Answer:
8
Step-by-step explanation:
If you plug in the answers it will give you 9x6= 54 which is wrong and 9x7=63 and 9x9=81 but 9x8=72.
Answer:
C length = 8
Step-by-step explanation:
Area of Rectangle = lw
A = lw Substitute l = (2x + 4) ; w = 9
72 = (2x + 4)9
72 = 18x + 36
36 = -36
36 = 18x
36/18 = x
2 = x
Substitute into l = 2x + 4 ; l = 2(2) + 4; l = 4 + 4 ; l = 8
after fitting a linear regression model to a dataset, the model's slope and intercept are -3 and 0 respectively. now, if we change our independent variable by adding 4.5 units to x, what is the absolute value of the change in the predicted value of dependent variable y?
The absolute value of change in the predicted value of dependent variable Y is 18.
Any variable whose value is influenced by an independent variable is said to be dependent. The thing that is measured or assessed in an experiment or mathematical equation is the dependent variable. The phrase "the outcome variable" is another name for the dependent variable.
Slope = b = -4
Intercept = a = -2.8
So, the equation of the regression line is
y = a + bx
y = -2.8 - 4x ...Equation 1
Now suppose the value of x is changed by adding 4.5
i.e. put x = x + 4.5
So,
y = -2.8 - 4(x + 4.5)
y = -2.8 -4x - 18 ...Equation 2
Comparing 1 and 2 ,
We get the predicted value of dependent variable Y as 18
Therefore The absolute value of change in the predicted value of dependent variable Y is 18
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When fingerprinting a person who is missing fingers, what are the two notations you should use on the fingerprint card
Fingerprinting is a technique used by forensic experts and crime scene investigators to identify individuals based on their unique fingerprints. Fingerprints are unique to each individual and have distinct ridge patterns that are used to identify individuals.
It is an effective way of identifying people because fingerprints remain the same throughout a person's life, unlike other physical characteristics.
When fingerprinting a person who is missing fingers, two notations that should be used on the fingerprint card are "amputation" and "absent." The notations on the fingerprint card should indicate that the fingers are missing due to amputation or absence.
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When fingerprinting a person missing fingers, the two notations that should be used on the fingerprint card are tented arch for a missing middle finger and amputation notation for a completely missing finger.
Explanation:When fingerprinting a person who is missing fingers, two notations should be used on the fingerprint card:
Tented arch: If the person is missing the middle finger, the missing finger should be notated as a tented arch. This means that the ridges of the fingertip start on one side of the finger and end on the other, creating a tent-like shape.Amputation: If a person is missing a finger completely, the notation should indicate the specific finger that is missing and the level of the amputation, such as 'Amputation of left index finger at the proximal phalanx'.Learn more about Fingerprinting here:https://brainly.com/question/34652657
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4.5 Quadratic Application Word Problemsa1. Jason jumped off of a cliff into the ocean in Acapulco while vacationing with some friends. Hisheight as a function of time could be modeled by the function h(t)=-16t? +16t+480, where t isthe time in seconds and h is the height in feet.a. How long did it take for Jason to reach his maximum height?5 secondsb. What was the highest point that Jason reached?I484 feetc. What is Jason’s initial height?
SOLUTION:
Case: Quadratic Application Word Problem
Given:
\(h(t)=-16t^2+16t+480\)Required:
a. How long did it take for Jason to reach his maximum height?
b. What was the highest point that Jason reached?
c. What is Jason’s initial height?
Method:
Step 1: How long did it take for Jason to reach his maximum height?
To calculate this, we find the vertex
\(\begin{gathered} h(t)=-16(t^2-t-30) \\ h(t)=-16[(t^2-t+\frac{1}{4}-\frac{1}{4}-30) \\ h(t)=-16[(t-\frac{1}{2})^2-\frac{1}{4}-30) \\ h(t)=-16(t-\frac{1}{2})^2+4+480 \\ h(t)=-16(t-\frac{1}{2})^2+484 \end{gathered}\)From here, the vertex is at (1/2, 484).
Hence it takes 1/2 a second to reach the maximum height
Step 2: What was the highest point that Jason reached?
Also, from the vertex, we get the highest height reached
The maximum height reached was 484 feet
Step 3: What is Jason’s initial height?
