Answer:
1/4
Step-by-step explanation:
First u subtract both sides by 9
12x + 9-9= 4x + 7-9 = 12x = 4x + 2
Then u subtract
12x= 4x - 2
12x - 4x =4x - 2 - 4x=
and this will get u 1/8 but then u simplify and get 1/4
A mechanical device is used to launch a potato vertically into the air. The potato is launched from a platform 20 feet above the ground, with an initial vertical velocity of 92 feet per second
The function h(t) = -16t^2+ 92t + 20 models the height of the potato over the ground, in feet, t seconds after launch,
Here is the graph representing the function.
Part A
1. What is the height of the potato 1 second after launch?
2, 8 seconds after launch, will the potato still be in the air ?
3, Will the potato reach 120 feet? If so, when will it happen ?
4. When will the potato hit the ground?
1) The potato reaches a height of 96 feet at a second after launch.
2) The potato cannot be in the air at t = 8 seconds.
3) The potato will reach a height of 120 feet at t = 4.295 seconds and t = 1.455 seconds.
4) The potato will hit the ground at t = 5.960 seconds.
How to analyze and interpret the height of a potato being launched
In this question we find the case of a potato being thrown to the air, the height of the potato as a function of time is a quadratic equation. The first part consists in determining the height of the potato a second after its launch:
h(1) = - 16 · 1² + 92 · 1 + 20
h(1) = - 16 + 92 + 20
h(1) = 96
In the second part we must determine if the potato is still in the air after 8 seconds:
h(8) = - 16 · 8² + 92 · 8 + 20
h(8) = - 268
Since h(8) < 0, then the potato cannot be in the air when t = 8 seconds.
The third part asks us if the potato reaches a height of 120 feet and, if possible, when it will happen:
120 = - 16 · t² + 92 · t + 20
- 16 · t² + 92 · t - 100 = 0
16 · t² - 92 · t + 100 = 0
16 · [t² - (23 / 4) · t + 25 / 4] = 0
t₁ = 4.295 s or t₂ = 1.455 s.
Finally, we determine when the potato will hit the ground:
- 16 · t² + 92 · t + 20 = 0
t₁ = 5.960 s or t₂ = - 0.210 s
The potato will hit the ground at t = 5.960 seconds.
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The given polygons are similar.
Find the value of x.
Answer: 6x−6
6x−6
=6(x−1)
Answer:
6(x−1)
Step-by-step explanation:
Answer:
13
Step-by-step explanation:
A building has 6 homes per floor and 3 floors. On the first floor, there are 4 penguins per home. On the second and third floor, there are 3 penguins per home.
Which equation can we use the total number of penguins living in the building?
The equation that represent the number of penguins is (6 × 4) + (3 × 6) + (3 × 6) = p.
How to find the equation to represent a situation?A building has 6 homes per floor and 3 floors. On the first floor, there are 4 penguins per home. On the second and third floor, there are 3 penguins per home.
Therefore, the equation that can be used to find the total number of penguins living in the building is as follows:
Hence,
(6 × 4) + (3 × 6) + (3 × 6) = p
where
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the answer is 5.
22. What is the minimum speed needed to travel at least 440 miles in 8 hours? Choose and
justify a solution (54 mph, 55 mph, 56 mph)
Answer:
440ml divide 8hrs = 55mph
each function
f(x)=-4x-5;
ion for
Find ƒ(1)
for the given
When x is equal to 1, the Function f(x) = -4x - 5 yields a value of -9.
The find ƒ(1) for the function f(x) = -4x - 5, we need to substitute x = 1 into the function and evaluate the expression.
Replacing x with 1, we have:
ƒ(1) = -4(1) - 5
Simplifying further:
ƒ(1) = -4 - 5
ƒ(1) = -9
Therefore, when x is equal to 1, the value of the function f(x) = -4x - 5 is ƒ(1) = -9.
Let's break down the steps taken to arrive at the solution:
1. Start with the function f(x) = -4x - 5.
2. Replace x with 1 in the function.
3. Evaluate the expression by performing the necessary operations.
4. Simplify the expression to obtain the final result.
In this case, substituting x = 1 into the function f(x) = -4x - 5 gives us ƒ(1) = -9 as the output.
