.
If 4x - 3 is greater than 0, then y is greater than 0, and we can write the inequality as:
y > 4x - 3
If 4x - 3 is less than 0, then y is less than 0, and we can write the inequality as:
y < 4x - 3
The inequality represents a region in the coordinate plane where the y-values are either greater than or less than the expression 4x - 3, depending on the direction of the inequality sign.
For example, if we choose a point (x, y) in the region above the line y = 4x - 3, where y is greater than 4x - 3, the inequality y > 4x - 3 will hold true. On the other hand, if we choose a point below the line, where y is less than 4x - 3, the inequality y < 4x - 3 will be satisfied.
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Combine like terms:
4xy+8x-2xy-3+4x+10
Please help ASAP! please and thank you have a great and blessed day!
Answer:
c
Step-by-step explanation:
Answer:
a and c
Step-by-step explanation:
dont know how to explain so uhhhh.
The developers of a web site are tracking its number of adult users and teenage users. They found that the equation
56x + y = 737
models the number of teenage users over time, and the equation
121x − 2y = −238
models the number of adult users over time. In both equations, x is the number of years since 2000, and y is the number of users in thousands. During what year was the number of teenage users and adult users the same?
Answer:
x = 5.7 years after 2000
Step-by-step explanation:
So the year when both the amount of users were the same can be found by using the both equations to solve for x (since y is the same)
48x + y = 729
we will take the value of y from this equation and use it in the other equation
y = 729 - 48x
135x - 2y = -140
135x - 2(729 - 48x) = -140
135x -1458 + 98x = -140
231x = 1318
x = 1318/231
x = 5.7 years after 2000
HELP IF U GET IT RIGHT ILL GIVE U BRAINLY PLEASE ONLY DO IF YOU KNOW HOW TO DO IT !!!!
Answer:
-8 ≤ y ≤ 7
Step-by-step explanation:
Tami has two jobs and can work at most 20 hours each week. She works as a server and makes $6 per hour. She also tutors and makes $12 per hour. She needs to earn at least $150 a week. Choose the first inequality that represents this scenario
Answer:
B?
Step-by-step explanation:
Is 1.05 greater than or less than 1.3
The larger number is obtained as 1.3.
What is a Decimal number?A decimal number is the representation of a number in whole and a part. The whole is represented by an integer while the part is equivalent to a number divided by the order of 10.
The given decimal numbers are 1.05 and 1.3.
The decimal 1.3 can be written as 1.30.
Now, the two decimals can be compared as below,
1.05 and 1.30
Both the decimals have equal integer part.
Digit at tenths of 1.05 is 0 and for 1.30 is 3.
Since, 3 > 0.
⇒ 1.30 > 1.05
Hence, 1.3 is greater than 1.05.
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lee and maya are collecting leaves for an art project. lee collects 24-100 of the total leaves needed. maya collects 4-10 of the total leaves needed. What fraction of the total number leaves did they collect altogether
Answer:
16/25
Step-by-step explanation:
4/10=40/100
24/100=24/100
40+24=64
64/100
16/25
Answer:
16/25
Step-by-step explanation:
2x+7y=11 is (-5,3) on the graph
Step-by-step explanation:
The given equation is :
2x+7y=11
We need to tell the point (-5,3) lies on the graph of the above equation of not.
Put x = -5 and y = 3 in the LHS of the above equation.
LHS = 2x+7y
= 2(-5)+7(3)
= -10 +21
= 11
It means, when we put x = -5 and y = 3 in the above equation, we get 11. Hence, (-5,3) lies on the graph of the equation.
Tom, Lily, and Shelby, competed as a team in a scavenger hunt. They were given a list of items to find around their neighborhood. Together the three of them found every item on the list. Tom found 1/3 of the items, and Lily found 4/9 of the items. Which area model represents the fraction of the item on the list that Shelby found?
The f(x) represents the fraction of the items on the list that Shelby found if Tom found 1/3 of the items, and Lily found 4/9 of the items.
What is a fraction?A fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.
Let's suppose the Total items in the list is x and Shelby found f(x) item.
Tom found 1/3 of the items, and
Lily found 4/9 of the items.
Then,
\(\rm f(x) = x - (\dfrac{1}{3}+ \dfrac{4}{9})\\\\\rm f(x) = x - (\dfrac{3+4}{9})\\\\\rm f(x) = x - \dfrac{7}{9}\\\\\\\rm f(x) = \dfrac{9x-7}{9}\\\\\)
Thus, the f(x) represents the fraction of the items on the list that Shelby found if Tom found 1/3 of the items, and Lily found 4/9 of the items.
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Place the numbers in order from greatest to least.
-5/2 5.25 1 3/4 -8.345
From greatest to least5.25, 1, 3/4 (or 0.75), -5/2 (or -2.5), -8.345
How to place the numbersTo sort these numbers from largest to smallest, we must establish a consistent format for swift comparison.
Among the various numbers included are whole figures, fractions and decimals, causing us to mix them uniformly first so that they match— in decimals.
-5/2 = -2.5
5.25 = 5.25 (no alteration required)
1 = 1.0 (to simplify analysis, only adding decimal points)
3/4 = 0.75
-8.345 = -8.345 (essentially unchanged)
At this point, we can effortlessly contrast and compare the numbers.
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What is the sum of m and the number after it
The algebraic representation of the expression is (m + n)
AlgebraSum means addition (+)The number after m is nsum of m and the number after it
= m + n
Therefore, the algebraic representation of the expression is (m + n)
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A cylinder has a radius of 4 millimeters. Its volume is 200.96 cubic millimeters. What is the height of the cylinder?
Answer:
3.999 millimeters.
Step-by-step explanation:
To find the height of the cylinder, we can use the formula for the volume of a cylinder:
V = πr²h
Given that the radius (r) of the cylinder is 4 millimeters and the volume (V) is 200.96 cubic millimeters, we can substitute these values into the formula and solve for the height (h).
200.96 = π(4²)h
200.96 = 16πh
To solve for h, we can divide both sides of the equation by 16π:
200.96 / (16π) = h
Using a calculator, we can calculate the approximate value of h:
h ≈ 200.96 / (16 × 3.14159)
h ≈ 3.999
Therefore, the height of the cylinder is approximately 3.999 millimeters.
Start at 2 Create a pattern that adds 2 to each number and then multiply by three. Stop when you have a five numbers
Answer:
2,12,42,132,402
Step-by-step explanation:
Answer:
2,4,12,36,108
Step-by-step explanation:
Divide 36x5 − 44x4 − 28x3 by 4x2.
Answer:-
36*5= 180
44*4= 176
28*3= 84
4*2=8
180-176-84= (-80)
-80/8=(-10)
Step-by-step explanation: Hope this helps. Mark me brainliest :)))
Triangle SRTs angle R is 59° angle T is 79° what is the length of ST to the nearest 10th of a yard 
If Triangle SRTs angle R is 59° angle T is 79° the length of ST to the nearest 10th of a yard is 6.1
How do we find the length ST of a triangle?Since we have given that
ΔSRT is a triangle with measures :
SR = 7 yd
∠T = 79°
∠R = 59°
We need to find the side ST .
To find the length of ST, we can use the Law of Sines, which states:
sin(T) / SR = sin(R) / ST
sin(79°) / 7 = sin(59°) / ST
0.14 = sin(59°) / ST
ST = sin(59°)/0.14 ⇒ 0.8572 / 0.14 ≈ 6.1229
Therefore, the length of ST is approximately 6.1 yards to the nearest tenth of a yard
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Suppose the correlation between height and weight for adults is 0.80. What proportion (or percent) of the variability in weight can be explained by the relationship with height
Answer: 64% of the variability in weight can be explained by the relationship with height.
Step-by-step explanation:
In statistics, Correlation coefficient is denoted by 'r' is a measure of the strength of the relationship between two variables.Coefficient of determination, \(r^2\), is a measure of variability in one variable can be explained variation in the other.Here, r= 0.80
\(\Rightarrow\ r^2= (0.80)^2=0.64\)
That means 64% of the variability in weight can be explained by the relationship with height.
The variability in weight is 64 % , explained by the relationship with height.
Correlation coefficients are always values between -1 and 1, where -1 shows a perfect, linear negative correlation, and 1 shows a perfect, linear positive correlation.
The correlation coefficient is measure the strength of the linear relationship between two variables in a correlation analysis.
Correlation coefficient is represented by r.
Given that, the correlation between height and weight for adults is 0.80.
\(r=0.8\)
The variability in weight is, = \(r^{2}=(0.8)^{2} =0.64\)
Thus, the variability in weight is 64 % , explained by the relationship with height.
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what is the inverse of equation x^2+4x+1 applying to a domain of [-2, infinity)?
Let \(f(x) = x^2+4x+1\). If \(f^{-1}(x)\) is the inverse of \(f(x)\), then
\(f\left(f^{-1}(x)\right) = x\)
We're told that \(f(x)\) has a domain of x ≥ -2, so the above can only be valid for \(f^{-1}(x)\ge-2\).
Evaluate the left side in this equation and solve for the inverse :
\(f^{-1}(x)^2 + 4f^{-1}(x) + 1 = x \\\\ f^{-1}(x)^2 + 4f^{-1}(x) + 4 = x + 3 \\\\ \left(f^{-1}(x) + 2\right)^2 = x + 3 \\\\\sqrt{\left(f^{-1}(x)+2\right)^2} = \sqrt{x+3} \\\\ \left|f^{-1}(x) + 2\right| = \sqrt{x+3}\)
Since \(f^{-1}(x)\ge-2\), or \(f^{-1}(x)+2\ge0\), by definition of absolute value we have
\(\left|f^{-1}(x)+2\right| = f^{-1}(x)+2\)
Then it follows that
\(f^{-1}(x) + 2 = \sqrt{x+3} \implies \boxed{f^{-1}(x) = \sqrt{x+3}-2}\)
Who is life insurance best suited for?
