The rate of change in the volume of water will be -6 L/min in the fish tank. which is the correct answer would be an option (A).
The given graph shows the linear relationship between the volume of water in the fish tank in liters and the time in minutes the tank has been draining.
To determine the rate of change in the volume of water in the fish tank
The rate of change in the volume of water is equal to the slope of the given linear function.
As per the given graph, we take two points (0, 60) and (10,0)
The slope of the linear function = (0 - 60) / (10 - 0)
The slope of the linear function = -60/10
The slope of the linear function = -6
Therefore, the rate of change in the volume of water will be -6 L/min in the fish tank.
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The question seems to be incomplete the correct question has been attached below.
write the following term as a cube 27z^3
Answer:
(3z)^3
Step-by-step explanation:
27 = 3 * 3 * 3 = 3^3
3^3 z^3 = (3z)^3
Round to the nearest hundredth.
If there is more than one answer, separate them with commas.
According to the graph of the function the real zeros of the functions are (-0.33, 0)
Real zeros of the function
Based on the graph methods, the real zero of a function is where the graph of the function crosses the x‐axis; that is, the real zero of a function is the x‐intercept(s) of the graph of the function.
Given,
Here we have the function f(x) = -9x² - 6x - 1
Now, we have to plot the graph for the function by using the graphing calculator and then we have to find the real zeros of the function.
Here we have to take the expression and input it in the graphing calculator.
Then we get the graph like the following.
Now, we have to identify the real zeros of the function through this plotted graph.
The real zeros of the function means the x intercept points of the graph.
Here we have the x intercepts is (-0.33,0)
Therefore, the real zeros on the function are (-0.33 , 0)
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2. Sam is paid $14 per hour plus 6% of sales. If he worked 37.5 hours in one
week, what would his sales need to be for him to make $733.50 per week
before taxes?
The sales Sam need to make $733.50 per week before taxes is $3475.
Given, Sam is paid $14 per hour plus 6% of sales.
If he worked 37.5 hours in one week, what would his sales need to make
$733.50 per week before taxes = ?
Let the sales be represented by x
Amount made from no of hours worked :
= $14 × 37.5 hours
=$525
Sales made = 6% of x
=0.06x
Total = 0.06x+$525
=$733.50
0.06x=733.50-$525
=$208.5
x=$3,475
Hence we get the required answer.
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I am a multiple of 2 , 5 and 7. The sum of my three digits is 10 . I am not 280.
The multiple of 2, 5, and 7, such that the sum of the 3 digits is 10 is:
630
How to find the number?We want to find a number that is a multiple of 2, 5 and 7, such that the sum of the 3 digits is 10. (such that the number is not 280)
So our number N is of the form:
N = a*(2*5*7)
Where a is an integer.
N = a*70
Here we just need to find the value of a such that the sum of the 3 digits of the outcome is equal to 10.
For example, if a = 2 then:
N = 2*70 = 140
The sum gives 1 + 4 + 0 = 5
Now we jut need to keep trying values of a.
Eventually, we will get to:
if a = 9 then:
N = 9*70 = 630
The sum gives: 6 + 3 + 0 = 10
So this is our number.
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Write an expression for the conversion. How many square miles are in 32 square kilometers?
There are 12.3553 square miles are in 32 square kilometers.
What is square miles and square kilometers?
A square mile is equivalent to 2.59 square kilometres. A square mile must be multiplied by a factor of 2.59 in order to be converted to a square kilometre. For instance, 3 square miles are equivalent to 7.77 square kilometers when multiplied by 2.59, or square meters.
We have to find how many square miles are in 32 square kilometers.
Since, 1 square mile = 2.59 square kilometer
Suppose x square miles = 32 square kilometer
Consider, the ratio
[tex]\frac{1}{x} = \frac{2.59}{32} \\x = \frac{32}{2.59}\\ x=12.3553[/tex]
Therefore, 12.3553 square miles are in 32 square kilometer.
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any help would be really appreciated :)
Answer:
D = 30/7; R =32/7
Step-by-step explanation:
First, we need to find the scale of the number line. We can see that there are 7 ticks between 4 and 5. Thus, we can use (5-4)/7 to find the scale which is 1/7.
