According to the information, it can be inferred that the answer is No, because informing the students that there will be a $10 increase... (option B).
Why is this question invalid?This question is not valid because it specifies information that would surely change the answer of the respondent.
The information that the question reveals is that there is going to be a raise, this will cause a refusal in people to accept that raise just to see a live band.
According to the above, the question is invalid because it reveals information that will modify the answer of those who respond.
Note: This question is incomplete because the options are missing. Here are the options:
A. No, because questions about musical preferences are always invalid because you cannot measure people's opinions on subjective manners like music and other creative arts.
B. No, because informing the students that there will be a $10 increase in the cost of a prom ticket may make them more likely to say that they would not like a live band to perform.
C. No, because students should be given a sample of the band's music to allow them to offer a more informed opinion.
D. No, because a random sample of all seniors in the country should have been taken to determine if a live band should perform at this high school's senior prom.
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y=1x^(2)+10x+22 line of symmetry
Answer:
x = -5
Step-by-step explanation:
We can use the below formula to find the line of symmetry.
( x - a )² + b
Here,
line of symmetry = +a
Vertex = +b
And now let us take a look at the given equation.
y = x² + 10x + 22
To find the line of symmetry from the given equation we have to make the given equation as the given formula.
Let us use the completing square method for that.
y = x² + 10x + 22
Put zero instead of y.
x² + 10x + 22 = 0
x² + 10x = -22
x² + 10x + 25 = -22 + 25
( x + 5 )² = 3
( x + 5 )² -3 = 0
Therefore,
line of symmetry of the line is = -5
∴ x = -5
What does x³+y³+z³ equal
Answer:
there is no ans that is the ans
Answer:
x³ + y³ + z³ = [ (x +y +z)(x² + y² + z² -xy - yz - xz) ] + 3xyz
Step-by-step explanation:
x³ + y³ + z³ = [ (x +y +z)(x² + y² + z² -xy - yz - xz) ] + 3xyz
The curve through the ordered pairs (0, 10), (1, 5), and (2, 2.5) can be represented by the function f(x) = 10(0.5). What
is the multiplicative rate of change of the function?
The multiplicative rate of change of the exponential function is 0.5.
How to analyze an exponential function
In this problem we have three that are part of a exponential function, whose form is shown below:
[tex]y = a\cdot r^{x}[/tex] (1)
Where:
a - Initial valuer - Rate of changeWe notice that for Δx = 1, the value of y is halved. Hence, the multiplicative rate of change of the exponential function is 0.5.
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Using f(x) = -5x + 12, evaluate f (-2)
Answer:
22Step-by-step explanation:
f(-2) means that the "x" variable in the equation can be substituted for -2
So, we have
-5(-2) + 12
This equals 10 + 12 = 22
So, the answer is 22
Which of the following expressions are equivalent to -9/6?
A. 9/-6
B. -9/-6
C. None of the above
The expression that is equivalent to -9/6 is = 9/-6. That is option A.
What is a fraction?Fraction is represented by a numerator and a denominator which can be either positive or negative.
From the fraction given, -9/6. The numerator is 9 while the denominator is 6.
The expression that is equivalent to -9/6 is = 9/-6 and not -9/-6 because the negatives are cancelled out.
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Find the value of:
(3/4)²
a.9/16
b.6/8
c.6/4
d.9/4
Answer:
a
Step-by-step explanation:
(3/4) to the power of 2 means to multiply it by itself and so, 3/4 times itself is 9/16
Answer:
This is a - [tex]\dfrac{9}{16}[/tex]Step-by-step explanation:
Hello
[tex]\large\displaystyle\text{$\begin{gathered} \sf Apply \ the \ third \ exponent \ rule-: \bigg(\dfrac{x}{y}\bigg)^m=\dfrac{x^m}{y^m} \end{gathered}$}}[/tex]
Solve-:
[tex]\large\displaystyle\text{$\begin{gathered} \sf \bigg(\dfrac{x}{y}\bigg)^2= \dfrac{3^2} {4^2} =\boxed{\sf{\frac{9}{16}}} \end{gathered}$ }}[/tex]
[tex]\pmb{\tt{done \ !!}}[/tex]
[tex]\orange\hspace{300pt}\above2[/tex]
What is the coefficient of m3 in the expression 4m + 7 + 3m3?
4
7
3
3 m 3
Answer:
3 is the coefficient of m3
Tom works at an aquarium shop on Saturdays. One Saturday, when Tom gets to work, he is asked to clean a 180-gallon reef tank. His first job is to drain the tank. He puts a hose into the tank and starts a siphon. Tom wonders if the tank will finish draining before he leaves work. He charts the amount of water remaining in the tank over time as shown in the table below.
Please find the question attached below.
The equation that models the decrease in water (in gallons) of the fish tank over time (in hours) is y = - 20x + 180.
We know that a linear equation with one variable is one that contains just one variable.
Here we have to find the appropriate equation that models the given chart.
For option A. :
y = - 40x + 140
At x = 2, y = - 40*2 + 140 = - 80 + 140 = 60 =/ 140
So this option is incorrect.
For option B.:
y = - 40x + 180
At x = 2, y = - 40*2 + 180 = - 80 + 180 = 100 =/ 140
So this option is incorrect.
For option C.:
y = - 20x + 140
At x = 2, y = - 20*2 + 140 = - 40 + 140 = 100 =/ 140
So this option is incorrect.
For option D.:
y = - 20x + 180
At x = 2, y = - 20*2 + 180 = - 40 + 180 = 140
So this option is correct.
Therefore, the equation that models the decrease in water (in gallons) of the fish tank over time (in hours) is y = - 20x + 180. So, the last option is correct.
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Two altitudes of a triangle have lengths $12$ and $14$. What is the longest possible integer length of the third altitude
The longest possible altitude of the third altitude (if it is a positive integer) is 83.
According to statement
Let h is the length of third altitude
Let a, b, and c be the sides corresponding to the altitudes of length 12, 14, and h.
From Area of triangle
A = 1/2*B*H
Substitute the values in it
A = 1/2*a*12
a = 2A / 12 -(1)
Then
A = 1/2*b*14
b = 2A / 14 -(2)
Then
A = 1/2*c*h
c = 2A / h -(3)
Now, we will use the triangle inequalities:
a < b+c2A/12 < 2A/14 + 2A/h
Solve it and get
h<84
b < a+c2A/14 < 2A/12 + 2A/h
Solve it and get
h > -84
c < a+b2A/h < 2A/12 + 2A/14
Solve it and get
h > 6.46
From all the three inequalities we get:
6.46<h<84
So, the longest possible altitude of the third altitude (if it is a positive integer) is 83.
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how long word it take to travel a distance of 200 km if it traveling at a velocity of 55km
help me solve this!!!
Answer:
C
Step-by-step explanation:
Here we can see this is a bit of an trial and error, let's go through the options individually.
To find whether the ordered pair satisfies the equation, we will substitute x and y into the equation. To have the ordered pair to satisfy the equation, the value must be 7.
A) Given x = -5 , y = 3,
[tex]-5x+3y= - 5(-5)+3(3)\\=25+9\\= 34\\34 \neq 7[/tex]
Therefore this pair does not satisfy the equation.
B) Given x = 2, y = -1,
[tex]-5x+3y = -5(2)+3(-1)\\= -10-3\\=-13\\-13 \neq 7[/tex]
Therefore this pair does not satisfy the equation.
C) Given x = 7, y = 14,
[tex]-5x+3y = -5(7)+3(14)\\= -35 + 42\\= 7[/tex]
Therefore this pair satisfy the equation.
D) Given x = -2, y =[tex]-\frac{13}{5}[/tex],
[tex]-5x+3y = -5(-2)+3(-\frac{13}{5} )\\=-10-\frac{39}{5} \\=-17.8 or -17\frac{4}{5} \\-17.8\neq 7[/tex]
Therefore this pair does not satisfy the equation.
Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim. Carter motor company claims that its new sedan, the libra, will average better than 32 miles per gallon in the city. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.
Rejecting the null thesis means that;
There's sufficient substantiation to support the claim that the mean is lesser than 32 long hauls per gallon.
For thesis testing, the first thing to define is the null and indispensable thesis.
In thesis testing, especially one comparing two sets of data, the null thesis plays the devil's advocate and generally takes the form of the contrary of the proposition to be tested. It generally contains the signs = , ≤ and ≥ depending on the directions of the test. It generally maintains that, with arbitrary chance responsible for the outgrowth or results of any experimental study/ thesis testing, its statement is true.
The indispensable thesis generally confirms the proposition being tested by the experimental setup. It generally contains the signs ≠,< and> depending on the directions of the test. It generally maintains that significant factors other than arbitrary chance, affect the outgrowth or results of the experimental study/ thesis testing and affect in its own statement.
For this question, Carter Motor Company claims that its new hydrofoil, the Libra, will total better than 32 long hauls per gallon in the megacity. And since this is talking distance covered per gallon of energy, better means that the new hydrofoil will total further than 32 long hauls per gallon.
So, the null thesis negating this claim would be that there is not significant substantiation to conclude that the normal of the new hydrofoil will be more or lesser than 32 long hauls per gallon.
That is, the new normal will be lower than or equal to 32 long hauls per hour.
And the indispensable thesis will confirm the claim that there's significant substantiation to conclude that the normal of the new hydrofoil will be more or lesser than 32 long hauls per gallon.
Mathematically,
The null thesis is represented as
H ₀ μ ≤ 32 long hauls per gallon
The indispensable thesis is given as
Hₐ μ> 32 long hauls per gallon
So, after the thesis test has been conducted, rejecting the null thesis means accepting the indispensable thesis and its statement that there's significant substantiation to conclude that the normal of the new hydrofoil will be more or lesser than 32 long hauls per gallon.
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need help solving for x
Answer:
x = 4
Step-by-step explanation:
the two angles you see are alternate exterior angles, meaning they are equal to eachother.
32x + 2 = 33x - 2
subtract so that x is on one side. 33 - 32 = 1, so the equation would be
2 = x - 2
add 2 to both sides.
4 = x
hope i helped.
Answer:
x = 16x
Step-by-step explanation:
32x divided by 2 equals 16x
33x minus 2 also equals 16x
Since the numbers are the same for both equations X equals 16x
EVALUATE (mn)(x) for x = -3.
The value of expression (m n)(x) for x=-3 by putting x=-3 is -3mn.
Given Expression (m n)(x) and we have to find the value for x=-3.
Expression refers to the combinations of numbers, symbols, variables. It is usually not present in equal to form. It is often solved for finding the overall relationship between variables. It is often expresses quantity of one variable and combination of some material.
The given expression is (mn)(x)
To find the value of expression for x=-3, we have to just put the value of x=-3
mn(x)=(mn)(-3)
=(mn)-3
=-3mn
Hence the value of expression (mn)(x) for x=-3 is -3mn.
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The length of arc PR is 12 centimeters and its measure is 60° on circle O.
A circle with center O has two radii OP and OR is shown.
The area of sector POR is approximately
square centimeters, and the perimeter of sector POR is approximately
centimeters.
The area of sector POR is approximately equal to 68.76 square centimeters, and the perimeter of sector POR is approximately equal to 34.92 centimeters.
How to calculate the length of the arc?In Mathematics, if you want to calculate the length of an arc formed by a circle, you will divide the central angle that is subtended by the arc by 360 degrees and then multiply this fraction by the circumference of the circle.
Mathematically, the length of an arc formed by a circle is given by:
Length of an arc = 2πr × θ/360
Substituting the given parameters into the formula, the radius of this circle is given by;
12 = 2 × 3.142 × r × 60/360
12 = 2 × 3.142 × r × 1/6
72 = 6.284r
Radius, r = 72/6.284
Radius, r = 11.46 centimeters.
Now, we can calculate the area of sector POR:
Mathematically, the area of a sector can be calculated by using this formula:
Area of sector = πr² × θ/360
Where:
r represents the radius.θ represents the central angle.Substituting the given parameters into the formula, we have;
Area of sector = 3.142 × 11.46² × 60/360
Area of sector = 3.142 × 131.3316 × 1/6
Area of sector = 68.76 square centimeters.
Next, we would calculate the perimeter of sector POR:
Perimeter of sector POR = 2r + Length of an arc
Perimeter of sector POR = 2(11.46) + 12
Perimeter of sector POR = 22.92 + 12
Perimeter of sector POR = 34.92 centimeters.
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12. Create a two-way relative frequency table (in decimals) for the data in Exercise 9. Communication Gender Male Femal e Total Text 150.0 Talk 72.0 36.0 Social Media Apps 28.0 32.0 Total 250.0 150.0 12. Create a two - way relative frequency table ( in decimals ) for the data in Exercise 9 . Communication Gender Male Femal e Total Text 150.0 Talk 72.0 36.0 Social Media Apps 28.0 32.0 Total 250.0 150.0
See below for the steps to the two-way relative frequency table
How to create the two-way relative frequency table?The table of values is given as:
Communication Gender Male Female Total
Text 150.0 82.0 232.0
Talk 72.0 36.0 108.0
Social Media Apps 28.0 32.0 60.0
Total 250.0 150.0 400.0
Start by dividing each cell by the column total
Male Female Total
Text 150.0/250 = 0.6 82.0/150 = 0.55 232/400 = 0.58
Talk 72.0/250 = 0.288 36.0/150 = 0.24 108/400 = 0.27
Social Media Apps 28.0/250 = 0.112 32.0/150 = 0.21 60/400 = 0.15
Rewrite properly as:
Male Female Total
Text 0.60 0.55 0.58
Talk 0.288 0.24 0.27
Social Media Apps 0.112 0.21 0.15
Total 1 1 1
The above represents the two-way relative frequency table
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On applying a load of 100 N to a wire of a cross-sectional area of 0.01 m2, a strain of 6.25×10-3 is produced. Find Young’s Modulus for the wire.
The young modulus of a wire with an area of 0.01 m², that strain 6.25 * 10⁻³ if a load of 100N is applied is 16000 N/m²
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
The young modulus is given as:
Young modulus = stress / strain = load / (area * strain) = 100 / (0.01 * 6.25 * 10⁻³) = 16000 N/m²
The young modulus of a wire with an area of 0.01 m², that strain 6.25 * 10⁻³ if a load of 100N is applied is 16000 N/m²
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Help I need this urgently please help!
Using translation concepts, the transformation is defined by:
J. A translation of triangle XYZ to the right.
What is a translation?A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction in it's definition.
In this problem, the orientation of the triangle remains the same, hence it is a translation of the triangle to the right.
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If two-thirds of a number is diminished by 8, the result is 32
Answer:
60
Step-by-step explanation:
Let's call the number A.
We are told that:
(2/3)A - 8 = 32
Multiply both sides by 3 and rearrange:
3*[(2/3)A - 8 = 32]
2A - 24 = 96
2A = 120
A = 60
CHECK:
Does (2/3) of 60 minus 8 equal 32?
(2/3)*(60) = 40
40 - 8 = 32
YES
The number is 60
Triangle lmn has sides measuring 7 meters and 6 meters and a perimeter of 16 meters. heron’s formula: area = startroot s (s minus a) (s minus b) (s minus c) endroot what is the area of triangle lmn? round to the nearest square meter. 3 square meters 9 square meters 28 square meters 34 square meters
Answer:
9 m²
Step-by-step explanation:
s = half the perimeter = (a+b+c)/2
the perimeter in our case is
a+b+c = 16
so, s = 16/2 = 8
and the sides are
7 m
6 m
16 - 7 - 6 = 3 m
therefore, we get
area = sqrt(8(8-7)(8-6)(8-3)) = sqrt(8×1×2×5) = sqrt(80) =
= 8.94427191... ≈ 9 m²
Answer: the answer is b
Step-by-step explanation:
Javed saves Rs 50 000 in a bank. The annual interest is 2.5%. How much money will Mr Javed have in the account after one year? Javed saves Rs 50 000 in a bank . The annual interest is 2.5 % . How much money will Mr Javed have in the account after one year ?
Step-by-step explanation:
Which segment is a reflection of segment AB over the line x = 1?
Line segment C D
Line segment E F
Line segment G H
Line segment I J
The reflection of segment AB over the line x = 1, will be the line segment EF. Then the correct option is B.
What is a transformation of geometry?A spatial transformation is each mapping of feature shapes to itself, and it maintains some spatial correlation between figures.
Reflection does not change the size and shape of the geometry.
The line segment AB is given.
Then the reflection of segment AB over the line x = 1, will be the line segment EF.
Then the correct option is B.
The missing diagram is given below.
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Answer:
its BStep-by-step explanation:
Reflecting a Line Segment Across the X-axis or Y-axis
Step 1: Identify the endpoints of the line segment.
Step 2: Reflect the endpoints of the line segment.
Step 3: Connect the reflected endpoints in a straight line to form the reflected line segment.
A reflection across line moves each point to such that line is the perpendicular bisector of the segment connecting
Consider the equality xy=k. Write the following inverse proportion: y is inversely proportional to x. When y = 6, x = 3.
3/1 =k/6
1/6 = k/3
6/1 = 1/6
The correct expression for the inverse proportion is k/6 = 3/1
Inverse proportionsGiven the inequality xy = k
If y is inversely proportional to x, then;
y = k/x
Given that y = 6, and x = 3, then;
6 = k/3
Swap
k/3 = 6
k/6 = 3/1
Hence the correct expression for the inverse proportion is k/6 = 3/1
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An arithmetic sequence has this recursive formula:
a₁ = 5
an = an-1-4
What is the explicit formula for this sequence?
Answer:
[tex]a_n = 5 + (n-1)(-4)[/tex]
Step-by-step explanation:
So the explicit formula is generally defined as [tex]a_n = a_1 + d(n-1)[/tex]. where d is essentially the "slope", basically how much it's changing from term to term. anyways if you look at the recursive formula you'll notice it's taking the previous term and subtracting 4. This is what d is going to be, -4 and since a_1 is given you plug that in as well. This gives you the equation
[tex]a_n = 5 -4(n-1)[/tex] which can also be written as [tex]a_n = 5 + (n-1)(-4)[/tex]
Type the correct answer in each box. Use numerals instead of words.
What are the decimal expansions of the following numbers? Expand to four decimal places if the number is a repeating decimal.
3/9
2/5
7/8
4/6
I NEED HELP PLEASEEEEEE
Answer:
A. The function is always decreasing
Step-by-step explanation:
we read a graph from left to right, so we can always compare the increase/decrease of a function by seeing how an x value compares with an x value to the left
(I am aware that this paragraph is really confusing)
we can see that as x increases, from -∞ to 0,
y decreases in correspondence
and that as x increases, from 0 to ∞,
y decreases in correspondence also
So, even though the graph doesn't quite look like it, when x < 0; the function decreases, when x > 0; function decreases--so the function is always decreasing
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Given: ∠TUW ≅ ∠SRW; RS ≅ TU
Prove: ∠RST ≅ ∠UTS
Triangles R W S and U W T connect at point W. A line is drawn to connect points S and T. Another line is drawn from point R to point V and down to point U. Sides S R and T U are congruent. Angles S R W and W U T are congruent.
Complete the paragraph proof:
It is given that ∠TUW ≅ ∠SRW and RS ≅ TU. Because ∠RWS and ∠UWT are vertical angles and vertical angles are congruent, ∠RWS ≅ ∠UWT. Then, by AAS, △TUW ≅ △SRW. Because CPCTC, SW ≅ TW and WU ≅ RW. Because of the definition of congruence, SW = TW and WU = RW. If we add those equations together, SW + WU = TW + RW. Because of segment addition, SW + WU = SU and TW + RW = TR. Then by substitution, SU = TR. If segments are equal, then they are congruent, so SU ≅ TR. Because of
, △TRS ≅ △SUT, and because of
, ∠RST ≅ ∠UTS.
The information about the triangle shows that
TRS ≅ △SUT because of SAS, CPCTC.
How to explain the triangle?It should be noted that from the information given, W is the intersection point of line segments TS and RU.
Also, RWS and UWT are equal because they're vertical angles.
Therefore, by AAS, TUW and SRW are equal. Also, TRS ≅ △SUT because of SAS, CPCTC.
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Answer: SAS and CPCTC
Step-by-step explanation:
Because of SAS, △TRS ≅ △SUT, and because of CPCTC, ∠RST ≅ ∠UTS.
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Kevin bought snacks for his team's practice. He bought a bag of popcorn for $1.60
and a 8-pack of juice bottles. The total cost before tax was $16.80. How much was
each bottle of juice?
URGENTTTT
Answer:
$1.90
Step-by-step explanation:
16.80 - 1.60 = 15.20, since we are finding the price of each bottle of juice.
1) Set up and equation equated to 15.20.
8x = 15.20
x = 15.20/8
x = 1.90
Therefore, each bottle of juice costs $1.90.
Find the following value.
Please help!!
Answer: f^-1(1) + f(-14) = 20, f^-1(-2) = 10
Step-by-step explanation:
When finding the inverse through a table of functions, we are doing the opposite of a function. For example:
If f(9) = 1, then, let me ask you, what is f^-1(1)? Well, that's just 9! You're basically doing the opposite.
An inverse through a table of functions is basically you trying to figure out what x-value did you input to get the f(x) value. A regular function is you trying to figure out what f(x) value did you get by inputting an x-value.
So, the inverse of f(1) is 9, and the regular function of -14 is equal to 11. We then add. 11+9 = 20.
The inverse of -2, like I said before, is you trying to find out the x value you put to get -2. Well looking at the table, it seems x was 10. Thus the inverse of -2 is 10.
Which of the following rational numbers is equivalent to a repeating decimal? a. 24/60 b. 30/64 c. 29/50 d. 35/60
Answer:
answer is D. 35/60
Step-by-step explanation:
35 divided by 60 is = 0.583333
which is a repeating decimal
Among the options, only a rational number (35/60) is equivalent to a repeating decimal. The correct answer is option (d).
To identify which of the given rational numbers is equivalent to a repeating decimal, we need to check their decimal representations.
a. 24/60 = 2/5 = 0.4 (terminating decimal, not repeating)
b. 30/64 = 15/32 = 0.46875 (terminating decimal, not repeating)
c. 29/50 = 0.58 (terminating decimal, not repeating)
d. 35/60 = 7/12 = 0.583333... (repeating decimal, as 3 repeats infinitely)
Among the options, only option d (35/60) is equivalent to a repeating decimal.
The repeating decimal representation is 0.583333... where the digit 3 repeats indefinitely.
This can be represented as 0.58(3).
The correct answer is option (d).
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