A. College students
B. Children
C. People with debt
D. Doctors
SUBMIT
Answer:
People with dependents
Step-by-step explanation:
AP3X
100 points need now!!!!!!!!!! helps!!!!!!!!!! I will make your brainlist thing!!!!
A cell phone plan costs $26.70per month for 700 minutes of talk time. It costs an additional $0.05 per minute for each minute over 700 minutes. To get e-mail access, it costs 20% of the price for 700 minutes of talk time. Your bill, which includes e-mail, is the same each month for 9 months. The total cost for all 9 months is $321.66 . Write and solve an equation to find the number of minutes of talk time you use each month.
Answer:
Step-by-step explanation:
700mins = 26.70 x 5
=133.5
Email = 2.67 x 5 = 13.35
173 - 13.35
Amount spend for calls
= $159.65
use the formula v = u + t to find the velocity when the initial velocity is 3 m/s, the accelaration is 1.5 m/s and the time is 7 seconds. What is the formula for each one?
The final velocity of the parameters is 13.5m/s
How to determine the final velocity of the parameter?In this question, the given parameters are represented as
Formula: v = u + at
Initial velocity = 3m/s
Acceleration = 1.5m/s²
Time = 7 seconds
When these parameters are represented using their required notation, we have the following representations
u = 3m/s
a = 1.5m/s²
t = 7 s
Next, we substitute the above parameters in the above equation
So, we have the following representation
v = 3 + 1.5 * 7
Evaluate the products
This gives
v = 3 + 10.5
Evaluate the sum
So, we have the following representation
v = 13.5
The notation v represents the final velocity
Hence, the final velocity is 13.5m/s
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what is the area of a square with the side length of 3 1/3
Answer:
11 1/9 unit^2.
Step-by-step explanation:
3 1/3 * 3 1/3
= 10/3 * 10/3
= 100/9
= 11 1/9.
SOME ONE HELP MEEE ITS TIMED
This graph shows the life expectancies of people in three Central American countries.
Life Expectancies in Central America
Answer:
b
Step-by-step explanation:
The number of foxes in national Forest has grown by 770 in the past year if the number of foxes at the beginning of the year was 5500 by what percent did it increase
Answer:
14%
Step-by-step explanation:
Divide 770 by 5500.
You get 7/50 or 0.14.
When you convert that to a percentage, you get 14%
Based on the information given, the percentage increase will be 14%.
From the information given, it was stated that the number of foxes in national Forest has grown by 770 in the past year and that the number of foxes at the beginning of the year was 5500.
The percentage increase will be:
= 770/5500 × 100.
= 0.14 × 100
= 14%
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Simplify the expressions:
−8y³ x 5y8
Hi! Your answer is 11. When multiplying terms with exponents, the exponents add up.
Step-by-step explanation:
You want to multiply the terms with the exponents. You should get 3 and 8, add those up and you will get 11.
Hope this helps! Have a good day :)
work out the value of 10²-4³ give ypur answer as a power of 6
Answer: 36
Step-by-step explanation: 10^2 is 100 and 4^3 is 64, and 100-64=36
food concession owner in a mall sold 120 beef, vegetable and pork sliders in 7 days. 20% of the sliders sold were beef and 15% were vegetable. How many pork sliders were sold?
The number of pork sliders sold is given as follows:
24 pork sliders.
How to obtain the number of pork sliders sold?The number of pork sliders sold is obtained applying the proportions in the context of the problem.
The total number of pork sliders is given as follows:
120 pork sliders.
The percentage of pork sliders sold is given as follows:
20%. (proportion of 0.2).
Hence the amount sold is given as follows:
0.2 x 120 = 24 pork sliders.
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Isolate Y and change equation into slope intercept form 3x+y= -1
Answer:
the final equation in slope-intercept form is y = 3x + 1.
Step-by-step explanation:
To isolate y and change the equation 3x + y = -1 into slope-intercept form, we can use the following steps:
Subtract 3x from both sides of the equation to isolate y on the left side of the equation:
y = -3x - 1
Divide both sides of the equation by -1 to change the sign of y:
y = 3x + 1
This is the slope-intercept form of the equation, where 3x is the slope and 1 is the y-intercept. In slope-intercept form, the equation has the form y = mx + b, where m is the slope and b is the y-intercept.
Answer
3x-y=1
The slope-intercept form is y = m x + b , where m is the slope and b is the y-intercept. y = m x + b Rewrite in slope-intercept form.