Since D is two ticks away from 4, we can use the equation:
[tex]4+2(\frac{1}{7})=D\\ 4+\frac{2}{7}=D\\ 4\frac{2}{7}=D\\ 4*7=28+2=\frac{30}{7}=D[/tex]
Since R is two ticks away from D or 30/7, we can use a similar equation:
[tex]\frac{30}{7}+2(\frac{1}{7})=R\\ \frac{30}{7}+\frac{2}{7}=R\\ \frac{32}{7}=R\\ 4\frac{4}{7}=R[/tex]
Your problem doesn't tell us whether we need to we use improper or mixed fractions, but I've included both for you.
please help me! (20pts)
Answer:
gpaph C.
Step-by-step explanation:
graph 'C' represents the provided function. Its equation is
[tex]y=-\frac{5}{2}x +4.[/tex]
An electrician charges $80 for a service call, and then $100/hr for labor. Find the linear equation that models the cost based on the number of labor hours. How much will it cost for 3 ½ hours of the electrician’s time?
which graph represents the solutions of p+1 <-1 or p- 5 > 7?
A graph which represents the solutions of p + 1 < -1 or p - 5 > 7 is shown in the image attached below.
What is an interval notation?In Mathematics, an interval notation simply refers to a set of real numbers which consist of all the real numbers that represents a continuous function and lies between two set of numbers.
This ultimately implies that, an interval notation should be used for writing all of the subsets of a real number line (graph) as shown below:
For the first interval, we have:
p + 1 < -1
p < -1 - 1
p < -2
Therefore, in interval notation, we have:
p = {∞, -2}
For the second interval, we have:
p - 5 > 7
p < 7 + 5
p < 12
Therefore, in interval notation, we have:
p = {12, ∞}
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Jan needs 1000 signatures on a petition. If 230 people sign the petition each day, how many days will it take 1000 people to sign the petition
The number of days which it would take 1000 people to sign the petition as required in the task content is; 4.35 days.
What is the number of days required for 1000 people to sign the petition?It follows from the task content that the number of days which it would take Jan to get 1000 signatures on the petition be determined.
Since it is given in the task content that 230 people sign the petition each day.
It therefore follows from proportion that the number of days needed for 1000 people to sign the petition is;
= 1000/230
= 4.3478 days.
Hence, the number of days which it would take 1000 people to sign the petition is approximately; 4.35 days.
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round 345.867234 to the nearest ten thousandths.
Answer:
I believe this should be it,
Step-by-step explanation:
344.8572
On a coordinate plane, a line goes through (negative 6, 8) and (2, 6). A point is at (negative 2, negative 4). What is the slope of the line that is parallel to the given line and passes through the given point? 1/4 What is the equation, in point-slope form, of the line that is parallel to the given line and passes through the given point? What is the y-intercept of the line that is parallel to the given line and passes through the given point?
Answer of the following questions:
Slope of the line which is parallel to the given line passes through the given point is -1/4.Equation of the line in point-slope form as per given condition is given by y = (-x/4) -(9/2).y-intercept of the line which is parallel to the given line and passes through the point (-2, -4) is -9/2.As given in the question,
For a coordinate plane,
Line passes through the points (-6, 8) and (2,6).
Slope of the line = ( y₂ - y₁)/ (x₂ - x₁)
= ( 6 - 8) / (2- (-6))
= -2 /8
= -1/4
Slopes of the parallel line are always equal.
Equation of the line parallel to the given line and passes through (-2, -4)
is given by:
y -(-4) = (-1/4)(x -(-2))
⇒y + 4 = -x/4-1/2
⇒ y = -x/4 -9/2
y-intercept of the line which is parallel to the given line and passes through (-2, -4) is given by:
x = 0
y = -9/2 is the y-intercept.