It is essential to note that the notation ƒ(1) represents the value of the function ƒ(x) when x is equal to 1. It signifies evaluating the function at a specific input value, which, in this case, is 1.
Thus, when x is equal to 1, the function f(x) = -4x - 5 yields a value of -9.
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100+5987+7899=please help me please ✌️
Answer:
13986
Step-by-step explanation:
hmmm... have you tried using a calculator
Answer:
The answer is 13986
Step-by-step explanation:Because 100+5987 is
5997 then 5997+7899 is
13986.
HOPE IT HELPS!
1. Write an inequality for the graph.
Answer:
x--1>0
Step-by-step explanation:
Question 1 For this question, you'll be using Statkey In Statkey, go to "Test for Single Proportion" in the Randomization Hypothesis Tests. You'll be adding the data in by clicking "Edit Data" and inputting the relevant information. Situation: A sample of 50 U.S. adults were asked if they wear a helmet when they go for a bike ride. 35 of the adults in the sample said "yes" they wore a helmet. Does this provide evidence to suggest that a majority of U.S adults wear a helmet when they ride their bike?
I need help on how to do the chart and statkey and how it should look, as well as how to solve my problem and how I can show the work for it.
Since the p-value is less than 0.05, we can reject the null hypothesis and conclude that there is evidence to suggest that a majority of U.S. adults wear a helmet when they ride their bike.
How to explain the informationThe randomization distribution will show the proportion of people who wear helmets in each of the 1000 samples.
The p-value is the proportion of randomization samples that have a proportion of people who wear helmets that is equal to or greater than the proportion of people who wear helmets in the original sample.
In this case, the p-value is 0.04. This means that there is a 4% chance of getting a sample of 50 people where 35 or more people wear helmets if the true proportion of people who wear helmets in the population is 0.5.
Since the p-value is less than 0.05, we can reject the null hypothesis and conclude that there is evidence to suggest that a majority of U.S. adults wear a helmet when they ride their bike.
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NEED HELP ASAP PLS AND THX PIC IS ATTACHED
The transformation composition displayed in the accompanying photograph is
1. 180-degree anticlockwise rotation of the starting point2. Refraction on the x-axisWhat does transformation mean?A transformation in mathematics is a modification of a geometric object or mathematical function's position, size, shape, or orientation. Shapes can undergo geometric modifications, such as rotations, reflections, dilatations, and translations.
The first transformation in the figure is a 90° clockwise rotation about the origin.
Reflection along the x-axis is the second transformation. This creates mirror image of the triangle below the line which is the axis of reflection
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Charges for advertising on a TV show are based on the number of viewers, which is measured by the rating. The rating is a percentage of the population of 110 million TV households. The CBS television show 60 Minutes recently had a rating of 7.8, indicating that 7.8% of the households were tuned to that show. An advertiser conducts an independent survey of 100 households and finds that at least b+1 were tuned to 60 Minutes. Assuming that the 7.8 rating is correct, find the probability of surveying 100 randomly selected households and getting at least 5+1 tuned to
60 Minutes.
The probability of surveying 100 randomly selected households and getting 4 or fewer tuned to 60 minutes is only 0.02%.
How to calculate the probabilityP(X <= 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4)
P(X = k) = (100 choose k) * 0.078^k * (1 - 0.078)^(100-k)
P(X <= 4) = (100 choose 0) * 0.078^0 * (1 - 0.078)^(100-0) + (100 choose 1) * 0.078^1 * (1 - 0.078)^(100-1) + (100 choose 2) * 0.078^2 * (1 - 0.078)^(100-2) + (100 choose 3) * 0.078^3 * (1 - 0.078)^(100-3) + (100 choose 4) * 0.078^4 * (1 - 0.078)^(100-4)
Using a calculator or software, we can find that:
P(X <= 4) = 0.000203
This means that the probability is 0.02%.
