CAN U CHECK MY ASWERS REAL QUICK?
Answer:
you dont have any answers but here they are:
18: 48
19: 5/48
20: 1/8
Step-by-step explanation:
for 18, you basically count ig
19, 1/4 (dime possibility) times 5/12 (<30 days)
20, 3/4 (> 5 cents) times 1/6 or 2/12 (september and october possibility)
hope this helps!
What does Descartes' Rule of Signs say about the number of positive real roots and negative real roots for each polynomial function?
P(x)=9x³-4x²+10
A mathematical formula called Descartes' Rule of Signs can be used to estimate how many real positive and negative roots there could be in a polynomial function.
Let check out the polynomial function using Descartes' Rule of Signs
The greatest number of positive real roots can be found by counting the sign changes in the coefficients of the polynomial function or the polynomial's terms, according to the rule.
Let's examine the sign changes in the example of the polynomial function P(x) = 9x3 - 4x2 + 10:
There is no change in sign because the first term has a positive coefficient (+9).A shift in sign occurs as a result of the second term's negative coefficient (-4).There isn't a change in sign because the third term has a positive coefficient (+10).We can infer from the sign shifts that there can only be a single positive real root.Applying Descartes' Rule of Signs to the polynomial P(-x), we may establish the maximum number of negative real roots. Let's see how the sign of P(-x) changes:
No change in sign occurs when the first term is multiplied by -1; it becomes -9x3.When the second term is multiplied by -1, the result has no sign change and is written as +4x2.The third term retains its sign when multiplied by -1, becoming +10.We can deduce that the polynomial P(x) = 9x3 - 4x2 + 10 has no negative real roots because there are no sign changes in P(-x).
According to Descartes' Rule of Signs, the polynomial P(x) = 9x3 - 4x2 + 10 can have a maximum of one positive real root and no negative real roots.
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If JK = 27, KI = 20, JI = 24, NL = 42, and ML = 50.4, find the
perimeter of ALMN. Round your answer to the nearest tenth if necessary.
Figures are not necessarily drawn to scale.
Find the lengths of the missing sides and add them up to get the perimeter.
AL = JI + IK = 24 + 20 = 44
KM = (JK × NL)/(NL + ML) = (27 × 42)/(42 + 50.4) ≈ 12.227
AM = KM + ML = 12.227 + 50.4 = 62.627
Perimeter = AL + LM + MN + NA = 44 + 50.4 + 42 + 62.627 ≈ 199.0
What is the perimeter of the quadrilateral ALMN if JK = 27, KI = 20, JI = 24, NL = 42, and ML = 50.4? Round to the nearest tenth if necessary.To find the perimeter of the quadrilateral ALMN, we need to add up the lengths of all four sides.
We were given the lengths of two sides, NL and ML, and we used this information to find the length of KM, which allowed us to find the length of AM.
To find the length of AL, we used the fact that JI + IK = JK, which allowed us to add the known lengths of JI and IK to get the length of JK.
Once we had all four side lengths, we added them up to get the perimeter of the quadrilateral.
Therefore, the perimeter of quadrilateral ALMN is approximately 199.0.
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4(2x−9)=5(3x−7)−1
what is x?
Answer:
x = 0
Step-by-step explanation:
4 ( 2x - 9 ) = 5 ( 3x - 7 ) - 1
8x - 36 = 15x - 35 - 1
-7x = 36 - 35 - 1
-7x = 0
x = 0
Answer:b
X= 0
Step-by-step explanation:
See work below
Tell weather the ordered pair is a solution of the linear soulution
x + y = -4 ----------------(1)
x -
The bisectors AD and CE of angles A and C of a polylateral triangle ABC intersect at point K. It is known that B = 56°. Calculate the magnitude of the angle AKC (in degrees). Provide solution and answer.
Answer:
Step-by-step explanation:
In a triangle, the angle bisectors divide the opposite sides in a ratio equal to the corresponding angle measures.
Let's call the length of AC as x and the length of AB as y. The angle AKC is equal to half the sum of the angles A and C.
The angle bisector theorem states that:
x/AK = y/KC.
So, x/AK = y/(180 - 56 - AK).
Solving for AK, we get:
AK = (x * (180 - 56)) / (x + y).
Since the angle AKC is equal to half the sum of the angles A and C, we can conclude that:
angle AKC = (angle A + angle C) / 2 = (x/AK + y/(180 - 56 - AK)) / 2.
Without any additional information about the triangle, it's not possible to calculate the exact value of angle AKC.