The initial height is gotten at the start of the motion, i.e. h(0) = ?
\(\begin{gathered} h(t)=-16t^2+16t+480 \\ h(0)=480 \end{gathered}\)Hence the initial height was 480 feet
Final answer:
A) Time = 1/2 second
B) Maximum Height, H= 484 feet
C) Initial Height, H= 480 feet
Grade 7 students were surveyed to determine how many hours a day they spent on various activities. The results are represented in the circle graph below. About how much time altogether was spent on homework and eating?
Can Someone Help me please
Answer:
As no graph is provided you can only solve it.Steps provided below
Graph of 7students so there must be 7 partsMark the point on graph where home work and painting is mentioned.Add both the respective valuesYes you have done it
5. Jamal got a job working on an assembly line in a toy factory. On the 20th day of work, he
assembled 137 toys. He noticed that since he started, every day he assembled 3 more
toys than the day before. How many toys did Jamal assemble altogether during his first
20 days?
(Arithmetic sequence)——
2170 toys Jamal assemble altogether during his first 20 days.
What is the arithmetic sequence?
A series of numbers called an arithmetic progression or arithmetic sequence has a constant difference between the terms.
Here, we have
Given: Jamal got a job working on an assembly line in a toy factory. On the 20th day of work, he assembled 137 toys. He noticed that since he started, every day he assembled 3 more toys than the day before.
We have to find how many toys did Jamal assemble altogether during his first 20 days.
We apply the arithmetic sequence formula and we get
tₙ = t₁ + (n-1)d
137 = t₁ + (20-1)(3)
t₁ = 80
To calculate the total number of toys that Jamal assemble in his first 20 days,
S₂₀ = (20/2)(2×80 + (20-1)(3))
S₂₀ = 2170
Hence, 2170 toys Jamal assemble altogether during his first 20 days.
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It takes 5 minutes for your printer to print 40 papers
How long does it take for your printer to print 12 papers?
Answer:
1.5 minutes (or 1 minute and 30 seconds)
Step-by-step explanation:
5 : 40 = x : 12
x = (5 * 12)/40
x = 12/8
x = 1.5 minutes
Answer: 1 min and 50 seconds
Step-by-step explanation:
first, you have to find the unit rate of how many papers the printer can make in a min which is 40 divided by 5 which gets you a unit rate of 8 for every minute then you take your 12 paper and divide it by your unit rate of 8 per minute which gets you how long it would take to print 12 papers which equal 1.5
(15 points and brainliest) If x = 0 and y < 0, where is the point (x, y) located? A. on the x axis B. on the y axis
Answer:
On the y axis
Step-by-step explanation:
If x is zero, it automatically has to be on the y axis because x=0 is where the x and y axis intersect.
how much variance between two variables has been explained by a correlation of .9?
A correlation of .9 indicates that 81% of the variance between two variables has been explained.
Correlation measures the strength of the relationship between two variables. A perfect positive correlation is 1.0, indicating that the two variables move in the same direction together. A perfect negative correlation is -1.0, indicating that the two variables move in opposite directions. A correlation of 0 indicates no relationship between the two variables.
To determine the proportion of variance explained by a correlation, you need to square the correlation coefficient (in this case, 0.9). This is called the coefficient of determination (R^2). So, you calculate:
R^2 = (0.9)^2 = 0.81
Thus, a correlation of 0.9 explains 81% of the variance between the two variables.
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4. The initial number of bacteria cells in a culture is 1000, and this number increases by 6% every hour. Approximately how many bacteria would be in the culture after 4 hours?
1,240
1,124
1,263
1,191
Answer:
1263
Step-by-step explanation:
We need to use the formula for exponential growth:
P(t) = \(P_{o} (1+r)^{t}\)
Substituting 1000 in for \(P_{o}\), 0.06 in for r and 4 in for t, results in 1263 Bacteria.
3. 2(x − 3)
A) 2
B) −4
C) 2x − 6
D) 2x − 4 4)
Answer:
C
Step-by-step explanation:
multiply by 2 to be 2x-6
Answer:
x=8//
Step-by-step explanation:
2(x- 3)
or,2x-6
or,X=6+2
hence,X=8//
boris is on vacation at a tropical bay that has three islands. he rents a boat on island a and plans to navigate to island c, which is 13. miles away.