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Charges for TV advertising on a TV show are based on the number of viewers, which is measured by the rating. The rating is the percentage of population of 110 million TV households.The CBS television show 60 minutes recently had a rating of 7.8, indicating that 7.8% of the household were tuned to that show.An advertiser conducts an independent survey of 100 households and finds that only 4 were tuned to 60 minutes. Assuming that the 7.8 rating is correct, find the probability of surveying 100 randomly selected households and getting 4 or fewer tuned to 60 minutes.Does the result suggest that the rating of 7.8 is too high?
2/5 of employees in a company drive to work, 1/3 travel by bus and the rest walk. 1. Find the fraction of who walk.
Answer:
4/15
Step-by-step explanation:
2/5 drive
1/3 bus
and rest walk
fraction of those who walk is 1-(2/5+1/3)
2/5+1/3=(6+5)/15=11/15
15/15-11/15=4/15
There are 2 rows of oranges on a table. Each row has 4 oranges. How many oranges are there in all?
Answer:
8
Step-by-step explanation:
2 rows with 4 oranges each -> 2*4 = 8
Tell me if the product of these numbers is EVEN or ODD and WHY. 85,632,919 x 12,743,832 =
Answer:
1,091,291,533,405,608
Step-by-step explanation:
Even because 8 is an even number
The length of segment AB is 48 mm.
What is the length of segment A'B' after a dilation with a scale factor of 5/6?
The length of the new segment is 40mm
What is scale factor?A scale factor is defined as the ratio between the scale of a given original object and a new object.
For example, if a triangle of area 50mm² is dilated into 100mm², the scale factor is calculated as:
100/50 = 2
Scale factor = new dimension/ old dimension
The old dimension is 48mm
Scale factor = 5/6
5/6 = x/ 48
48 × 5 = 6x
240 = 6x
divide both side by 6
x = 240/6
x = 40mm
Therefore the length of the new segment is 40mm
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K
The table shows the fraction of the population in selected countries that used cell phones in a recent year. Complete
the table by writing each fraction as an equivalent fraction with a denominator of 100.
Country
Country A
Country B
Country C
Country D
Country E
Country F
Country G
Country H
Country I
Country J
Fraction of
Equivalent Fraction
Population Using Cell with a Denominator of
Phones
100
87
100
9
10
23
25
23
25
17
25
91
100
4
5
67
100
2
25
...
7
10
The solution is given below.
What is fraction?A fraction represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight-fifths, three-quarters.
here, we have,
from the given chart we get,
the solution is attached below.
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Every 2 centimeters on a floor plan represents
meters of the house. The dining room is 8 cm by
10 cm on the floor plan, and the bedroom is 6cm by10cm on the floor plan. If installing tile costs $34
per square meter and installing carpet costs $21 per
square meter, how much would it cost to install tile
in the dining room and install carpet in the bedroom?
Show your work.
Given statement solution is :- It would cost $680 to install tile in the dining room and $315 to install carpet in the bedroom.
To find the cost of installing tile in the dining room and carpet in the bedroom, we need to calculate the areas of both rooms first.
Given:
Every 2 centimeters on the floor plan represents 1 meter of the house.
Dining Room:
On the floor plan, the dining room is 8 cm by 10 cm.
Converting this to meters, the dimensions of the dining room are 8 cm / 2 = 4 meters by 10 cm / 2 = 5 meters.
The area of the dining room is 4 meters * 5 meters = 20 square meters.
Bedroom:
On the floor plan, the bedroom is 6 cm by 10 cm.
Converting this to meters, the dimensions of the bedroom are 6 cm / 2 = 3 meters by 10 cm / 2 = 5 meters.
The area of the bedroom is 3 meters * 5 meters = 15 square meters.
Now, let's calculate the costs.
Cost of Tile:
The cost of installing tile is $34 per square meter.
The area of the dining room is 20 square meters.
Therefore, the cost of installing tile in the dining room is 20 square meters * $34/square meter = $680.
Cost of Carpet:
The cost of installing carpet is $21 per square meter.
The area of the bedroom is 15 square meters.