Therefore, answer of the questions for the given condition :
Slope of the line which is parallel to the given line passes through the given point is -1/4.Equation of the line in point-slope form as per given condition is given by y = (-x/4) -(9/2).y-intercept of the line which is parallel to the given line and passes through the point (-2, -4) is -9/2.Learn more about slope here
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-5x² + 6x -1 =7-7x²
it’s the zero product rule
Simplifying
-7x2 + 5x + -18 = 0
Reorder the terms:
-18 + 5x + -7x2 = 0
Solving
-18 + 5x + -7x2 = 0
Solving for variable 'x'.
Begin completing the square. Divide all terms by
-7 the coefficient of the squared term:
Divide each side by '-7'.
2.571428571 + -0.7142857143x + x2 = 0
Move the constant term to the right:
Add '-2.571428571' to each side of the equation.
2.571428571 + -0.7142857143x + -2.571428571 + x2 = 0 + -2.571428571
Reorder the terms:
2.571428571 + -2.571428571 + -0.7142857143x + x2 = 0 + -2.571428571
Combine like terms: 2.571428571 + -2.571428571 = 0.000000000
0.000000000 + -0.7142857143x + x2 = 0 + -2.571428571
-0.7142857143x + x2 = 0 + -2.571428571
Combine like terms: 0 + -2.571428571 = -2.571428571
-0.7142857143x + x2 = -2.571428571
The x term is -0.7142857143x. Take half its coefficient (-0.3571428572).
Square it (0.1275510204) and add it to both sides.
Add '0.1275510204' to each side of the equation.
-0.7142857143x + 0.1275510204 + x2 = -2.571428571 + 0.1275510204
Reorder the terms:
0.1275510204 + -0.7142857143x + x2 = -2.571428571 + 0.1275510204
Combine like terms: -2.571428571 + 0.1275510204 = -2.4438775506
0.1275510204 + -0.7142857143x + x2 = -2.4438775506
Factor a perfect square on the left side:
(x + -0.3571428572)(x + -0.3571428572) = -2.4438775506
Identity 74.1 and 74.2
Answer:
A decimal or consecutive tenths decimals. Also 0.1 away from each other.
Step-by-step explanation:
They have decimal endings: .1 and .2
And are 0.1 away.
Minutes : 0 3 6 9 12
Words typed: 0 120 ? 360 480
Kenny is practicing for a typing test to obtain a job as paralegal. The number of words he can type is proportional to the number of minutes he types. If the test is 18 mins long how many word will Kenny be able to type
2.what is the missing number in the table above
As per the proportionally concept, the missing value in the table is 240
and in 18 minute Kenny type 720 words.
Proportionality:
If two objects are proportional to each other, then it means that as one object increases the other will also increase and the ratio of the quantities is the same for all values.
Given,
Kenny is practicing for a typing test to obtain a job as paralegal. The number of words he can type is proportional to the number of minutes he types.
Here we need to find if the test is 18 mins long how many word will Kenny be able to type and the missing value in the table.
Here we have assume that if number of words typed is proportional to number of minutes
So, it can be written as Word typed α number of minutes
As in the equation form of the relation is,
Word typed = k * number of minutes
where k refers constant of proportionality
So, first we have to find the value of k, in order to solve this,
For, that we have to take the following,
=> 120 = k * 3
=> k = 120/3
Therefore, k = 40
So, if test is 18 minutes long, then the number of words is calculated as,
=> Word typed = k * 18
=> Word typed = 40 * 18
=> Word typed = 720
And the missing value of the table is,
=> words = 40 * 6
=> words = 240
Therefore, the number of words in 6 minutes is 240.
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Solve the compound inequality y−1<2 and y+2≥1. Write the solution in set-builder notation.