Boris should navigate 79.74° to go to Island C.
Given,
Boris is on vacation at a tropical bay that has three islands.
Distance between Island A and Island C = 13 miles
Distance between Island B and Island C = 14 miles
Distance between Island A and Island B = 8 miles
Boris rents a boat on Island A and plans to navigate to Island C.
We have to find that at what angle should she navigate to go to Island C
Here,
14² = 13² + 8² - (2 × 13 × 8) Cos A
Cos A = (13² + 8² - 14²) / (2 × 13 × 8)
Cos A = (169 + 64 - 196) / 208
Cos A = 37/208
A = arc Cos 0.178
A = 79.74°
Therefore,
Boris should navigate 79.74° to go to Island C.
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The given question is incomplete. Completed question is given below;
Boris is on vacation at a tropical bay that has three islands. He rents a boat on Island A and plans to navigate to Island C, which is 13 miles away. Based on the figure below, at what angle θ should he navigate to go to Island C? Carry your intermediate computations to at least four decimal places. Round your answer to the nearest tenth of a degree . × S
Image is attached;
Can someone help me with this
Answer:
y= 3x+ 1
Step-by-step explanation:
-3x + 2y =2
+3x +3x
---------------------
2y = 3x +2
----- --------
2 2
y = 3x + 1
1.{ (-7, 2), (3, 5), (8,4), (-6, 5), (-2, 3)}
Function?
Domain:
Range:
Answer:
Step-by-step explanation:
The relation will be a function as long as none of the x values are repeated or "used" more than once. Let's state the domain (the x values) to make this determination. Domain and range are both stated in order from least to greatest, no repeats allowed (so if there is one, we won't list it but will make note of it if the repeated value is an x value. The y values can repeat all they want!)
D = {-7, -6, -2, 3, 8} That's the domain and there were no repeats, so this IS a function.
R = {2, 3, 4, 5} Notice that 5 is a y value in 2 of the coordinates, but no repeats allowed so we only list it once.
Which shows the following expression after the negative exponents have been eliminated?
StartFraction m Superscript 7 Baseline n cubed Over m n Superscript negative 1 Baseline EndFraction, m not-equals 0, n not-equals 0
StartFraction m Superscript 7 Baseline n cubed n Over m EndFraction
m Superscript 7 Baseline n cubed m n
StartFraction m Superscript 7 Baseline n cubed Over m (negative n) EndFraction
StartFraction m n Over m Superscript 7 baseline n EndFraction
The following expression shows the main expression after the negative exponents have been eliminated: A. m⁷n³n/m.
What is an exponent?In Mathematics, an exponent can be defined as a mathematical operation that is used in conjunction with an algebraic expression to raise a quantity to the power of another and it is generally written as bⁿ.
By applying the property of exponents based on the law of indices for the division of powers, we have the following:
b⁻ⁿ = 1/bⁿ
In this context, the exponent n⁻¹ in the given algebraic expression would be rewritten based on the law of indices for the division of powers as follows;
n⁻¹ = 1/n
Substituting the given parameters into the given algebraic expression, we have the following;
(m⁷n³)/mn⁻¹ = (m⁷n³)/m × n
(m⁷n³)/m × n = (m⁷n³n)/m
(m⁷n³)/mn⁻¹ = m⁷n³n/m
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Answer:
Step-by-step explanation:
its A
use calculus to find the area a of the triangle with the given vertices. (0, 0), (6, 1), (3, 7)
The area of the triangle with the given vertices is 19.5 square units.
To find the area of a triangle with the given vertices, we can use the formula A = (1/2)abs[(x1y2 + x2y3 + x3y1) - (x2y1 + x3y2 + x1y3)], where (x1, y1), (x2, y2), and (x3, y3) are the coordinates of the vertices.
Plugging in the given coordinates, we have:
A = (1/2)abs[(0*1 + 6*7 + 3*0) - (6*0 + 3*1 + 0*7)]
A = (1/2)abs[(42) - (3)]
A = (1/2)abs[39]
A = (1/2)(39)
A = 19.5
Therefore, the area of the triangle with the given vertices is 19.5 square units.
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During 30 minute on the treadmil, la toya burned 20 calories per minute what is the function that represent this situation
Let c be the number of calories burned
and let t be the time taken to burn the calories.
At 1 minute, 20 calories are burned
Mathematically, we express that as;
\(\begin{gathered} c=\text{ k}\times t \\ \text{Where k is constant of proportionality;} \\ 20=k\times1 \\ k=20 \end{gathered}\)Thus, the function that represents the situation is;
\(\begin{gathered} \text{substitute the value of k in the equation above} \\ c=20t \end{gathered}\)ANSWER: The linear function that represents the situation is c=20t
the issubset() method can be used to determine whether set1 is a subset of set2. True or false?
True. The is subset() method is used to check if all elements of set1 are present in set2, which means set1 is a subset of set2 if the is subset() method returns true.
True. The "is subset()" method can be used to determine whether set1 is a subset of set2. If all elements of set 1 are present in set 2, then set 1 is considered a subset of set 2. The method returns `True` if set1 is a subset of set2 and `False` otherwise.
In mathematics, if all the elements of A are also elements of B, then the set A is one of the set B; then B is a superset of A. A and B may be equal; if they are not, A is a necessary condition of B. A relationship in which one group is one of the other is called existence (or sometimes existence). A is part of B, it can also indicate that B contains (or contains) A, or that A contains (or contains) B. A k-subset is a subset with k elements.
A linked subset defines the partial order of a set. In fact, intersection and union give intersection and intersection, with subsets of the given set being Boolean algebra in the relationship, and the link itself is a Boolean coverage relationship.
Example usage:
```python
set1 = {1, 2, 3}
set2 = {1, 2, 3, 4, 5}
result = set1.issubset(set2)
print(result) # Output: True
```
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the scatter plot shows hikers elevation above sea level during a hike from the base of the top of a mountain equation of a trend line for the hikers elevation is Y = 8.16 X + 695 where X represents the number of minutes and Y represents the hikers of elevation and feet use the equation of the trend line to estimate the hikers the elevation after 150 minutes
The equation of the trend line to estimate the hiker's elevation after 165 minutes is 2291.3 feet.
What is linear equation ?
Linear equation can be defined as equation in which highest degree is one.
Given that,
The equation of a trend line for the hiker's elevation is y = 9.82x + 671.
We have to determine,
The equation of the trend line to estimate the hiker's elevation after 165 minutes.
According to the question,
The equation of a trend line for the hiker's elevation is y = 9.82x + 671.
Where, x represents the number of minutes and y represents the hiker's elevation in feet.
To find the trend line to estimate the hiker's elevation after 165 minutes, substitute the value of x = 165 minute in the given equation.
Hence, The equation of the trend line to estimate the hiker's elevation after 165 minutes is 2291.3 feet.
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2. Write an equation with the given characteristics: a. Goes through: \( (2,13) \) and \( (2,-11) \)
An equation passing through the points (2, 13) and (2, -11) is x = 2.
The equation of a line can be written in the form of y = mx + b, where m is the slope and b is the y-intercept.
To find the equation of the line that goes through the given points, we first need to find the slope. The slope can be calculated using the formula:
\(\[m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}\]\)
Plugging in the given points, we get:
\(\[m = \frac{-11 - 13}{2 - 2} = \frac{-24}{0}\]\)
Since the denominator is 0, the slope is undefined. This means that the line is vertical. A vertical line has the equation x = a, where a is the x-coordinate of any point on the line. Since both of the given points have the same x-coordinate of 2, the equation of the line is x = 2.
Therefore, the equation with the given characteristics is x = 2.
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A rectangular prism is 12 feet by 10 ft by 3 ft. What is the volume of the prism?
A 186 ft
B 360 ft
C 372 ft2
D 720 ft
HELP PLS
At the grocery store last week, SuperSugarSweet candy bars were priced at 4 bars for 5$. This week, they are on sale at 5 bars for 4$. What is the percent change in the price per candy bar this week as compared to last week?
The percent change would be 36%
What is percent change?Percent increase and percent decrease are measures of percent change, which is the extent to which a variable gains or loses intensity, magnitude, extent, or value.
Given:
4 candy bars = 5$
1 candy bar = 5/4
1 candy bar = 1.25$
Now,
5 candy bars = 4$
1 candy bar =4/5
1 candy bar = 0.8$
% change = (0.8-1.25) / 1.25 *100
= 36%
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ramiro has filled 1/3 or 50 gallons of his fish tank. find the total capacity of the fish tank
Answer:
150
Step-by-step explanation:
because full capacity is 3/3, therefore you time 50 by 3, which will be 150 gallons
Gordon, Henry and Sarah share £48 in a ratio 2:3:1. How much money does each person get?
Answer:
Gordon: 16 pounds
Henry: 24 pounds
Sarah: 8 pounds
Step-by-step explanation:
Number of parts: 3+2+1 = 6
Amount per part: 48/6 = 8
Now Each person gets:
Gordon: 8 x 2 = 16 pounds
Henry: 8 x 3 = 24 pounds
Sarah:8 x 1= 8 pounds
Hope this helps.
Good Luck
Answer:
Gordon $16
Henry$24
Sarah$8
Step-by-step explanation:
You add the ratio 2+3+1= 6
Then you take everyone ratio according to how their names are arranged over 6 then you get the answer
Gordon2/6×48= 16
Henry3/6×48= 24
Sarah1/6×48= 8
Put it in vertex form by completing the square
Answer: -∞<x<∞
Explanation: The function has no undefined points or domain constraints.
For what value of h is y in the plane spanned by v1 and v2?
Let v1= [1,2,-1], v2=[-2,-1,1], and y=[4,-1,h]. For what value of h is y in the plane spanned by v1 and v2?
For the value h = -1, the vector y = [4,-1,-1] is in the plane spanned by v1 and v2.
To determine whether y is in the plane spanned by v1 and v2, we need to check if y can be expressed as a linear combination of v1 and v2.
Let's set up an equation using the vectors v1, v2, and y:
y = av1 + bv2,
where a and b are scalar coefficients to be determined.
Substituting the given values of v1, v2, and y, we have:
[4,-1,h] = a[1,2,-1] + b[-2,-1,1].
Expanding the right side of the equation, we get:
[4,-1,h] = [a,2a,-a] + [-2b,-b,b].
Combining like terms, we obtain:
[4,-1,h] = [a-2b,2a-b,-a+b].
Now, we can set up a system of equations by comparing the corresponding components:
a - 2b = 4, (1)
2a - b = -1, (2)
-a + b = h. (3)
We can solve this system to find the values of a, b, and h.
From equation (2), we can solve for a in terms of b:
2a = b - 1,
a = (b - 1)/2.
Substituting this expression for a into equation (1), we have:
(b - 1)/2 - 2b = 4,
b - 1 - 4b = 8,
-3b = 9,
b = -3.
Substituting the value of b = -3 into equation (2), we find:
2a - (-3) = -1,
2a + 3 = -1,
2a = -4,
a = -2.
Finally, substituting the values of a = -2 and b = -3 into equation (3), we get:
-(-2) + (-3) = h,
2 - 3 = h,
h = -1.
Therefore, for h = -1, the vector y = [4,-1,-1] is in the plane spanned by v1 and v2.
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What this I’m trying to figure it out ASAP plz help
Answer:
i hink c or a
Step-by-step explanation:
Properties
A line segment is a connected, non-empty set.
If V is a topological vector space, then a closed line segment is a closed set in V. However, an open line segment is an...
More generally than above, the concept of a line segment can be defined in an ordered geometry.
A pair of line segments can be any one of the following: intersecting, parallel, skew, or none of...
whoever answers 1st (WITH A CORRECT ANSWER) will be marked brainliest.
Answer:
29/6
Step-by-step explanation:
1 + -2/3 - -m
1 -2/3 +m
1/3 +m
Let m = 9/2
1/3 + 9/2
Get a common denominator
1/3 *2/2 + 9/2*3/3
2/6 + 27/6
29/6
Answer:
29/6
Step-by-step explanation:
Find the midpoint of the line segment with the given endpoints
(4,-6), (9, 6)
Answer:
I think it's number 5 or (5,8)
Step-by-step explanation:
19. Find x:
€ (17x-7)*
G
19
HELP W ALL 3 !!
Answer:
24
(17x-7)
x = 7 + 17
x = 24
h
o
p
e
i
t
w
i
l
l
h
e
l
p
???
HELPOOOOOPPPPPPPPPPPPPOPPPPPPPP
Answer:
-13, -22, -31, -40
Step-by-step explanation:
substitute n for each term