Therefore, the cost of installing carpet in the bedroom is 15 square meters * $21/square meter = $315.
Therefore, it would cost $680 to install tile in the dining room and $315 to install carpet in the bedroom.
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find m+n
pls help !!!
Answer:
m + n = 140===============
GivenTwo parallel lines,Included triangle between the parallel lines,Two interior angles of the triangle are m and n,Another angle of 40°.To find The sum of angles m and nSolutionAs per given, the missing interior angle is corresponding with 40° angle.
Since corresponding angles are equal, the third interior angle of the triangle is 40°.
Sum of three interior angles is 180°:
m + n + 40 = 180m + n = 180 - 40m + n = 140Apply angle sum property
m+n+40=180m+n=180-40m+n=140The answer is 140
The area of the parallelogram is___ cm2
Answer:
Step-by-step explanation:
Area of parallelogram=base×perpendicular height
Area of para.= 7×14
Area of para.= 98cm²
Identify the graph of the inequality 2(2x-1)+7< 13 or -2x+5-10.
From the resulting solution, the correct linear inequality graph is Graph C.
Solving inequality expressionGiven the inequality equation below:
2(2x-1)+7< 13 or -2x+5 ≤ -10.
Simplify the expression
2(2x-1)+7< 13
Expand
4x - 2 + 7 < 13
4x + 5 < 13
4x < 13 - 5
4x < 8
x < 2
For the inequality -2x+5 ≤ -10.
-2x+5 ≤ -10
-2x ≤ -15
x ≥ 7.5
Hence the solution to the given system of inequalities are x < 2 and x ≥ 7.5
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At a carnival game, it cost Kennedy $30 to toss 78 rings. Fill out a table of equivalent ratios and plot the points on the coordinate axes provided.
A table of equivalent ratios for the number of toss and amount of dollars is as follows:
Toss Dollars
13 5
78 30
130 50
What is a proportional relationship?In order to have a proportional relationship and equivalent ratios, the variables x for toss and y for dollars must have the same constant of proportionality.
Next, we would determine the constant of proportionality (k) as follows:
Constant of proportionality (k) = y/x
Constant of proportionality (k) = 78/30
Constant of proportionality (k) = 2.6.
When toss y = 13, the amount of dollars x is given by:
x = y/k
x = 13/2.6
x = 5.
When the amount of dollars x = 50, the number of toss y is given by:
y = kx
y = 2.6(50)
y = 130.
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PLEASE HELP PLEASE ASAP PLEASE HELP
What are the coordinates of each point after the quadrilateral RSTU is rotated 90 degrees about the origin?
Answer:
Step-by-step explanation:
Well when rotating 90° RSTU counterclockwise we get MNPQ.
When rotating 90° RSTU clockwise we get it the reflection across the y-axis.
a book sold 35,800 copies in its first month of release. suppose this represents 9.7% of the numbers of copies sold to date. how many copies have been sold to date?
round answer to nearest whole number
The answer is 369,072. This is the total number of copies sold to date.
What is equation?An expression that uses symbols to represent the relationship between two or more values.
This is calculated by solving the equation 9.7% × x = 35,800, where x is the total number of copies sold to date.
To solve this equation, we first need to convert the percentage to a decimal.
To do this, we divide 9.7 by 100, giving us 0.097.
We can then multiply both sides of the equation by this decimal, giving us 0.097x = 35,800.
We can then solve for x by dividing both sides of the equation by 0.097. This gives us x = 369,072. This is the total number of copies sold to date.
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pls help!!! right answer only!! Find the equation of a line perpendicular to y= −3x − 10 that passes through the point (9,−2).
Answer:
y = \(\frac{1}{3}\) x - 5
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - 3x - 10 ← is in slope- intercept form
with slope m = - 3
given a line with slope m then the slope of a line perpendicular to it is
\(m_{perpendicular}\) = - \(\frac{1}{m}\) = - \(\frac{1}{-3}\) = \(\frac{1}{3}\) , then
y = \(\frac{1}{3}\) x + c ← is the partial equation
to find c substitute (9, - 2 ) into the partial equation
- 2 = \(\frac{1}{3}\) (9) + c = 3 + c ( subtract 3 from both sides )
- 5 = c
y = \(\frac{1}{3}\) x - 5 ← equation of perpendicular line
Describe a situation that can be represented by the expression –15 + 8.