What is the area, in square units, of triangle $ABC$ in the figure shown if points $A$, $B$, $C$ and $D$ are coplanar, angle $D$ is a right angle, $AC = 13$, $AB = 15$ and $DC = 5$?
Answer:
The answer is 24.
Answer:
24
Step-by-step explanation:
Seeing that triangle ACD is a 5-12-13 right triangle, AD=12. Then using Pythagorean Theorem, we can calculate BD to be BD=\(\sqrt{15^2-12^2}=\sqrt{3^2(5^2-4^2)}=3\sqrt{25-16}=3\sqrt{9}=3 \cdot 3 = 9$\). Thus, the area of triangle ABD is \($\frac{1}{2} \cdot 12 \cdot 9=6 \cdot 9=54 \text{ sq units}$\) and the area of triangle ACD is \($\frac{1}{2} \cdot 12 \cdot 5=6 \cdot 5=30 \text{ sq units}$\). The area of triangle ABC is the difference between the two areas: \($54 \text{sq units} - 30 \text{sq units} = \boxed{24} \text{sq units}$.\)
Lines m and n are parallel. Line m is described by y=4x+2. Line n contains the point (1, -3). Which of the following is an equation for line n?
Lines m and n are parallel Line m is described by the equation y
A Oy-3 = 4(x + 1)
B. Oy-3=(x+1)
c. Oy+3 = 4(x - 1)
D.Oy+3 = 4(x - 1)
The equation of line m, in point-slope form is: y + 3 = 4(x - 1)
Recall:
The slopes of parallel lines are equal to each other.Slope-intercept form equation is: y = mx + b, where m is slope and b is y-intercept.Point-slope form equation is: \(y - y_1 = m(x - x_1)\) where, \((x_1, y_1)\) is a point and m is the slope.Equation of line m is y = 4x + 2
Slope of line m is 4
Since line m and line n are parallel, both lines will have the same slope. Therefore, the slope of line n is 4.
To write the equation for line if it contains the point (1, -3), substitute \((x_1, y_1)\) = (1, -3) and m = 4 into \(y - y_1 = m(x - x_1)\):
\(y - (-3) = 4(x - 1)\\\\\mathbf{y + 3 = 4(x - 1)}\)
Therefore, the equation of line n, in point-slope form is: y + 3 = 4(x - 1)
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Find a polynomial function of degree 3 such that f(0)=17 and the square root of f(x) are 0,5 and 8
Answer:
f(x)=x^3 - 13x^2 + 40x + 17
Step-by-step explanation:
x-0=0 x-5=0 x-8=0
x=0 x=5 x=8
y=x(x-5)(x-8)+b ==> b is what's going to be used to find the equation so that
y=17 when x=0
17=0(0-5)(0-8)+b ==> plugin 0 for x and 17 for y
17=0*(-5)*(-8)+b ==> simplify
17=0+b ==> anything multiplied by 0 is 0.
b=17
Hence, the equation is:
y=x(x-5)(x-8)+17 ==> expand this equation
y=x*(x-5)(x-8) + 17
y=x*(x(x - 8) - 5(x - 8)) + 17 ==> distribute x-8 to x and -5
y=x*(x*x - 8x - 5x - (8)(-5)) + 17 ==> distribution property
y=x*(x^2 - 13x - (-40)) + 17 ==> simplify
y=x*(x^2 - 13x + 40) + 17 ==> subtracting a negative number is equivalent to
adding a positive number
y=x^3 - 13x^2 + 40x + 17 ==> multiply x with x^2, 13x, and 40 using the
distribution property.
Answer: f(x)=x^3 - 13x^2 + 40x + 17
Answer: Okay, lets explain.
Step-by-step explanation:Since 0, 5 & 8 are given as the zeros of the required 3rd degree polynomial f(x), therefore, one may take it as ; f(x) =k (x-0)(x-5)(x-8)
= k(x³−13x²+40) …. .. .(1) . Since f(10) = 17 (given), it implies 17 = k(1000 -1300 + 400) = 100 ==> k = 17/100 = 0.17 . Put this value of k in eq(1) and get the required polynomial.
assume that the hourly cost to operate a commercial airplane follows the normal distribution with a mean of $3,403 per hour and a standard deviation of $398.what is the operating cost for the lowest 2% of the airplanes?
Answer:
$2,611.9.
Step-by-step explanation:
To find the operating cost for the lowest 2% of the airplanes, we need to find the corresponding z-score from the standard normal distribution using a z-table.
Using the formula:
z = (x - μ) / σ
where x is the cost we are interested in, μ is the mean cost, and σ is the standard deviation.