The solution in set builder notation is given by = {y:3>y≥-1}
Given the inequalities are,
y-1<2 ............(i)
y+2 ≥ 1 ..............(ii)
Solving the first inequality we get,
y-1 < 2
y-1+1 < 2+1, adding 1 to both sides
y < 3
Solving second inequality we get,
y+2 ≥ 1
y+2-2 ≥ 1-2
y ≥ -1
So the range is 3>y≥-1
So the solution in set builder notation is = {y:3>y≥-1}
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Answer the attached questions
Answer:
Step-by-step explanation:
89,83,91,92,93,x
n=6
average=91
total=91*6=546
89+83+91+92+93+x=546
448+x=546
x=546-448=98
Answer:
Step-by-step explanation:
1)
Let Andre's grade needs to be a x on his next test
Hence,
[tex]\displaystyle\\\frac{89+83+91+92+93+x}{6} =91\\\\\frac{448+x}{6} =91[/tex]
Multiply both parts of the equation by 6:
[tex]448+x=91(6)\\\\448+x=546\\\\448+x-448=546-448\\\\x=98[/tex]
2)
[tex]\displaystyle\\\frac{1000+1181+1191+1200+1268+1328+2584+x}{8} =1344\\\\\frac{9752+x}{8}=1344[/tex]
Multiply both parts of the equation by 8:
9752+x=1344(8)
9752+x=10752
9752+x-9752=10752-9752
x=$1000
3)
302, 293, 218, 330, 199, 253, 288
Arrange this series:
199, 218, 253, 288, 293, 302, 330
[tex]\displaystyle\\a)\ the \ median = \$288\\\\b) \ the\ mean =\frac{199+218+253+288+293+302+330}{7} \\\\=\frac{1883}{7} \\\\=\$269\\c)\\\\\frac{1883+x}{8} =269+5\\\\\frac{1883+x}{8} =274[/tex]
Multiply both parts of the equation by 8:
1883+x=274(8)
1883+x=2192
1883+x-1883=2192-1883
x=$309
[tex]2\sqrt{4} * \sqrt{9}[/tex]
According to the given square root value, the resulting value of the expression 2√4 × √9 is 12
Square root:
Square root refers any number that is equal to a number, which when squared gives the original number.
Given,
Here we have the expression 2√4 × √9.
Now, we have to find the value of the expression.
While we looking the given expression we have identified that the value of the square roots are
√4 = √(2 x 2) = 2
Similarly, the value of
√9 = √(3 x 3) = 3
So, now we have to replace the root with these values, then we get,
=> (2 x 2) x 3
=> 4 x 3
=> 12
Therefore, the resulting value is 12.
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Which equation represents the transformation formed by horizontally stretching the graph of f(x)=x√ by a factor of 4 and then vertically shifting the graph 2 units down?
Responses
g(x)=4x√−2
g left parenthesis x right parenthesis equals 4 square root of x minus 2
g(x)=4x−2−−−−−√
g left parenthesis x right parenthesis equals square root of 4 x minus 2 end root
g(x)=14x−−−√−2
g left parenthesis x right parenthesis equals square root of 1 fourth x end root minus 2
g(x)=4x−−√−2
The equation, [tex]g(x) = \sqrt{\frac{1}{4}x }-2[/tex], represents the transformation formed by horizontally stretching the graph of [tex]f(x) = \sqrt{x}[/tex] by a factor of 4 and then vertically shifting the graph 2 units down.
What is transformation of graph?
The process of algorithmically producing a new graph from an original graph is known as graph transformation, sometimes known as graph rewriting. It has several uses, including software engineering, layout algorithms, and image.
Consider, the given function [tex]f(x) = \sqrt{x}[/tex].
If horizontally stretching the graph by 4 units then, the graph becomes,
[tex]f(x) = \sqrt{\frac{x}{4} }[/tex].
If vertically shifting the graph 2 units, then the graph becomes,
[tex]h(x) = \sqrt{\frac{x}{4} } - 2[/tex].
Hence, the transformed form of the graph is, [tex]h(x) = \sqrt{\frac{x}{4} } - 2[/tex].
So, the third option is correct.
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Changing each of the values in a data set in a different way is called transforming the data.
A. True
B. False
Answer:
The answer is B false
Step-by-step explanation:
Many doctors rely on the use of intravenous medication administration in order to achieve an immediate response of a particular drug's effects. The concentration, C, in mg/L, of a particular medication after being injected into a patient can be given by the function C(t) = −2t2 + 8t, where the time, t, is hours after injection.
Part A: What are the domain and range of the function C(t) based on the context of the problem? Show all necessary calculations. (5 points)
Part B: Graph the function to determine the greatest concentration of the medication that a patient will have in their body. (5 points)
The domain of the given function is the hours or time taken whereas the range will be the concentration and greatest concentration of the medication that a patient will have in their body is 8 mg/L.