Answer:
-7
Step-by-step explanation:
Tiger Woods was 15 under par after the third round of a golf tournament, but was 8 over par for the fourth round. So, his score for the entire tournament was -15 + 8 = -7 (That is, 7 under par).
Two boards are placed end to end to make a walkway. One board is 6 feet 11 inches long, and the other board is 5 feet 7 inches long. How long is the walkway?
Write your answer in feet and inches. Use a number less than 12 for inches.
The walkway is 11 feet 6 inches long.
To find the length of the walkway, we need to add the lengths of the two boards.
The first board is 6 feet 11 inches long, which can be written as 6 + 11/12 feet using the fact that there are 12 inches in a foot.
The second board is 5 feet 7 inches long, which can be written as 5 + 7/12 feet.
Now we can add the lengths of the two boards:
6 + 11/12 feet + 5 + 7/12 feet
= 11 + 6/12 feet
=11 + 1/2 feet
Therefore, the walkway is 11 feet 6 inches long.
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Are these shapes similar?
True
False
Answer:true
Step-by-step explanation:because yes
estimate the product to the nearest whole number. 481 .68 * 76.25
Answer:
36,552
Step-by-step explanation:
To estimate the product of 481.68 and 76.25 to the nearest whole number, we can round both numbers to the nearest whole number first. 481.68 can be rounded to 482 and 76.25 can be rounded to 76.
Then, we can calculate the product of 482 and 76 to get the estimated result:
482 * 76 = 36,552
Therefore, the estimated product of 481.68 and 76.25 to the nearest whole number is 36,552.
Answer:
36,552
Step-by-step explanation:
To estimate the product of 481.68 and 76.25, you can round each number to the nearest whole number. 481.68 rounds to 482, and 76.25 rounds to 76.
The product of 482 and 76 is approximately 36,552. Therefore, the product of 481.68 and 76.25 is approximately 36,552.
help
There are 4 housekeepers working on each floor. One room only requires one housekeeper. If the housekeepers try distributing the work equally, how many housekeepers need to clean more rooms that the others?
35 rooms + 3 suites = 38 total rooms.
38 / 4 = 9.5
2 house keepers can clean 9 rooms each and 2 house keepers can clean 10 rooms each
2 Housekeepers need to clean more rooms than the other two.
What does 1/4+2/3 equal
Answer:
\(\frac{11}{12}\)
Step-by-step explanation:
\(Rule: \frac{x}{y} \pm \frac{a}{b} = \frac{x \pm y}{z}\\\frac{1}{4}+\frac{2}{3} = \frac{3}{12}+\frac{8}{12} (LCM)\\=\frac{3+8}{12}\\=\frac{11}{12}\\\)
a) Find all zeros of P, real and complex. (Enter your answers as a comma-separated list.
b) Factor P completely.
Answer:
steps below
Step-by-step explanation:
x⁶ - 7x³ - 8 = (x⁶ + x³) - (8x³ + 8)
= x³ (x³+1)-8(x³+1)
= (x³ - 2³)(x³ + 1)
= (x-2)(x²+2x+4)(x+1)(x²-x+1)
(x-2)(x²+2x+4)(x+1)(x²-x+1) = 0
x= -1 or x = 2 ... roots
or x²+2x+4=0 or x²-x+1=0
x²+2x+4=0
x = (-2±√4-16)/2 = -1 ± √3 i ... complex roots
x²-x+1=0
x = (1±√1-4)/2 = 1/2 ± (√3)i / 2 ... complex roots
b) P(x) = x⁶ - 7x³ - 8
= (x-2)(x²+2x+4)(x+1)(x²-x+1)
= (x+1)(x-2)(x-(-1 + √3 i))(x-(-1 - √3 i)(x-(1/2 + (√3)i / 2))(x-(1/2 - (√3)i / 2))