For the lowest 2% of airplanes, the z-score can be found by looking up the area to the left of z in the z-table. This area is 0.02.
Looking up 0.02 in the z-table gives a z-score of approximately -2.05.
So we have:
-2.05 = (x - 3403) / 398
Solving for x, we get:
x = -2.05 * 398 + 3403 = $2,611.9
Therefore, the operating cost for the lowest 2% of the airplanes is approximately $2,611.9.
⚠️⚠️GIVING BRAINLIST⚠️⚠️
GIVING BRAINLIST HELP!
Answer:
I agree with Helen because she is right that the volume is about 175 cubic inch. and it is a triangular prism.
Step-by-step explanation:
helen is swaggy so i must agree with her
what other reason is there not to agree?
In an arithmetic series, what is the sum of the first 22 terms if the first term is 12 and the common difference is 3?
Answer:
561
Step-by-step explanation:
an = dn - (a-d)
The difference is 3.
The first term is 12.
an = 3n - (12-3)
an = 3n - 9
Put n as 1, 2, 3, 4, 5 ....22.
3(1) - 9 = -6
3(2) - 9 = -3
3(3) - 9 = 0
3(4) - 9 = 3
3(5) - 9 = 6
...
3(22) - 9 = 57
Add the first 22 terms.
-6+-3+0+3+6+9+12+15+18+21+24+27+30+33+36+39+42+45+48+51+54+57
= 561
What is half of a 3/4 cup?
Answer:0.375
Step-by-step explanation:
3/4=0.75
0.75/2=0.375
(3/4)/2=0.375
Taylor has a $30 gift card that she can spend at the store. She has already bought a $9 picture frame, and she wants to buy $3 journals with the leftover money on the card. How many journals can she buy without going over the card's limit? What is the variable
Answer:
9
Step-by-step explanation:
total is 30
spent is $9
this is total money minus the amount of the picture frame
30-9
21 divide by 3
the total sum of journals bought was 9
Just need answer, that fills in the blanks, i dont need work shown ty
will give brainly!!
What is the solution to this equation?
2(5x + 8) = 6x + 20
O A. x= -9
O B. x= 9
O C. x = 1
O D. x= -1
SUBM
Answer:
x=1
Step-by-step explanation:
2(5x + 8) = 6x + 20
Divide each side by 2
2/2(5x + 8) = 6x/2 + 20/2
5x+8 = 3x+10
Subtract 3x from each side
5x-3x +8 = 3x-3x+10
2x+8 = 10
Subtract 8 from each side
2x+8-8=10-8
2x=2
Divide by 2
2x/2 = 2/2
x=1
What is the x-value in the solution to this system of linear equations?
2x − y = 11
x + 3y = −5
−3
−1
2
4
Answer:
4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightDistributive Property
Equality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityAlgebra I
Terms/CoefficientsSolving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
2x - y = 11
x + 3y = -5
Step 2: Rewrite Systems
2x - y = 11
[Subtraction Property of Equality] Subtract 2x on both sides: -y = 11 - 2x[Division Property of Equality] Divide -1 on both sides: y = 2x - 11Step 3: Redefine Systems
y = 2x - 11
x + 3y = -5
Step 2: Solve for x
Substitution
Substitute in y [2nd Equation]: x + 3(2x - 11) = -5[Distributive Property] Distribute 3: x + 6x - 33 = -5Combine like terms: 7x - 33 = -5[Addition Property of Equality] Add 33 on both sides: 7x = 28[Division Property of Equality] Divide 7 on both sides: x = 4Answer:
x = 4
Step-by-step explanation:
2x - y = 11
x + 3y = -5
To calculate the value of x , firstly we need to find value of y.
solve for y
2x - y = 11subtract 2x from both side
2x - 2x - y = 11 - 2x-y = 11 - 2xchange the sign of both side of equation
y = -11 + 2xrewrite
y = 2x - 11Solve for x
y = 2x - 11x + 3y = -5substitute the value of y in the equation
x + 3( 2x - 11 ) = -5distribute 3
x + 3 × 2x - 3× 11 = -5x + 6x - 33 = -5combine like terms
7x - 33 = -5Add 33 on both side
7x - 33 + 33 = -5 + 337x = 28divide both side by 7
7x / 7 = 28 / 7x = 4Ramon simplified this expression correctly. Here is what he wrote 12x+2-5. 12x-3 why didn't Ramon combine the 12x with the 2 or -5
Answer:
He didn't combine the 12 with the two or the -5 because it has a variable.
Step-by-step explanation:
There is an unknown to it, like how much it is multiplied by or something. Since the 2 and the -5 didn't have a variable attached to them, they could be combined with teach other, but not the 12.
Consider the set E = {0,20,2-1, 2-2,...} with the usual metric on R. = (a) Let (X,d) be any metric space, and (an) a sequence in X. Show that liman = a if and only if the function f: E + X given by an f(x):= x= 2-n x=0 is continuous. (b) Let X and Y be two metric spaces. Show that a function f : X+Y is continuous if and only if for every continuous function g: E+X, the composition fog: EY is also continuous
For a given metric space (X, d) and a sequence (an) in X, the limit of (an) is equal to a if and only if the function f: E → X defined by f(x) = 2^(-n) x=0 is continuous and a function f: X → Y is continuous if and only if for every continuous function g: E → X, the composition fog: E → Y is also continuous. These results provide insights into the relationships between limits, continuity, and compositions of functions in metric spaces.
(a)
To show that lim(an) = a if and only if the function f: E → X, defined by f(x) = 2^(-n) x=0, is continuous, we need to prove two implications.
1.
If lim(an) = a, then f is continuous:
Assume that lim(an) = a. We want to show that f is continuous. Let ε > 0 be given. We need to find a δ > 0 such that whenever d(x, 0) < δ, we have d(f(x), f(0)) < ε.
Since lim(an) = a, there exists an N such that for all n ≥ N, we have d(an, a) < ε. Consider δ = 2^(-N). Now, if d(x, 0) < δ, then x = 2^(-n) for some n ≥ N. Therefore, we have d(f(x), f(0)) = d(2^(-n), 0) = 2^(-n) < ε.
Thus, we have shown that if lim(an) = a, then f is continuous.
2.
If f is continuous, then lim(an) = a:
Assume that f is continuous. We want to show that lim(an) = a. Suppose, for contradiction, that lim(an) ≠ a. Then there exists ε > 0 such that for all N, there exists n ≥ N such that d(an, a) ≥ ε.
Consider the sequence bn = 2^(-n). Since bn → 0 as n → ∞, we have bn ∈ E and lim(bn) = 0. However, f(bn) = bn → a as n → ∞, contradicting the continuity of f.
Therefore, we conclude that if f is continuous, then lim(an) = a.
(b)
To show that a function f: X → Y is continuous if and only if for every continuous function g: E → X, the composition fog: E → Y is also continuous, we need to prove two implications.
1.
If f is continuous, then for every continuous function g: E → X, the composition fog is continuous:
Assume that f is continuous and let g: E → X be a continuous function. We want to show that the composition fog: E → Y is continuous.
Since g is continuous, for any ε > 0, there exists δ > 0 such that whenever dE(x, 0) < δ, we have dX(g(x), g(0)) < ε. Now, consider the function fog: E → Y. We have dY(fog(x), fog(0)) = dY(f(g(x)), f(g(0))) < ε.
Thus, we have shown that if f is continuous, then for every continuous function g: E → X, the composition fog is continuous.
2.
If for every continuous function g: E → X, the composition fog: E → Y is continuous, then f is continuous:
Assume that for every continuous function g: E → X, the composition fog: E → Y is continuous. We want to show that f is continuous.
Consider the identity function idX: X → X, which is continuous. By assumption, the composition f(idX): E → Y is continuous. But f(idX) = f, so f is continuous.
Therefore, we conclude that a function f: X → Y is continuous if and only if for every continuous function g: E → X, the composition fog: E → Y is also continuous.
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is the following graph a function true/false
Answer:
False
Step-by-step explanation:
At any X point, there should be only one Y point. So at X=1, function should intercept Y axis only at a single point, whereas this graph intercepts it two times. It is not a function, but it is a graph.
a baseball team has a tub. the tub has a width of 150 and a length of 150 plus the height of 80. What is the capacity of the tub in liters. pls show work
Answer:
1800 liters
Step-by-step explanation:
150*150*80=1800000 cubic cm
1800000/1000= 1800 liters
Might seem like a lot but really isn't.
Help me on this question please help this is due
Answer:
1.50 1.5
Step-by-step explanation:
beacuse its both of the wingspans together
Answer:
i think 1.5 inch
Step-by-step explanation:
0.75*2
this is because 1 wing is . 75 inch ACROSS so if two wings you will multiply it into two
Megan measures the height and arm spans of the girls on her basketball team. She plots the data and makes a scatterplot comparing heights and arm spans in inches. Megan finds that the trend line that best fits her results has the equation y = x +2. If a girl on her team is 64 inches tall, what should Megan expect her arm span to be.
A. Y = 64-2 = 62 inches
B. y = 64+2 = 66 inches
C. y = 64 inches
D. 64 = X +2
X = 62 inches
Answer:B
Step-by-step explanation:AP3X
The arm span of the girl of height 64 inches will be 66 inches based on the function thus option (B) is correct.
What is a function?A certain kind of relationship called a function binds inputs to essentially one output.
The machine will only accept specified inputs, described as the function's domain, and will potentially produce one output for each input.
As per the given function,
y = x + 2
Here y is the arm span and x is the height.
For height 64 inches x = 64
y = 64 + 2 = 66 inches
Hence "The arm span of the girl of height 64 inches will be 66 inches based on the function".
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List the multiples of 6 through 100
Help
I don’t understand
Answer:
d
Step-by-step explanation:
If you look up the definition on the internet it says causing great and irreparable harm or damage. so i believe its d causing a great amount of damage! ^.^ may i have brainliest?
A square patio has an area of 135 square feet.How ling is each side of the patio to the nearest tenth?
Answer:
\(\boxed {\tt 11.6 \ feet}\)
Step-by-step explanation:
The area of a square can be found using the following formula.
\(A=s^2\)
We know the area of the patio is 135 square feet. Substitute 135 ft² in for A.
\(135 \ ft^2=s^2\)
We want to find the side length. We must isolate the variable, \(s\). on one side of the equation.
s is being squared. The inverse of a square is a square root. Take the square root of both sides of the equation.
\(\sqrt{135 \ ft^2} =\sqrt{s^2}\)
\(\sqrt{135 \ ft^2} =s\)
\(11.61895 \ ft =s\)
Round to the nearest tenth. The 1 in the hundredth place tells us to leave the 6 in the tenth place.
\(11.6 \ ft \approx s\)
Each side of the patio is about 11.6 feet.
Can someone please help me on this, I don't understand :)
The values of x and y are 23.3 and 106 as per given diagram.
What is Alternate Interior Angles?
The word "alternate" refers to the transversal's "alternating sides." The "location" of these angles is expressly described by this designation.The alternate interior angles are equal in size when the lines are parallel.The sides of the transversal are "alternated" by alternate interior angles, which are "internal" (between the parallel lines). They are not neighbouring angles, as you can see (next to one another sharing a vertex).The alternate interior angles are equivalent when a transversal cuts two parallel lines.Hence, (3x + 4)° = 74°
3x = 74° - 4°°
x = 70° / 3
x = 23.3
What is Interior Angles on the Same Side of the Transversal?
The name of these angles describes their "location."The measures are supplemental when the lines are parallel.These angles are situated precisely where their names suggests. They are on the same side of the transversal and are "interior" (between the parallel lines).Hence, (3x+4)° + y° = 180°
74° + y° = 180°
y = 106°
Hence, the values of x and y are 23.3 and 106 as per given diagram.
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f(x0=2x-6 and g(x)=x-2x2 f(-1/2)
The value of the function is f(2) = -6, f(-1/2) = -1, g(-1) = -3 and g(3) = -15
Here the two functions are,
f(x) = 2x-6 and g(x) = x - 2x²
So we have to find
(i) f(2)
substitute the value of x in the function
f(2) = 2(2) - 6
= 4 - 6
= -2
(ii) f(-1/2)
f(-1/2) = 2(-1/2) - 6
=-1 -6
= -7
(iii) g(-1)
g(-1) = (-1) - 2(-1)²
= -1 - 2
= -3
(iv) g(3)
g(3) = 3 - 2(3)²
= 3 - 18
= -15
Therefore the value of f(2) = 6, f(-1/2) = -1, g(-1) = -3, g(3) = -15.
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The complete question is:
f(x0=2x-6 and g(x)=x-2x² . Find
(i) f(-1/2) (ii) f (-1/2) (iii) g (-1) (iv) g(3)
which of the following expression is NOT equivalent to -17 -(-5)?
A: 5+(-17)
B: -17-5
C:-17+5
D:-12
Answer:
The answer is B.
Reasoning:
-17 - (-5) = -12A. 5 + (-17) = -12✔
B. -17 - 5 = -22 ✖
C. -17 + 5 = -12 ✔
D. -12 ✔
Answer:
B: -17+5
Step- by- step explanation
Very easy 7th grade math please answer both questions 10 points!!!!
Answer:
28:
The Greatest Common Factor (GCF) of 10 and 35 is 5.
10/5 = 2
35/5 = 7
Take the GCF out and keep your divided values in the brackets:
5(2x+7)
29:
n = number of times Thalia has made cookies
c = cups of flour used
c = 12 - 2n
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