Answer: B
The answer would have to be B because when finding the perimeter, you add all the sides up together. If one of the width of the rectangle is 10, then the other would also be 10, which already makes 20. If both lengths are 12, they would add up to be 24. And finally, 20+24=44!
Which of the following is a factor of 9x^2-81?
x-27
3x-3
x-3
x-9
[tex]Hello[/tex] [tex]There![/tex]
I'll be helping your question today!
Let's do this step-by-step explanation!
[tex]9x^2-81[/tex]
Factor out common term 9: [tex]9(x^2-9)[/tex]
[tex]=9(x^2-9)[/tex]
Factor:[tex]x^2-9:(x+3)(x-3)[/tex]
[tex]=9(x+3)(x-3)[/tex]
Answer:
[tex]9(x+3)(x-3)[/tex]
The real answer is:
[tex]3x-3[/tex]
Hopefully, this helps you!!
#LearnWithBrainlyAlways~
[tex]SokkaBanned[/tex]
The factorization of [tex]9x^2 - 81[/tex] is given 9(x-3)(x+3). Therefore, (c) is the correct option.
Factorization is the method of simplification of algebraic expressions which contains variables and constants into form that can not be divided into further factors.
To factorize, we first check if any variable or constant can be taken common. Next we check for algebraic identities.
Given in the question,
[tex]= 9x^2 - 81\\\\= 9(x^2 - 9)\\\\=9(x^2-3^2)\\\\=9(x-3)(x+3)[/tex]
identity used : [tex](a^2-b^2) = (a-b)(a+b)[/tex]
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Which of these plants do not have special tissues (is not a vascular plant) to deliver food and water to its cells?
Question 25 options:
Maple Tree
Dogwood Tree
Tomato plant
Liverwort
Liverwort do not have special tissues to deliver food and water to its cells.
What is a Liverwort?They are referred to as descendants of the first land plants and are flowerless and spore-producing.
They are however non-vascular which means they lack special tissues to deliver food and water to its cells thereby making option D the most appropriate choice.
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Which of these expressions are rational numbers, and which are rational numbers?
Select either rational or irrational for each expression
Step-by-step explanation:
1 irrational
2 rational
3 rational
4 rational
ITS 25 POINTS PLEASE ANSWER
Answer:
17 rows
Step-by-step explanation:
We know that f(x) = 2x² - 10x models the total number of spaces and x models the number of rows.
Since we are given the total number of spaces of 408. We let f(x) = 408
2x² - 10x = 408
Now we solve as a quadratic, subtract 408 to both sides
2x² - 10x - 408 = 0
Divide 2 on both sides
x² - 5x - 204 = 0
We look for terms that multiply to -204 and add to -5.
Those terms are -17 and 12
x² - 17x + 12x - 204 = 0
x(x-17) + 12(x-17)
(x+12)(x-17)
x = -12 x = 17
We can not have -12 rows but we can have 17 rows.
17 rows is the answer.
What is the equation of the line parallel to y = 4x - 6 and passing through (6,-3)?
Answer:
y = 4x - 27
Step-by-step explanation:
Parrel lines have the same slope
Point-Slope Form:
(6, -3)
y - y1 = m(x - x1)
y - (-3) = 4(x - 6)
y + 3 = 4x - 24
- 3 -3
y = 4x - 27
Hope this helps!
Find the square root
Answer:
Square root of 169 is 13.
Step-by-step explanation:
13*13=169
Find the value of x for which p is parallel to q (9x+8)
An architect built a scale model of a museum using a scale in which 3 inches represents
60 feet. The height of the museum is 270 feet.
What is the height of the scale model in inches?
A 13. 5 in.
B 9. 5 in.
C 27 in.
D 18 in.
please help its hard for me!!!
Answer:
A. 13.5
Step-by-step explanation:
60 ft. = 3 in.
20 ft. = 1 in.
270/20 = 13.5
work out the missing numbers for a b and c mathwatch fractions adding subtracting
Antoine and Adriane are each at the top of a Ferris wheelAfter one revolution each will again be at the topWhich sinusoid (sine or cosine) should you graph to model the ride of your chosen rider? Why? Assume that each Ferris wheel starts at time= 0 seconds
Answer(s):
[tex]\displaystyle y = 100sin\:(\frac{\pi}{50}x + \frac{\pi}{2}) + 100 \\ y = 100cos\:\frac{\pi}{50}x + 100[/tex]
Step-by-step explanation:
[tex]\displaystyle y = Asin(Bx - C) + D \\ \\ Vertical\:Shift \hookrightarrow D \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \\ Amplitude \hookrightarrow |A| \\ \\ Vertical\:Shift \hookrightarrow 100 \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \hookrightarrow \boxed{-25} \hookrightarrow \frac{-\frac{\pi}{2}}{\frac{\pi}{50}} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \hookrightarrow \boxed{100} \hookrightarrow \frac{2}{\frac{\pi}{50}}\pi \\ Amplitude \hookrightarrow 100[/tex]
OR
[tex]\displaystyle y = Acos(Bx - C) + D \\ \\ Vertical\:Shift \hookrightarrow D \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \\ Amplitude \hookrightarrow |A| \\ \\ Vertical\:Shift \hookrightarrow 100 \\ Horisontal\:[Phase]\:Shift \hookrightarrow 0 \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \hookrightarrow \boxed{100} \hookrightarrow \frac{2}{\frac{\pi}{50}}\pi \\ Amplitude \hookrightarrow 100[/tex]
You will need the above information to help you interpret the graph. First off, keep in mind that although this looks EXACTLY like the cosine graph, if you plan on writing your equation as a function of sine, then by all means, go for it, but be careful and follow what is explained here. Now, as you can see, the photograph on the right displays the trigonometric graph of [tex]\displaystyle y = 100sin\:\frac{\pi}{50}x + 100,[/tex] in which you need to replase "cosine" with "sine", then figure out the appropriate C-term that will make the graph horisontally shift and map onto the cosine graph [photograph on the left], accourding to the horisontal shift formula above. Also keep in mind that the −C gives you the OPPOCITE TERMS OF WHAT THEY REALLY ARE, so you must be careful with your calculations. So, between the two photographs, we can tell that the sine graph [photograph on the right] is shifted [tex]\displaystyle 25\:units[/tex]to the right, which means that in order to match the cosine graph [photograph on the left], we need to shift the graph BACKWARD [tex]\displaystyle 25\:units,[/tex]which means the C-term will be negative, and by perfourming your calculations, you will arrive at [tex]\displaystyle \boxed{-25} = \frac{-\frac{\pi}{2}}{\frac{\pi}{50}}.[/tex]So, the sine graph of the cosine graph, accourding to the horisontal shift, is [tex]\displaystyle y = 100sin\:(\frac{\pi}{50}x + \frac{\pi}{2}) + 100.[/tex]Now, with all that being said, in this case, sinse you ONLY have a graph to wourk with, you MUST figure the period out by using wavelengths. So, looking at where the graph hits [tex]\displaystyle [220, 100],[/tex]from there to [tex]\displaystyle [120, 100],[/tex]they are obviously [tex]\displaystyle 100\:units[/tex]apart, telling you that the period of the graph is [tex]\displaystyle 100.[/tex]Now, the amplitude is obvious to figure out because it is the A-term, but of cource, if you want to be certain it is the amplitude, look at the graph to see how low and high each crest extends beyond the midline. The midline is the centre of your graph, also known as the vertical shift, which in this case the centre is at [tex]\displaystyle y = 100,[/tex]in which each crest is extended one hundred units beyond the midline, hence, your amplitude. So, no matter how far the graph shifts vertically, the midline will ALWAYS follow.
**I knew exactly what you were talking about the moment you posted this, so here was what you were looking for. It really does not matter which sinusoid and person you select because you will get the same information either way.
I am delighted to assist you at any time.
The graph of cosine function is to model the ride of your chosen rider.
What is mean by Function?A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
Let us assume that,
Function is,
f(x) = sin(x)
The curve of the sine function crosses the y-axis at the origin, heads up to y = 1 at x = π/2 and down to y = -1 at x = 3π/2.
Domain: (-∞, ∞)
Range: [-1, 1]
For f(x) = cos(x)
The curve of the cosine function crosses the y-axis at (0, 1) which is its maximum, heads down to y = -1 at x = π then heads up again.
Domain: (-∞, ∞)
Range: [-1, 1]
Given information:
Antoine and Adriane begin their journey at the top of the Ferris wheel.
After one revolution, they will again be at the top of the wheel.
If the wheel starts when time t = 0 seconds, and they begin their journey at the top of the wheel (the maximum point), the most appropriate graph to model their ride is the graph of the cosine function since it is at its highest point when x = 0.
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100 POINTS WILL GIVE BRAINLIEST TOO FIRST RESPONSE
Answer:
58
Step-by-step explanation:
Angle D is an inscribed angle that intercepts arc ZBC, so the measure of angle D is half the measure of arc ZBC.
m<D = (1/2)[m(arc)ZBC]
10x + 16 = (1/2)(7x - 5 + 154)
20x + 32 = 7x + 149
13x = 117
x = 9
m(arc)BZ = 7x - 5 = 7(9) - 5 = 63 - 5 = 58
find the value of x and y
Answer:
Supplementary to x is a 90° angle (right angle) which means that both x and the right angle will have to equal 180 degrees:
90 + x = 180
-90 -90
x = 90°
Let's find the angle measure that is supplementary to y.
A 5 sided shape is equal to 540 degrees (you could find this by using the formula: (n - 2) x 180 where n is the number of sides)
so given interior angles:
90 + 80 + 98(supplementary to angle 82 degrees) + 136 + 136(two equal angle measures in the polygon that are missing)
= 540(which is correct), so now we know the two missing angles, 136, besides the angle supplementary to 82 degrees.
136 is supplementary to y so:
136 + y = 180
-136 -136
y = 44°
The lengths, in seconds, of four folk songs are
128, 165, 182, and 141.
The lengths, in seconds, of four pop songs are
90, 98, 102, and 94.
What is the mean absolute deviation, in
seconds, of the folk songs?
A. 18
C. 19.5
B. 18.25
D. 19.75
Answer:
C. 19.5
Step-by-step explanation:
I'll give you brainlies if you help me on this!
Answer:
5/4 ounces.
Step-by-step explanation:
There are 4 marks. So 1/4 is the smallest one. There are 5 of them. 5x1/4 is 5/4 or 1 1/4
[tex]\tt \dfrac{1}{4}+\dfrac{2}{4}+\dfrac{3}{4}+1+\dfrac{5}{4}=\dfrac{15}{4}[/tex]
Solve the equation
|2x+1|=-13
no solution
O x = -7
O x= -14, 12
O x=-7, 6
Answer:
no solution
Step-by-step explanation:
There is no value of x that makes the equation be true since an absolute value can never be negative.
what is the value of the expression
2[32-(4-1)^3]
Answer:
10
Step-by-step explanation:
The first step is to calcuate inside perthenses .
The second step is to find value of expontents.
The third step is to add then subtract.
The fourth step is to multiply.
My calculator does not have a 3 key that works! How can I use this broken calculator to do 23 x 45.
[tex]\longrightarrow[/tex] This problem can be tackled by using distributive property of multiplication .
It states for any three numbers a,b and c
[tex]\green{ \underline { \boxed{ \sf{(a±b)\times c = a \times c±b\times c}}}}[/tex]
Similarly,
[tex]\quad[/tex]23 × 45
[tex]\longrightarrow[/tex](21+2) ×45
[tex]\longrightarrow[/tex]21×45+2×45
[tex]\longrightarrow[/tex]945 + 90
[tex]\longrightarrow[/tex] 1035
It can also be done as-
[tex]\quad[/tex]23 × 45
[tex]\longrightarrow[/tex](25-2) ×45
[tex]\longrightarrow[/tex]25×45-2×45
[tex]\longrightarrow[/tex]1125-90
[tex]\longrightarrow[/tex] 1035
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
A student sends a text to three friends. Then those three people each forward the text to three of their friends.
(We'll call that "round 2.") Then the "round 2" recipients also each forward it to three friends. (That's "round 3.")
1. How many students receive the message in each "round" of texts?
Round 1: 3 people
Round 2:
Round 3:
2. Explain your reasoning.
Answer:round 2 = 9
round 3 = 27
Step-by-step explanation:
x3
Which statement accurately describes the graph 2y = 4x + 8?
-
A
an increasing line that passes through (0, 4)
B
a decreasing line that passes through (0,0)
С
an increasing line that passes through (0,8)
D
a decreasing line that passes through (0, 2) ?
Answer:
its the 3rd one :
Step-by-step explanation:
To find the y-intercept, begin at the origin and move vertically to the graphed line. To find the slope, use two ordered pairs on the line and substitute into the equation
this is because the equation is y^1 - y^2 / x^1 - x^2
brainiest
Please help me find the answer!!
Picture ⬇️
Answer:
(1) y≥-3x + 4
Answer:
ASWER ( 1 )
Step-by-step explanation:
[tex]y\geq -3x+4[/tex]
HOPE THAT HELP'S !
5) You roll a six-sided die twice. What is the probability of rolling an even number and then an odd number?
A)1/16
B)1/8
C)1/5
D)1/2
If a regular rectangle has 15 cm as the length and 20 cm as the breadth, then find the Are of rectangle ?
Question :-
If the Reactangle has length of 15 cm and the Breadth of 20 cm . Calculate the Area of Rectangle .Answer :-
Area of Rectangle is 300 cm² .Explanation :-
As per the provided information in the given question, we have been given that a Rectangle has the Length as 15 cm and it's Breadth is given 20 cm . And, we have been asked to calculate the Area of Rectangle .
For calculating the Area of Rectangle , we will use the Formula :-
[tex] \bigstar \: \: \boxed {\sf {Area \: of \: Rectangle = Length \times Breadth}} [/tex]
Therefore , by Substituting the given values in the above Formula :-
⇒ Area of Rectangle = Length × Breadth
⇒ Area of Rectangle = 20 × 15
⇒ [tex] \textbf {\textsf {Area of Rectangle = 300 cm²}} [/tex]
[tex] \underline {\rule {180pt} {4pt}} [/tex]
The area of the given rectangle.
Solution:[tex]area = length \times width[/tex]
[tex]a = 15 \times 20[/tex]
[tex]a = 300 \: {cm}^{2} [/tex]
Therefore, the area of the given rectangle is 300 square centimeters.
Plss help if you I don’t how to find the answer
answer
11x = 480
i dont know
I will mark brainiest whoever answers the question first i promise
Find the LCM of 36,72,90. please help me
360 is the lcm of 36 72 and 90
express 110 km per hour as a rate
Answer:
68.35 Miles Per Hour that quals :)
Answer:
110 kilometers per hour equals 68.351 miles per hour
Step-by-step explanation:
Amount From To Conversion formula The conversion factor from kilometers per hour to miles per hour is 0.62137119223783, which means that 1 kilometer per hour is equal to 0.62137119223783 miles per hour: 1 km/h = 0.62137119223783 mph.
hope this helps
7. Write equations that show how these cost variables depend on the
number n of customers for the two-day tours.
a. bike rental B
b. lunch and snacks L
c. hotel rooms H
d. rental of the tour support van V
Can anyone help me with number 5??
Which answer choice would be the best topic for a personal narrative?
what I ate for breakfast
my favorite movie or TV show
the history of my hometown
a mistake I made
Answer:
a mistake i made
Step-by-step explanation:
personal narrative is like an autobiography or a story about yourself
Answer: D " A mistake i made."
Step-by-step explanation:i took the test and it is a personal topic hope this helps. :)
Let f(x) = x ^ 2 - x - 2 and g(x) = - 6x - 8. Find g(2) and f(g(2)). Mathfrak g (2)= Box (Simplify your answer. ) f(g(2)) = ( Simplify your answer. ).
The value of the function f(g) after simplifying and putting 2 in place of x is -20 and the value of f(g(2)) is 418.
What is composite function?When a function is written inside the another function, then such function is called the composite function.
The first function given in the problem is,
[tex]f(x) = x^2 - x - 2[/tex]
The second function given,
[tex]g(x) = - 6x - 8[/tex]
To find out the value of g(2), put the 2 on place of variable x in the above equation as,
[tex]g(2) = - 6(2) - 8\\g(2)=-12-8\\g(2)=-20[/tex]
The composite function f(g(x)) can be given as,
[tex]f(g(2))= (-20)^2 - (-20) - 2\\f(g(2))=418[/tex]
Thus, the value of the function f(g) after simplifying and putting 2 in place of x is -20 and the value of f(g(2)) is 418.
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One pack of sliced cheese weighs 350 grams. How many packages would you need to
buy to have at least 1 kilogram of cheese?
RIGHT ANSWERS ONLY!!!!!!!
Answer:
3 packages
Step-by-step explanation:
350+350=700
700+350=1100
1000 grams = 1 kilogram
Answer:
the answer is 3 pg and 1 kg
Step-by-step explanation: