Answer: k= around -9.33
Step-by-step explanation:
-42-7k=14-k
Move the terms
-7k+k=14+42
collect the like terms
calculate the sum
-6k=56
divide both sides by -6
k=-28/3
alternative form
-9.33
Which algebraic expression is a polynomial?
Answer: The answer is B.
Step-by-step explanation: "Poly" means "many", and "nomial", in this case, meaning "term".
B is the only one with 3 or more different terms.
(negative number, whole number, two unknowns, and a square root)
The expression which is a polynomial is:
[tex]-6x^3+x^2-\sqrt{5}[/tex]
Step-by-step explanation:A polynomial expression is a expression of the form:
[tex]f(x)=a_nx^n+a_{n-1}x^{n-1}+........+a_1x+a_0[/tex]
where n belong to non-negative integers and [tex]a_i's[/tex] are real numbers.
1)
[tex]4x^2-3x+\dfrac{2}{x}[/tex]
This is not a polynomial because the third term:
[tex]\dfrac{2}{x}=2x^{-1}[/tex] has a negative poswer of x which violates the definition of polynomial.
2)
[tex]-6x^3+x^2-\sqrt{5}[/tex]
In this each of the term satisfy the definition of polynomial and hence the expression is a polynomial expression.
3)
[tex]8x^2+\sqrt{x}[/tex]
Here the second term is not a integer power and hence violate the definition of polynomial.
4)
[tex]-2x^4+\dfrac{3}{2x}[/tex]
which could also be written as:
[tex]-2x^4+\dfrac{3}{2}x^{-1}[/tex]
Here the second term contain a negative power of x and hence is not a polynomial.
What is the median of the following distribution? 24, 26, 26, 28, 29, 31, 33, 35, 37, 38, 40, 42, 43, 46, 48, 55, 56
Step-by-step explanation:
To find the median of a distribution, we first need to arrange the data in ascending order. Then, if the number of data points is odd, the median is the middle value. If the number of data points is even, the median is the average of the two middle values.
Given the distribution: 24, 26, 26, 28, 29, 31, 33, 35, 37, 38, 40, 42, 43, 46, 48
Arranging the data in ascending order: 24, 26, 26, 28, 29, 31, 33, 35, 37, 38, 40, 42, 43, 46, 48
There are 15 data points, which is an odd number. The middle value is the 8th value, which is 35.
Therefore, the median of the given distribution is:
OE. 35
For the next one, also put the answers because they will not always give you the correct answer since they do not know what it will be :/
The median of the given distribution is the ninth number in the ordered set, which is 37.
Explanation:To find the median of the given distribution, you will first need to order the data from smallest to largest, which has been done. The data set consists of 17 values, so the median will be the value in the middle position, which is the 9th value when the data is ordered. Since the data set is already in ascending order, you count nine values from the start, and the 9th value is the median.
The sequence of numbers is: 24, 26, 26, 28, 29, 31, 33, 35, 37, 38, 40, 42, 43, 46, 48, 55, 56.
The median of the distribution is 37, which is the value in the middle of the ordered set.
Acute △ABC with angles α, β, and γ is inscribed in a circle. Tangents to the circle at points A, B, and C intersect in points M, N, and P. Find measures of angles of the △MNP.
In an acute triangle ABC Inscribed angles in a circle with another triangle MNP formed by the intersections of tangents to the circle at points A, B, and C, the angles of triangle MNP are the sum of the opposite angles of triangle ABC. Therefore, ∠M = α + γ, ∠N = β + α, and ∠P = γ + β.
The question is about an acute triangle ABC inscribed in a circle and another triangle MNP formed by the intersections of tangents to the circle at points A, B, and C.
From the properties of circle and geometry, in such a scenario, the angles of triangle MNP correspond to sum of the opposite angles of triangle ABC.
The measures of angles in △MNP are as follows:
∠M = α + γ
∠N = β + α
∠P = γ + β
This relation comes from the fact that the exterior angle of a triangle is equal to the sum of the opposite interior angles.
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Pls pls help with number 4 I really need help with this
Answer:
your answer is 8 cups. to find the answer first make the fraction in to a improper fraction. that will give you 8/3 cups. then multiply by 3. that will give you 24/3. then simplify it. you will get 8
Step-by-step explanation:
solve the equation
-14+2b+= -2b+2
Answer:
b=4
Step-by-step explanation:
-14+2b= -2b+2
Add 2b to each side
-14+2b+2b= -2b+2b+2
-14+4b =2
Add 14 to each side
-14+4b+14= 14+2
4b = 16
Divide each side by 4
4b/4 = 16/4
b =4
Explain why a commercial that says "80% of dentists use this toothpaste" might be misleading?
Answer:
This may be misleading because it leaves room for doubt.
Step-by-step explanation:
If they're only saying that 80% use the toothpaste, that is saying that there is 20% who don't like it.
Final answer:
A commercial claiming "80% of dentists use this toothpaste" may be misleading due to lack of context, potential selection bias, and vagueness surrounding the term 'use.' Historical instances, like deceptive advertising by Colgate-Palmolive in the 1950s, alert consumers to be cautious of such claims.
Explanation:
A commercial claiming that "80% of dentists use this toothpaste" might be misleading because it does not provide a full context. Without additional information, such a statement can create false impressions. For instance, the sample size could be too small or not representative of the general population of dentists. The selection criteria for the dentists might be biased towards those who prefer the product or are somehow affiliated with the toothpaste's manufacturer. Furthermore, the term "use" is vague and could simply mean the dentists have tried the product rather than regularly using it. It is also important to question whether dentists recommend the toothpaste to their patients or if their usage is based on personal preference only.
As history has shown with the deceptive advertising practices of the 1950s, like those of Colgate-Palmolive with their Rapid Shave product, companies have sometimes engaged in advertising that misrepresented the effectiveness of their products. Therefore, it's essential for consumers to be wary of such claims and seek more information before making a purchase decision based on such endorsements.
What is 4 + 4?
Right answer gets brainiest!
(Free points because I hit 111 questions answered, I'll maybe do one when I get 123 questions answered!)
Answer:
8
Step-by-step explanation:
The answer is 8 but maybe it is 21
Plz help me i need it
Answer: [tex]\bold{b)\quad y=\dfrac{log_4-9}{2}}[/tex]
Step-by-step explanation:
Inverse is when you swap the x's and y's and solve for y.
[tex]y=4^{2x+9}\\\\\text{Swap the x's and y's:}\\x=4^{2y+9}\\\\\text{Apply }log_4\text{ to both sides:}\\log_4x=log_44^{2y+9}\\\\log_44\text{ cancels out:}\\log_4x=2y+9\\\\\text{Subtract 9 from both sides:}\\log_4x-9=2y\\\\\text{Divide both sides by 2:}\\\dfrac{log_4x-9}{2}=y[/tex]
A graduated cylinder that is 24cm tall can hold 1L of water. What is the radius of the cylinder? What is the height of the 500 ml mark? The 250 ml mark? Recall that 1 liter is equal to 1000 millimeters
Answer:
Part A) The radius of the cylinder is [tex]r=\sqrt{\frac{125}{3\pi}}\ cm[/tex]
Part B) The height of the 500 ml mark is [tex]12\ cm[/tex]
Part C) The height of the 250 ml mark is [tex]6\ cm[/tex]
Step-by-step explanation:
Part A) What is the radius of the cylinder?
we know that
The volume of a cylinder is equal to
[tex]V=\pi r^{2} h[/tex]
we have
[tex]V=1\ l=1,000\ ml=1,000\ cm^{3}[/tex]
[tex]h=24\ cm[/tex]
substitute and solve for r
[tex]1,000=\pi r^{2} (24)[/tex]
[tex]r^{2}=\frac{1,000}{24\pi}[/tex]
[tex]r=\sqrt{\frac{1,000}{24\pi}}\ cm[/tex]
simplify
[tex]r=\sqrt{\frac{125}{3\pi}}\ cm[/tex]
Part B) What is the height of the 500 ml mark?
using proportion
[tex]\frac{24}{1,000}\frac{cm}{ml}=\frac{x}{500}\frac{cm}{ml}\\ \\x=500*24/1,000\\\\x=12\ cm[/tex]
Part C) What is the height of the 250 ml mark?
using proportion
[tex]\frac{24}{1,000}\frac{cm}{ml}=\frac{x}{250}\frac{cm}{ml}\\ \\x=250*24/1,000\\\\x=6\ cm[/tex]
Final answer:
Explanation of finding cylinder radius, heights at 500ml and 250ml marks in a graduated cylinder.
Explanation:
A liter is equal to 1000 milliliters (mL) or cubic centimeters (cm³).
To find the radius of the cylinder:
Use the formula for the volume of a cylinder: V = πr²h
Substitute the known volume (1000 mL or cm³) and height (24 cm) to find the radius.
Height at the 500ml mark: Half the height of the cylinder, so 12 cm. Height at the 250ml mark: One-fourth the height of the cylinder, so 6 cm.
PLEASE HELP ME WITH THIS QUESTION
what is the equation of a line that joins the point of intersection of 5x-2y+3=0 and 4x-3y+1=0 to the point of intersection of x=y and x=3y+4?
Answer: y = x
Step-by-step explanation:
First, find the point where 5x - 2y + 3 and 4x - 3y + 1 intersect using the Elimination Method.
5x - 2y + 3 = 0 → 3(5x - 2y + 3 = 0) → 15x - 6y + 9 = 0
4x - 3y + 1 = 0 → -2(4x - 3y + 1 = 0) → -8x + 6y - 2 = 0
7x + 7 = 0
7x = -7
x = -1
5x - 2y + 3 = 0
5(-1) - 2y + 3 = 0
-5 - 2y + 3 = 0
-2y - 2 = 0
-2y = 2
y = -1
(-1, -1)
Next, find the point where x = y and x = 3y + 4 intersect using the Substitution Method.
x = y
x = 3y + 4 → y = 3y + 4
-2y = 4
y = -2
x = y
x = -2
(-2, -2)
Now, find the line that passes through (-1, -1) and (-2, -2) using the Point-Slope formula. (x₁, y₁) = (-1, -1) and m = 1
y - y₁ = m(x - x₁)
y + 1 = 1(x + 1)
y = x
aproxímate the value of square root of 5 to the nearest hundredth
Answer:
2.24
Step-by-step explanation:
5 is not a perfect square and therefore its square root is not an integer.
it is a decimal which can partly be presented as 2.236068. the digits after the decimal point occupy the following decimal spaces
2-tenths
3-hundredths
6-thousandths.
If the digit in the thousandths position is 5 or greater then we add one to the digit in the hundredths position to get the nearest hundredth while if it is less than 5 we truncate at the hundredth position and retain the digit at this position as the nearest hundredth.
in this question, the digit in the thousandth position is 6 thus we add 1 to the digit in the hundredth position that is,3 to get 4
therefore the square root of 5 to the nearest hundredth is 2.24
which graph contains the points of intersections satisfying this linear-quadratic system of equations? x^2+y^2=20 x-y+2=0
Answer: There are two points of intersection (2, 4) and (-4, -2)
Step-by-step explanation:
x - y + 2 = 0 → x = y - 2
Use Substitution Method:
x² + y² = 20
(y - 2)² + y² = 20 replaced x with (y - 2)
y² - 4y + 4 + y² = 20 expanded (y - 2)²
2y² - 4y + 4 = 20 added like terms
2y² - 4y - 16 = 0 subtracted 20 from both sides
y² - 2y - 8 = 0 divided both sides by 2
(y - 4)(y + 2) = 0 factored
y - 4 = 0 and y + 2 = 0 applied Zero Product Property
y = 4 and y = -2
Input the y-values into x = y - 2 to solve for x.
y = 4; x = 4 - 2 y = -2; x = -2 - 2
x = 2 x = -4
(2, 4) (-4, -2)
If f (x)=x2and g(x)=x+6find g(f(0))
Answer:
g(f(0)) = 6
Step-by-step explanation:
Evaluate f(0 ) and substitute this value into g(x)
f(0) = 0² = 0 and
g(0) = 0 + 6 = 6
⇒ g(f(0)) = 6
The value of g(f(0)) is 6.
Definition of g(f(x)) -If two functions f(x), g(x) are present , then (f o g) of x is also known as a composite function and it is mathematically denoted as f(g(x)) or (f ∘ g)(x). It means that x = g(x) should be substituted in f(x). It is an operation that combines two functions to form another new function.
How to find the value of g(f(0)) as given in the question ?Given , f(x) = [tex]x^{2}[/tex] and g(x) = x + 6
We have to find g(f(0)).
To get the value of this composite function g(f(x)), we first have to find the value of f(x) at the given value x = 0 and then substitute the value of f(x) into g(x).
⇒ f(0) = 0.
∴ g(f(0)) = g(0) = 0 + 6 = 6.
Therefore we have the value of g(f(0)) as 6.
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the pair of variables x=5, y=7 is the solution to the equation ax–2y=1. Find the coefficient a.
Answer:
a=3
Step-by-step explanation:
This should be very simple, just substitute xy and y for 5 and 7 respectively, so 5a-2*7=1, or 5a-14=1, or 5a=15, if we divide both sides by 5, we get a=3
Answer:
A=3 5a-14=1
Step-by-step explanation:
Add 14 to both sides then divide 5 and 15 to get 3
a square measuring 9 inches by 9 inches is cut from the corners of a square measuring 15 inches by 15 inches what is the area of the L shaped figur that is formed
The area of the L-shaped figure formed is 225 square inches.
To find the area of the L-shaped figure formed after cutting corners, start by calculating the area of the square from which the corners were removed.
The larger square has sides of length 15 inches, so its area is 15 x 15 = 225
When you cut corners of 9 inches by 9 inches from each corner of the larger square, you effectively create a smaller square. Since each side of the smaller square is 9 inches shorter than the larger square, its side length is -
15 - 2 x 9
= - 3
However, a negative side length is not possible, so we adjust it to zero. This implies that there's no square left after cutting off such large corners.
The area of the L-shaped figure is the difference between the area of the larger square and the area of the smaller square:
Area of L-shaped figure=Area of larger square−Area of smaller square
= 225 - 0
= 225
Thus, the area of the L-shaped figure formed is 225 square inches.
Solve for this problem for N
Answer:
N = 3
Step-by-step explanation:
I don't know what the whole thing above is, but just disregard that.
All it is here is cross multiplication.
So 28N = 21 * 4
Multiply...
28N = 84
And divide each side by 28
N = 3
Find the measures of the interior angles of the triangle
Answer:
A = 75°
B = 90°
C = 15°
Step-by-step explanation:
The diagram tells us that C = 15°.
The diagram places a square in the angle of B, showing you the angle is a 90° right angle.
You can solve for A because all angles of a triangle must equal 180°. 180° - 90° (B) = 90°. 90° - 15° (C) = 75°, the measure of A.
When you multiply a number by 10,100,1,000 and so forth do you move the decimal point to the left or to the right as many places as there are zero in the multiplier
Answer:
right
Step-by-step explanation:
You would move it towards the right because that adds a place value while moving it to the left takes away a place value.
When you multiply a number by powers of 10, the decimal point moves to the right as many places as there are zeros in the multiplier. For example, multiplying 1.2 by 10 gives 12, because the decimal point moves one place to the right.
Explanation:In mathematics, when you multiply a number by 10, 100, 1,000, and so forth (powers of 10), you move the decimal point to the right as many places as there are zeros in the multiplier. This is because you are increasing the value of the number by a factor of 10 for each move to the right.
For instance, if you multiply 1.2 by 10, the result is 12. The decimal point has moved one place to the right because there is one zero in 10. If you multiply 1.2 by 1,000, the result is 1,200. The decimal point has moved three places to the right because there are three zeros in 1,000.
This understanding makes it easier to handle multiplication of numbers by powers of 10. But remember, this only applies when multiplying. When dividing, the decimal point moves to the left.
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The ball is shaped like a hemisphere with a radius of 5 inches. Find the volume of the bowl
The volume of a hemisphere with a radius of 5 inches is calculated by first determining the volume of a full sphere using the formula V = (4/3)πr³, and then dividing that by 2. The final volume of the hemisphere is 261.7994 cubic inches.
Explanation:Volume of a Hemisphere
The question involves finding the volume of a hemisphere, which is half of a sphere, with a given radius of 5 inches. First, we would calculate the volume of a full sphere using the formula V = (4/3)πr³, and then divide that by 2 to get the hemisphere volume. Therefore, for a sphere with a radius of 5 inches:
Volume of the sphere, V = (4/3)π × 5³.
Volume of the hemisphere = V/2.
After performing the calculations:
Volume of the sphere, V = (4/3)π × 125 = 523.5988 cubic inches.
Volume of the hemisphere = 261.7994 cubic inches.
Dana colored 1/6 of her picture,and Brendan colored 1/4 of his picture.Who Coloed more?
Answer:
Brenden colored more.
Explanation:
1
6
,
1
4
=
4
1
24
6
,
6
1
24
4
∴
1
4
>
1
6
Wouldn’t it be 1/25 because you just multiply
Is the point (5,-1) a solution of y=2x-11
if the given point satisfies this equation then it would be its solution
(-1)=2(5)-11
-1=10-1
-1=-1
lHS=RHS
Hence (/,-1) is the solution of y=2x-11
Which number line shows the solution set for |d| > 3?
Answer:
Last option
[tex]d>3[/tex] or [tex]d<-3[/tex]
Step-by-step explanation:
The absolute value is a function that transforms any value x into a positive number.
Therefore, for the function [tex]f(x) = |x|[/tex] x> 0 for all real numbers.
Then the inequation:
[tex]|d|> 3[/tex] has two cases
[tex](d)[/tex] if [tex]d>0[/tex] (i)
[tex]-(d)[/tex] if [tex]d< 0[/tex] (ii)
We solve the case (i)
[tex]d> 3[/tex]
We solve the case (ii)
[tex]-d>3\\d < -3[/tex]
Then the solution is:
[tex]d>3[/tex] or [tex]d<-3[/tex]
Answer:
Last choice is the correct graph.
Step-by-step explanation:
We have been given inequality [tex]|d|>3[/tex]. Now we need to find out which of the given number lines shows the correct solution set for [tex]|d|>3[/tex].
We know that [tex]|x|>a[/tex] can be broken into :
[tex]x>+a[/tex] or [tex]x<-a[/tex]
Same way we can break [tex]|d|>3[/tex] into two parts as:
[tex]d>+3[/tex] or [tex]d<-3[/tex]
Since it has only < symbol but not equal so we make an open circle at both +3 and -3.
Hence last choice is the correct graph.
Which represents the solution(s) of the graphed system of equations, y = x2 + x – 2 and y = 2x – 2? (–2, 0) and (0, 1) (0, –2) and (1, 0) (–2, 0) and (1, 0) (0, –2) and (0, 1) Mark this and return
ANSWER
[tex](0,-2), (1,0)[/tex]
EXPLANATION
The first equation is
[tex]y = {x}^{2} + x - 2[/tex]
The second equation is
[tex]y = 2x - 2[/tex]
We equate both equations to get,
[tex] {x}^{2} + x - 2 = 2x - 2[/tex]
[tex] {x}^{2} + x - 2x - 2 + 2 = 0[/tex]
Simplify
[tex] {x}^{2} - x = 0[/tex]
Factor
[tex]x(x - 1) = 0[/tex]
Either
[tex]x = 0[/tex]
Or
[tex]x - 1 = 0[/tex]
[tex]x = 1[/tex]
Put x=0 or x=1 into the second equation to get,
[tex]y = 2(0) - 2 = - 2[/tex]
Or
[tex]y = 2(1) - 2 = 0[/tex]
Therefore the solutions are;
[tex](0,-2), (1,0)[/tex]
Answer:
(0, -2) (1, 0)Step-by-step explanation:
I got it right on the test... Have a great day :)
PLEASE HELP I NEED THE ANSWER BY TODAY! thanks :)
Answer:
[tex]\large\boxed{C.\ \dfrac{7}{2}}[/tex]
[tex]\large\boxed{B.\ \$3,600}[/tex]
Step-by-step explanation:
[tex]orange\ area-35\%\\\\light\ blue\ area-10\%\\\\the\ ratio:\ \dfrac{35}{10}=\dfrac{35:5}{10:5}=\dfrac{7}{2}[/tex]
[tex]Food-18\%\ of\ \$20,000.\\\\p\%=\dfrac{p}{100}\to18\%=\dfrac{18}{100}=0.18\\\\18\%\ of\ \$20,000\to0.18\cdot\$20,000=\$3,600[/tex]
√x+3=5
[tex] \sqrt{x} + 3 = 5[/tex]
Answer:
Let's solve your equation step-by-step.
√x+3=5
Step 1: Add -3 to both sides.
√x+3+−3=5+−3
√x=2
Step 2: Solve Square Root.
√x=2
x=22(Square both sides)
x=4
Check answers. (Plug them in to make sure they work.)
x=4(Works in original equation)
Answer:
x=4
Ms Gordon uses the following recipe for marshmallow treats. She decides to use 2\3 of the recipe.
: 2 cups melted butter
: 24 cups of mashmallows
: 13 cups of cereal
how much of each ingredient will she need?
Final answer:
Ms. Gordon will need 1 1/3 cups of melted butter, 16 cups of marshmallows, and 8 2/3 cups of cereal.
Explanation:
To find how much of each ingredient Ms. Gordon needs, we need to use the information provided in the recipe and the fact that she is only using 2/3 of the recipe.
For each ingredient, multiply the original amount by 2/3.
So, Ms. Gordon will need:
1 1/3 cups of melted butter (2/3 of 2 cups)16 cups of marshmallows (2/3 of 24 cups)8 2/3 cups of cereal (2/3 of 13 cups)An umbrella is in the shape of a regular octagon as shown. The umbrella is separated into sections, as shown by the dashed lines that intersect in the center of the octogon. What is the value of x?
A: 22.5 degrees
B: 37.5 degrees
C: 45 degrees
D: 50 degrees
Answer:
C. 45 degrees.
Step-by-step explanation:
The degree of the entire circle is 360 degrees, and the circle is divided into 8 equal sections, therefore x = 360/8 = 45 degrees.
The central angle of a regular octagon is computed by dividing the total degrees in the circle (360 degrees) by the number of sides in the octagon (8). Hence, the value of 'x' is 45 degrees.
Explanation:The question is asking for the measure of 'x', which represents the angle in the center of the octagonal umbrella. To solve this, we need to remember that the total degrees in a circle (or in this case, an octagon) is 360 degrees. As a regular octagon consists of 8 equal angles, we simply divide 360 by 8 to find the measure of each angle. Therefore, 'x' equals to 45 degrees. This corresponds to option C.
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EASY! WILL MARK BRAINEST! Find the slope of the line in the image below!
Answer: The slope is 1
Step-by-step explanation: Rise(how many time u go up) -over- Run (how many times u go over)
Answer:
The slope is -1.16 with 6 repeating If rounded to nearest whole number Will simply be -1
Step-by-step explanation:
m = Y2-Y1/X2-X1 is what you use to find the slope
1) Identify the points
(-4,4) and (2,-3) are the points
2) plug it into the formula for slope
-3 - 4 = -7 for the Y value
2 - (-4) = 6 For the X value 2 Multiplying 2 negative sign give you a positive.
3) Divide
-7/6 = -1.16 with 6 repeating Rounded to the nearest whole number is -1
Hopes this help!
how many faces does a pyramid with a square base have?
A. 7
B. 5
C. 6
D. 8
Answer:
B. 5
Step-by-step explanation:
Each edge of the base has one triangular face attached to it (which then come together). Since it is a square base, this gives you 4 faces, and the base itself makes 5 faces.
In a spelling bee, the winner and three other competitors each spelled 18 words correctly. About how many total words did these students spell correctly?
Answer:72.
Step-by-step explanation:
There are three competitrs, one winner, four people in all. multiply four by 18,and you have seventy two
Answer:
72
Step-by-step explanation: