Factor the expression 25-40 x+16 x² is [tex](4x-5)^2[/tex]
In mathematics, factorization is defined as breaking down or decomposing an entity (such as a number, matrix, or polynomial) into another entity or product of coefficients. Splitting the mean term means that the mean term of the quadratic must be rewritten as the sum or difference of two terms. The middle term should be split into two parts in terms of the sum or difference of the terms. The general form of the quadratic equation is [tex]ax^2+ bx +c=0[/tex]On rearranging the equation , we get
[tex]16x^2-40x+25=0[/tex] ...(1)
To split the middle term of the quadratic equation, we need to look at the middle term of the quadratic equation under consideration.
Midterm is 40 x , to split the middle term, use the sum-and-product form which is
" The sum-product form is the product of intermediate terms after splitting and must equal a × c and the sum must equal b "
[tex]f(x)=16x^2-40x+25[/tex]
here a = 16 , b = -40 and c = 25
We need to divide into 40x in two parts
40x = 20x + 20x
The product of the terms is [tex]16\times25=400[/tex]
Now we can rewrite 40x as 20x + 20x
Putting in equation (1) , we get
[tex]16x^2-(20+20)x+25=0\\\\(16x^2-20x)-(20x-25)=0\\\\4x(4x-5)-5(4x-5)=0\\\\(4x-5)(4x-5)=0[/tex]
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23^8*23^n=(23^5)^3. what is the answer
[tex]23^8\cdot 23^n=(23^5)^3\implies \underset{same~base}{\stackrel{same~exponent}{23^{8+n}=23^{(5)(3)}}}\implies 8+n=(5)(3) \\\\\\ 8+n=15\implies n=7[/tex]
Solve each inequality using a table.
(Hint: For more accurate results, set ΔTbl=0.001 . )
3 log x+log (x+2)>1
After solving the given inequality the answer is 3logx+log₁₀(x+2)>1.
What exactly do we mean by inequality?In mathematics, an inequality is a relationship that involves a non-equal comparison of two numbers or other mathematical expressions.It is most commonly used to compare two numbers' sizes on a number line.So,
Given: 3log x + log(x+2) > 1
3log x + log(x+2) > 1 ⇒ 3logx+log₁₀(x+2)>1
Therefore, after solving the given inequality the answer is 3logx+log₁₀(x+2)>1.
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What is the value of each logarithm?
c. log₆₄1/32
The value of given logarithm log₂⁶(1/32) is -5/6
The properties of log square measure wont to expand one log into multiple logs (or) compress multiple logarithms into one logarithm.A log is simply in a different way of writing exponents. Thus, the properties of logarithms square measure derived from the properties of exponents.There square measure four necessary index properties that square measure listed below:logₐ mn = logₐ m + logₐ n (product property)logₐ m/n = logₐ m - logₐ n (quotient property)logₐ mn = n logₐ m (power property)We have given a logarithm log₂⁶(1/32) .
Using base change property which is given by
[tex]log_b^na^m=\frac{m}{n} log_ba[/tex]
The given logarithm becomes -
log₂⁶(1/32) = 1/6 log₂(1/32)
Using quotient property which is given by
logₐ m/n = logₐ m - logₐ n
The given logarithm becomes -
1/6 log₂(1/32) = 1/6 [ log₂1 - log₂32]
= 1/6 [ 0 - 5 ]
= -5/6
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Solve each equation. Check your answers.
2 log x=-1
2 log(x) = -1 => x = 0.3162, by properties of logarithm.
What is Logarithm?The opposite of exponentiation is the logarithm.This indicates that the exponent to which a fixed number, base b, must be raised in order to obtain a specific number x, is represented by the logarithm of that number.A number's natural logarithm is its logarithm to the base of the transcendental and irrational number e, which is roughly equivalent to 2.718281828459.Now,
2 log(x) = -1
=> log (x) = [tex]\frac{-1}{2}[/tex]
Since, generally the base of log is 10, raising them to 10.
=> [tex]10^{log_{10}(x)}=10^{\frac{-1}{2}}[/tex]
=> x = 0.3162 ( as [tex]a^{log_a(x)} = x[/tex])
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What is the simplified value of (1/64)⁻¹/₆ ?
Express 64 as a product of its prime factors. The indices rule states
a^-n= 1/a^n. Apply the power rule (a^m)^-n= a^(-mn).
64 = 2x2x2x2x2x2 = 2^6
(1/2^6) = 2^-6
2^(-6x-1/6) = 2^(6x1/6) = 2^1
2^1 = 2
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What is the inverse of y=2x+8?
In mathematics, an inverse function is one that "reverses" another function. The inverse of y = 2x + 8 is f⁻¹(x) = x/2 − 4.
What is meant by inverse function?The inverse function of a function f in mathematics exists a function that reverses the operation of f. If the inverse of f exists, it is shown by the f⁻¹. The inverse of f exists if and only if f exists bijective.
An inverse in mathematics is a function that "undoes" another function. In other words, if f(x) produces y, then y entered into the inverse of f produces x. An invertible function is one that has an inverse, and the inverse is represented by the symbol f ⁻¹.
Let the function be y = 2x + 8
Interchange the variables.
x = 2y + 8
Solving for y
y = x/2 − 4
Replace y with f⁻¹(x), we get
f⁻¹(x) = x/2−4
Verify if f⁻¹(x) = x/2−4 is the inverse of f(x) = 2x+8.
The inverse of y = 2x+8 is f⁻¹(x) = x/2−4.
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Select the correct answer.
What is the slope-intercept form of the equation of a line that passes through (5, -4) and has a slope of 3/4'?
A.
B.
C.
D.
y=-(3)/(4) × -(1)/(4)
y = 3/4 x +(1)/(4)
y = 3/4 x-(31)/(4)
y=3/4 x +(31)/(4)
Answer:
D
Step-by-step explanation:
٦٦٦٣ع٣٧ his face and I will ask my mom if I am ejjejdjjdhfjfjjfjdjjejriirjtndnjwjwuirjrnt778888766555673829
PLEASE HELP!! 20 points
The order of transformation which best describes how to sketch the graph of h(x) = ∛1 - x is: A. Starting with the graph of the basic function y = ∛x, horizontally shift the graph to the left one unit, and then reflect the graph about the y-axis.
The types of transformation.Generally, there are different types of transformation and these include the following:
RotationTranslationDilationReflectionWhat is a reflection?A reflection can be defined as a type of transformation which moves every point of the object by producing a flipped but mirror image of the geometric figure.
In this context, we can reasonably infer and logically deduce that the order of transformation which best describes how to sketch the graph of h(x) = ∛1 - x is to start by plotting the graph of the basic function y = ∛x, and then horizontally shift the graph of function y = ∛x to the left one unit, and then reflect the graph about the y-axis.
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Complete Question:
Which of the following order of transformations best describes how to sketch the graph of h(x) = ∛1 - x?
A. Starting with the graph of the basic function y = ∛x, horizontally shift the graph to the left one unit, and then reflect the graph about the y-axis.
B. Starting with the graph of the basic function y = ∛x, vertically shift the graph up one unit, and then reflect the graph about the y-axis.
C. Starting with the graph of the basic function y = ∛x, horizontally shift the graph to the left one unit, and then reflect the graph about the x-axis.
D. Starting with the graph of the basic function y = ∛x, horizontally shift the graph to the right one unit, and then reflect the graph about the y-axis.
Decide whether each claim is based on science or bias.
Claim
Basis of claim
People bred domestic cats from wildcats. They selected cats with desired traits as the parents for each generation. Evidence shows that humans developed many domestic animals and plants in much the same way.
Select ...
Select ...
An ad for a new type of tire describes it as "the best tire ever made." The ad shows pictures of the tire and compares it with an older type of tire. Under the pictures is a caption that states, "Look how much wider our new tire is."
The situations are classified as follows:
Cats... evidence ... : science.Tyre: bias.What is science in a claim?A claim is classified as science if there are experiments, or statistical tests, that prove the claim. In the cats experiment, there is evidence, hence it is science.
What is bias in a claim?A claim is classified as biased when no experiments are made, the observations are made with the "eye test". One example is watching a NFL game and saying that the team that gets the most passing yards generally wins, without making statistical tests to verify this.
For this problem, the ad for the tire is based on bias, as there were no experiments, just the eye test.
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Solve the equation V^3=36
Answer:
V= [tex]\sqrt[3]{36}[/tex]
Alternative Form
V≈3.301927
Evaluate
V
3
=36
Take the 3-th root on both sides of the equation
3
V
3
=
3
36
hope this helps now
Answer:
[tex]\mathrm{V=\sqrt[3]{36}}[/tex]
Step-by-step explanation:
Determine if 36 is a cube root
(a-b)•(a^2+ab+b^2) =
a^3+a^2b+ab^2-ba^2-b^2a-b^3 =
a^3+(a^2b-ba^2)+(ab^2-b^2a)-b^3 =
a^3+0+0-b^3 =
a^3-b^3
→ Using this checker, we can see that 36 is not a cube root because it cannot be factored as the difference between two perfect cubes.
Solve
v^3 - 36 = 0
v^3 = 36
v = ∛36
An athletic field is a rectangle 100 yards by 40 yards,
with a semicircle at each of the short sides. A running
track 10 yards wide surrounds the field. Find the
perimeter of the outside of the running track to the
nearest tenth of a yard. Find the area of the running
track to the nearest tenth of a yard.
The area of the running track to the nearest tenth of a yard is 1456 yards
How to calculate the area?The length of the field is 100 yards with a width of 40 yards.
Notice that the two semicircles on both ends form a circle with diameter 40 yards. Since it's diameter is 40, then it's radius is 20. We can get the length of the rectangle by subtracting two 20 from 100 or subtracting it's diameter to the entire length 100:
= 100-20-20
=100-40
=60
Since we formed a rectangle with two semicircles on both ends, we have the length of the rectangle 60 yards and the width 40 yards.
We first get the circumference of the circle.
C=πd
=(3.14)(40)=125.6
Then we get the measure of the two lengths of the rectangle which is 60
60+60=120
We multiply 145.6 by 10 and we get 1456
Therefore, the area of the running track to the nearest tenth of a yard is 1456 yards.
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Answer:
3570 square yards.
Step-by-step explanation:
A= ℓh-ℓh+πr square-πr square
A=60 * 100 - 40 * 100 + π(30) square - π(20) square
A= 6000-4000+900π-400π
A=2000+500π
A=2000+500*3.14
A=3570 square yards.
the owner of the outdoor furniture center decides to use the 120% markup. at the end of the season, he wants to sell all the benches that are in stock. he sells the benches for 20% off. what is the total price of a bench with this discount plus a 5% sales tax?
The total Cost of a bench is 1.008x.
According to the statement,
We have to find that the cost of the bench.
So, For this purpose, we know that the
The cost function may be accustomed find the typical cost, which is that the average amount of cash it costs to provide a unit.
From the given information:
The owner of the outdoor furniture center decides to use the 120% markup. at the tip of the season, he wants to sell all the benches that are available. he sells the benches for 20% off.
Then
Since we've provided that
Let the price price be 'x'.Mark up % = 120%
So, price value would be 120x/100
Then
Discount % = 20%
Amount of discount is given by
20* 1.2x/1000.
24x
So, it becomes,
Amount after discount is given by
1.2x - 0.24x = 0.96x
Amount of sales tax would be
100+5/100*0.96x
105/100*0.96x
1.008x.
So, The total Cost of a bench is 1.008x.
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Expand:-
100x+10y+z
Please tell the answer and process too.
Answer:
−100x +10y+z
Step-by-step explanation:
I use the Expand Using Sum/Difference Formulas. When I plug in -100x + 10y +z it gives out the same thing.
Jaycee has already saved $75 for an upcoming vacation. Every week, she adds another $15 to her vacation savings. The relationships between x, the number of weeks from now, and y, the amount Jaycee has in her vacation savings, is a linear relationship.
Write an equation to describe the linear relationship.
The equation to describe the linear relationship between x, the number of weeks from now, and y, the amount Jaycee has in her vacation savings is y = 75 + 15x
The equation to describe the linear relationship between x, the number of weeks from now, and y, the amount Jaycee has in her vacation savingsAmount Jaycee has saved = $75Additional amount jaycee saved per week = $15Number of weeks Jaycee saved = xThe amount Jaycee has in her vacation savings = yThe equation to describe the linear relationship:
The amount Jaycee has in her vacation savings = Amount Jaycee has saved + Additional amount jaycee saved per week(Number of weeks Jaycee saved)
y = 75 + 15(x)
y = 75 + 15x
For instance, if jaycee has saved for 5 weeks, the
amount Jaycee has in her vacation savings is
y = 75 + 15x
y = 75 + 15(5)
= 75 + 75
y = $150
Therefore, the equation to describe the linear relationship between x, the number of weeks from now, and y, the amount Jaycee has in her vacation savings is y = 75 + 15x
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God help me, I'm literally on the bus right now
The three that aren't answered
Answer:
Step-by-step explanation:
1. 170, 13 7/8, 13.5, 64/5
2. Plant D = 5.2 in Plant B =5.3 in Plant C = 5.5in Plant A =5.92
3. Chelsea, Finn, Erin, Mitchell
Please help me with this assignment! Grade 8th math
We need to know about translation, reflection and rotation to solve the problem. (1) We translate a triangle with respect to a horizontal and vertical direction. (2) We rotate a traingle about a given angle. (3) We refelct a triangle about a line of reflection which can be axis or vector.
(1) Translation of a triangle means changing it's position without changing the shape or size of the triangle. We translate a triangle with respect to a horizontal and vertical direction. We get the new triangle by adding the horizontal translation value to the x-coordinate and the vertical translation value to the y-coordinate.
(2) Rotation of a triangle is turning the triangle by an angle around a center point. When a triangle is rotated by 90° clockwise then (x,y) becomes (y,-x), when rotated by 90° anticlockwise (x,y) becomes (-y,x), when rotated by 180° clockwise or anticlockwise (x,y) becomes (-x,-y).
(3)Reflection of a triangle is finding a mirror like image of the triangle about a line of reflection. The line of reflection may be either of the axes, a vector. To find the image we have to find the coordinates of the triangle that are of same distance from the line of reflection on the opposite side like they are from the original triangle.
Therefore we learnt about translation, reflection and rotation and saw that (1) Translation needs a horizontal and vertical direction for translating, (2) Rotation needs an angle of rotation and a center point and (3) Reflection needs a line of reflection.
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PLEASE HURRY :
The sum of an integer and 2 times the next consecutive integer is 20. Find the value of the greater integer.
Answer:
9 and 11Step-by-step explanation:
Let two consecutive odd integers be x and x+2
Given, their sum is 20.
x+x+2=20
2x=20−2
2x = 18
x=9
Therefore, other number is
x+2=9
9+2=11.
Thus, the numbers are 9,11.
----------------
check
9 + 9 + 2 = 20
20 = 20
the answer is good
The value of the greater integer is 7.
What is addition?Addition is a way of combining things and counting them together as one large group. ... Addition in math is a process of combining two or more numbers.
here, we have,
The sum of an integer and 2 times the next consecutive integer is 20.
let, the number = x
so, the next consecutive integer = x+1
ATQ, x+2(x+1)=20
⇒3x+2=20
⇒3x=18
⇒x=6
i.e. the greater integer = x+1 = 7
Hence, the value of the greater integer is 7.
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The circle below has a sector 120° shaded. 120° 22 Find the area of the shaded sector. Use π = 7 and give your answer correct to 1 decimal place.
The circle below has a sector 120° shaded. 120° 22. Then area of sector is 200.
What is circle?A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre.
Area of sector=theta/360*πr^2
Given π = 7,
theta=120 degrees
d=22, so r=11.
Area of sector=210/360*7*7^2
=0.583*7*7*7
=200.08
Therefore area of sector is 200.
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What is the area of the parallelogram shown above?
Hint : The area of a parallelogram is
A = b x h.
Area = [?]ft^2
Answer: 299^2 ft
Step-by-step explanation: Literally all you have to do is Base X Hight and you get the answer. The base is basically just the length.
Hope this helps!
The number of buckets of paint n needed to paint a fence varies directly with the total area a of the fence and inversely with the amount of paint p in a bucket. It takes three 1 -gallon buckets of paint to paint 72 square feet of fence. How many 1-gallon buckets will be needed to paint 90 square feet of fence?
Approximately 1 gallon of 4 buckets will be needed to paint 90ft²of fences.
Formula used: N = kA / p
Given information:
N = 3 (buckets)k = constantA = area that is72p = components of a bucket (1 gallon in this case)So,
Determine k.
This is something you must work out with the units when solving for k.
3 buckets = k × 72 ft^2/1 gallon3 buckets × 1 gallon = k × 72 ft²3 bucket gallons / 72 ft² = k k = 1/24 bucket gallons / ft² = kThen, we get:
k = 0.04166666666 × bucket gallons / ft² = kNow, solve for 90 ft² as follows:
n = k × Area / pp = 1k = 0.04166666Area = 90So,
n = 0.041666666 × 90 / 1n = 3.75 bucketsAfter rounding off, the answer will be 4 buckets of 1-gallon.
Therefore, approximately 1 gallon of 4 buckets will be needed to paint 90ft²of fences.
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Use the equation y = -1/2х-3 for questions 1 and 2.
1. What is the form of this linear equation?
2.rewrite this equation in standard form.
1. The given equation is in the slope intercept form.
2. The standard form is x ₊ 2y = ₋6
3. The given equation is in the point slope form.
4. The standard form is 2x ₋ 3y = ₋3
Given,
the equation is y = ₋1/2x ₋ 3
the above equation is in the form of slope intercept form i.e,
y = mx ₊ c
to convert it into standard form i.e, ax ₊ by = c
therefore, 2y = ₋x ₋ 6
x ₊ 2y = ₋6
2. the equation is y ₋ 7 = 2/3 (x ₋ 9)
the above equation is in the form of point slope form.
i.e, y ₋ y₁ = m(x ₋ x₁)
therefore, to convert it into standard form i.e, ax ₊ by =c
y ₋ 7 = 2/3 (x ₋ 9)
3(y ₋ 7) = 2(x ₋ 9)
3y ₋ 21 = 2x ₋ 18
3y ₋ 2x = ₋18 ₊ 21
₋ 2x ₊ 3y = 3
2x ₋ 3y = ₋3
hence we get the required results.
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Choose the answer that represents the product below as a exponential
expression.
(-8) (-8) (-8) (-8) (-8) (-8) (-8)
OA. (-8)5
OB. (-8)-8
C. 7. (-8)
Answer:
[tex](-8)^7[/tex]
Step-by-step explanation:
You are multiplying (-8) 7 times. Therefore, it can be simplified down to [tex](-8)^7[/tex].
The table shows the starting and ending elevations of a hiking trail starting point 180 ft below sea level ending point 260 above sea levelhow much greater is the elevation of the ending point than the starting point
The difference on the change of elevation is 440 feet.
How to illustrate the information?From the information, it was stated that the hiking trail starting point is 180 ft below sea level and that the ending point is 260 above sea level.
Therefore, the difference in the change will be:
= Ending level - Starting level
= 260 - (-180)
= 260 + 180
= 440 feet
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Find the value of a^2+b when a=-2 and b=5
Answer:
answer is 9
Step-by-step explanation:
a*a+b.
-2*-2+5.
4+5=9
Suzie Clarke sells real estate at a 7%
straight commission. What is her com-
mission on the sale of a $98,000 home?
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{7\% of 98000}}{\left( \cfrac{7}{100} \right)98000}\implies 6860[/tex]
9.1-12.9 (show work pls)
Answer: 9.1 - 12.9 = -3.8
Step-by-step explanation:
9.1
12.9
———-
-3.8
the smaller number is getting subtracted by the bigger number which makes it a negative unless u made a error and placed the numbers in wrong order. The order of numbers won’t matter if it’s multiplication or addition. But if it’s division or subtraction it will change the final answer
the formula d=2r can be used to find the distance d traveled after 2 hours at rate r
solve the formula for r.
find the rate r when the distance traveled is 130 miles.
The rate r with the given distance is 65 miles/hour.
Given that, the formula d=2r can be used to find the distance d travelled after 2 hours at rate r.
What is the distance?Distance is a numerical or occasionally qualitative measurement of how far apart objects or points are. In physics or everyday usage, the distance may refer to a physical length or an estimation based on other criteria.
Now, the given formula is d=2r.
So, the formula for r is r=d/2
Distance = 130 miles
Then, the rate r = 130/2 = 65 miles/hour
Therefore, the rate r with the given distance is 65 miles/hour.
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is y=-x+4 a function?
Answer:
No
Step-by-step explanation:
Its not a function because there wouldn't be a reasonable answer if you try solving the equation.
Answer:
yes, it is a function
Step-by-step explanation:
y = -x + 4 is a line. In order to be a function every input can have only one output. Any x you put into that equation will spit out only one y. It passes the vertical line test (ALL lines except a vertical line pass the vertical line test.) So it is a function.
I need help solving this problem
((5-3)(2))÷2x2
Answer:
1
Step-by-step explanation:
because (5-3)=2 (2) means multiply the two 2's then divided by (2x2) so, (2x2)/(2x2) would be 4/4 = 1
Solve each equation. 2log x=-4
The value of x for the given logarithmic equation 2㏒x = -4 is x = 0.01.
What is logarithmic equation?A logarithmic equation contains the log of a variable-containing representation. To begin dealing with exponential equations, check to see if both sides of a equation can be described as powers of a exact number.
The ㏒x function has the following properties:
Product Rule : ㏒A + ㏒B = ㏒(AB)Quotient Rule: ㏒(A/B) = ㏒A - ㏒BPower Rule: n㏒A = ㏒AⁿNow, as per the given question;
The given equation is 2㏒x = -4.
Divide both side by 2.
㏒x = -2
Again, rewrite this function ㏒x = -2 in the exponential form by implementing properties of ㏒.
Let x and a be the positive real numbers such that a ≠ 1, then,
㏒ₐx = y is equivalent to [tex]a^{y}[/tex] = x.
Then,
10⁻² = x
Now, solve the value of x.
x = 1/100
x = 0.01 in the decimal form.
Therefore, the obtained value of the logarithmic function 2㏒x = -4 is x = 0.01.
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