What is Domain of a function?
Inputs are assigned outputs by functions. The collection of all potential inputs for a function is its domain. For instance, the domain of f(x)=x2 and g(x)=1/x are all real integers with the exception of x=0.
Therefore, The domain of the given function is the hours or time taken.
What is range of a function?
The collection of potential output values for a function is known as its range.
Therefore, the range of the function is concentration.
B) Graph of the function is attached and we can see from the graph that greatest concentration of the medication that a patient will have in their body is 8 mg/L.
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f(x) = 5x - 6 , g(x) = x - 2
(fog)(x)
Answer:
(f∘g)(x) = 5x -16
Step-by-step explanation:
You want the simplified form of the composition (f∘g)(x) when f(x)=5x-6 and g(x)=x-2.
CompositionThe notation (f∘g)(x) is a shorthand way to write f(g(x)). The composition operator (ring operator) works right to left, meaning that g(x) is evaluated first, then the result is used as an argument to the function f.
EvaluationFunctions are evaluated in the usual way.
f(g(x)) = f(x-2) = 5(x-2) -6 = 5x -10 -6 = 5x -16
(f∘g)(x) = 5x -16
"A farmer with 350 meters of fencing wants to enclose a rectangular plot that borders on a river. If the farmer does not fence the side along the river, what is the largest area that can be enclosed? What are the dimensions of the enclosed area?
The width, labeled x in the figure, is
(Type an integer or decimal rounded to the nearest tenth as needed.)
The length, labeled 350-2x in the figure, is
(Type an integer or decimal rounded to the nearest tenth as needed.)
The largest area that can be enclosed is"
The dimensions of the shape will be 175 meters and 87.5 meters
The largest area that can be enclosed is 15312.5m².
How to calculate the area?Based on the information given, the equation to illustrate this will be:
2x + y = 350
y = 350 - 2x
Note that area = length × width
= x × y
We'll substitute the value into the equation. This will be:
A = x × (350 - 2x)
A(x) = 350x - 2x²
Differentiating the area, x will be 87.5
Width = 87.5m
Since y = 350 - 2x
= 350 - 2(87.5)
= 350 - 175
= 175
Length = 175m
Area = Length * Width
= 175 × 87.5
= 15312.5m²
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Select the correct answer.
What is √-9 + √121 written as a complex number in the form a + bi?
3 - 11i
11 + 3i
3 + 1li
11 - 31
{Question 17} Please help! Need this by tonight! Thanks so much :)
The slope is, 1/4.
And the y - intercept is (0, -1).
What is slope and y-intercept?
A number that describes a line's direction and steepness is known as the slope or gradient of a line in mathematics.
A y-intercept, also known as a vertical intercept, is a point in analytical geometry where the graph of a function or relation meets the y-axis of the coordinate system, employing the convention that the horizontal axis represents a variable x and the vertical axis represents a variable y. Thus,
x = 0 is satisfied at these sites.
Let the x - intercept is 4.
The x - intercept is the point on x - axis, when y = 0.
So, the x - intercept is (4, 0).
The y - intercept is -1.
y-intercept is the point on the y - axis, when x is zero.
So, the y - intercept is (0, -1).
Here we have two points (4, 0) and (0, -1).
By using these points we can find the slope.
Slope = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]m = \frac{-1-0}{0-4}= \frac{-1}{-4} = \frac{1}{4}[/tex]
Hence, the slope is 1/4 and the y - intercept is (0, -1).
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Find the equation of the line given the graph
Answer:
y=-1/2x+4
y=2x+5
y=x+2
Step-by-step explanation:
1. The equation of the line is y = - 4 / 9 x + 25 / 9.
2. The equation of the line is y = 5 /3 x - 14 / 3
3. The equation of the line is y = x + 2
How to find the equation of a line?The equation of a line can be represented in slope intercept form as follows:
y = mx + b
where
m = slopeb = y-interceptTherefore, the equation of the line can be found as follows:
1.
(4, 1)(-5, 5)
m = 5 - 1 / -5 -4
m = 4 / -9
m = - 4 / 9
Let's find y-intercept
1 = - 4 / 9(4) + b
1 + 16 / 9 = b
b = 9 + 16 / 9
b = 25 / 9
Hence, thee equation of the line is y = - 4 / 9 x + 25 / 9
2.
(-2, -8)(4, 2)
m = 2 + 8 / 4 + 2
m = 10 / 6
m = 5 / 3
Let's find y-intercept
2 = 5 / 3 (4) + b
2 - 20 / 3 = b
b = 6 - 20/ 3
b = - 14 / 3
Therefore, the equation of the line is y = 5 /3 x - 14 / 3
3.
(0, 2)(-2, 0)
m = 0 - 2 / -2 -0
m = - 2 / -2
m = 1
Let's find y-intercept
2 = 1(0) + b
b = 2
Therefore, the equation of the line is y = x + 2
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The average annual salary of the employees of a company in the year 2005 was $80,000. It increased by the same factor each year, and in 2006 the average annual salary was $88,000. Let y represent the average annual salary, in thousand dollars, after x years since 2005. Which of the following best represents the relationship between x and y? (1 point) y = 88(0.88)x y = 88(1.1)x y = 80(0.88)x y = 80(1.1)x
Answer:
[tex]y=80(1.1)^x[/tex]
Step-by-step explanation:
Please, tell me if I did this wrong as I'm not really sure of this. Thx
A toy rocket is shot vertically into the air from a launching pad 7 feet above the ground with an initial velocity of 72 feet per second. The height h, in feet, of the rocket above the ground at t seconds after launch is given by the function h(t)=-16 t²+72 t+7. How long will it take the rocket to reach its maximum height? What is the maximum height?
The rocket reaches its maximum height at ______ second(s) after launch.
(Simplify your answer.)
The maximum height reached by the object is ______feet.
(Simplify your answer.)
The rocket reaches its maximum height at 2.25 second(s) after launch
The maximum height reached by the object is 88 feet.
Time to reach the maximum heightThe function is given as
h(t) = -16t² + 72t + 7
Differentiate the above function
So, we have the following representation
h'(t) = -32t + 72
Set to 0
-32t + 72 = 0
So, we have
32t = 72
Divide by 32
t = 2.25
Hence, the time is 2.25 seconds
The maximum heightIn (a), we have
t = 2.25
Substitute t = 2.25 in h(t) = -16t² + 72t + 7
h(2.25) = -16(2.25)² + 72(2.25) + 7
Evaluate
h(2.25) = 88
Hence, the maximum height is 88 feet
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In exercises 1 and 2, find m∠1 and m∠2
The measures of the angles formed by the common transversal to the parallel lines are;
1. Angle 1 = 87°
Angle 2 = 100°
2. Angle 1 = 78°
Angle 2 = 78°
What are parallel lines?Parallel lines are lines that have the same slope but pass throuh different points.
The diagram consists of parallel lines that have a common transversal, therefore;
The alternate interior angles are congruentThe same side interior angles are supplementaryThe alternate exterior angles are congruentThe corresponding angles are congruentVertical angles are congruent (vertical angle theorem)1. The 87° angle and the Angle 1 are alternate interior angles, therefore;
87° ≅ Angle 1
87° = Angle 1
The 87° angle and the Angle 2 are same side interior angles
Therefore;
87° + Angle 2 = 180°
Angle 2 = 180° - 80° = 100°
Angle 2 = 100°
2. The 78° angle and the Angle 1 are corresponding angles, therefore;
78° ≅ Angle 1
Angle 1 = 78° (by the definition of congruency)
Angle 1 and Angle 2 are vertical angles
Therefore, Angle 1 is congruent to Angle 2 by vertical angle theorem
Angle 1 = Angle 2 by definition of congruency
Angle 1 = 78° = Angle 2
Learn more about the angles formed by parallel lines that have a common transversal here:
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5. Evaluate the expressions.
(-3)⁰ = -(4/9)⁰ =
Answer:
1
Step-by-step explanation:
anything to the power of 0 is equal to 1
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