Answer:
6x=46.50
Step-by-step explanation:
SOMEONE PLEASE HELP WILL MArk BRAINLIEST ‼️‼️
Answer:
y=3x+2
Step-by-step explanation:
Find the average rate of change of y=0.5x-3 over the interval -3(equal to or <)x(equal to or <)4
The value of average rate of change of y = 0.5x - 3 over the interval
- 3 ≤ x ≤ 4 is, 0.5.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
The function is,
⇒ y = 0.5x - 3
Now, The average rate of change is,
⇒ y = 0.5x - 3
⇒ dy / dx = 0.5
Hence, The value of average rate of change of y = 0.5x - 3 over the interval - 3 ≤ x ≤ 4 is, 0.5.
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find the quotient and remainder when 6x^4+ 11x^3+13x^2 -3x+27 is divided by 3x+4. also check the remainder obtained by using the remainder theorem.
The division of 6x⁴ + 11x³ + 13x² - 3x + 27 by 3x + 4 will have a quotient of 2x³ + x² +3x -5 and a remainder of 47 using the remainder theorem.
What is the remainder theoremThe remainder theorem states that if a polynomial say f(x) is divided by x - a, then the remainder is f(a).
We shall divide the 6x⁴ + 11x³ + 13x² - 3x + 27 by 3x + 4 as follows;
x⁴ divided by 3x equals 2x³
3x + 4 multiplied by 2x³ equals 6x⁴ + 8x³
subtract 6x⁴ + 8x³ from 6x⁴ + 11x³ + 13x² - 3x + 27 will give us 3x³ + 13x² - 3x + 27
3x³ divided by 3x equals x²
3x + 4 multiplied by x² equals 3x³ + 4x²
subtract 3x³ + 4x² from 3x³ + 13x² - 3x + 27 will give us 9x² - 3x + 27
9x² divided by 3x equals 3x
3x + 4 multiplied by 3x equals 9x² + 12x
subtract 9x² + 12x from 9x² - 3x + 27 will give us -15x + 27
-15x divided by 3x equals -5
3x + 4 multiplied by -5 equals -15x - 20
subtract -15x - 20 from -15x + 27 will result to a remainder of 47
using the remainder theorem, x = -4/3 from the the divisor 3x + 4
thus:
f(-4/3) = 6(-4/3)⁴ + 11(-4/3)³ + 13(-4/3)² - 3(-4/3) + 27 {putting the value -4/3 for x}
f(-4/3) = (1536/81) - (704/27) + (208/9) + (12/3) + 27
f(-4/3) = (1536 - 2112 + 1872 + 324 + 2157)/81 {simplification by taking the LCM of the denominators}
f(-4/3) = (5919 - 2112)/81
f(-4/3) = 3807/81
f(-4/3) = 47
Therefore, the quotient of after the division of 6x⁴ + 11x³ + 13x² - 3x + 27 by 3x + 4 is 2x³ + x² +3x -5 and there is the remainder of 47 using the remainder theorem.
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PLEASE HELP IM SERIOUSLY STUCK
Formula for the Slope: (y2 - y1) / (x2 - x1)
You can use any two points to find the slope, as long as those two points are on the line.
Point 1 = (-2, 8)
Point 2 = (0, 0)
Slope = (0 - 8) / (0 - - 2)
Slope = -8 / 2
Slope = -4
Hope this helps!
Answer:
-4
Step-by-step explanation:
The formula to find the slope is (change in y)/(change in x). In other words, rise over run.
If we look at the data, we can see that the x and y value changes.
x value: -3 --> -2 --> -1 --> 0 --> 1
y value: 12 --> 8 --> 4 --> 0 --> -4
When y changed from 12 to 8, the x changed from -3 to -2.
y: 12 --> 8
x: -3 --> -2
There was a difference of -4 in the y and a difference of 1 in the x.
At the top, I wrote that the slope was (change in y)/(change in x)
With -4 and 1 we found, we can say that the slope is -4/1.
If we simplify this answer, we end up with -4.
So -4 is the slope of the data.
Jackie runs and rides her bike. She runs 6 miles an hour. She bikes 18 miles an hour. Last week she ran and bikes a total of 216 miles. It took her 16 hours. How many hours did Jackie run and bike last week. Show your work
Answer: she bikes for 10 hours and runs for 6
Step-by-step explanation: suppose that x equals the amount of hours she runs and y equals the amount of hours she bikes.
6x+ 18y=216
x+y=16
(This is your system of equations)
(Starting with the second equation, x+y=16)
y=-x +16 (move x to the other side by transposition)
Now that you have something that equals Y you plug it in to the other equation:
6x+18(-x+16)=216
(Start solving)
6x-18x+288=216 (used distributive property)
-12x+288=216 (Combine like terms)
-12x=-72 (use transposition again)
x=6 (divide to get x by itself)
Now you plug in the value of x into your equation for the value of “y”, y=-x+16,
Y=-6+16 (plugged in the value of x)
Y=10 (solved the equation -6+16)
Suppose AB has length of 6 units and the coordinates of A are (-2,5) Give coordinates for three possible locations for B and the midpoint of each of those possible segments #7 help
Remember that
the distance between two points is equal to
\(d=\sqrt[\square]{(y2-y1)^2+(x2-x1)^2}\)In this problem we have
d=6 units
A(-2,5)
B(x,y)
substitute the given values in the expression above
\(6=\sqrt[\square]{(y-5)^2+(x+2)^2}\)squared both sides
\(36=(y-5)^2_{}+(x+2)^2\)Find out three possible coordinates of point B
First and Second possibles coordinate
I will assume the x-coordinate
For x=-2
substitute in the expression above and solve for y
36=(y-5)^2
square root both sides
\(\begin{gathered} y-5=\pm6 \\ y=\pm6+5 \end{gathered}\)Values of y are
y=11 and y=-1
therefore
we have the coordinates of point B
(-2,11) and (-2,-1)
Find out the third possible coordinate of point B
I will assume the y-coordinate
For y=5
36=(x+2)^2
square root both sides
\(\begin{gathered} x+2=\pm6 \\ x=\pm6-2 \end{gathered}\)the values of x are
x=4 and x=-8
the possibles values of B are
(4,5) and (-8,5)
therefore
Possibles values of point B are(-2,11)
(-2,-1)
(4,5)
(-8,5)
Part 2
Find out the midpoint of each of those possible segments
The formula to calculate the midpoint between two points is equal to
\(M(\frac{x1+x2}{2},\frac{y1+y2}{2})\)so
For A(-2,5) and B(-2,11)
substitute in the formula-------> M(-2,8)
For A(-2,5) and B(-2,-1) ------> M(-2,2)
For A(-2,5) and B(4,5) -------> M(1,5)
For A(-2,5) and B(-8,5) -----> M(-5,5)
2b^2-7=4b
I need help solving this
Answer:
\(b=\dfrac{2\pm3\sqrt{2}}{2}\)
Step-by-step explanation:
Rearrange so the equation is in the general form of a quadratic equation \(ax^2+bx+c=0\)
\(\implies 2b^2-4b-7=0\)
Replace b with x (we will change this back at the end, but this is to avoid confusion when using the quadratic formula):
\(\implies 2x^2-4x-7=0\)
Therefore, comparing the equation with \(ax^2+bx+c=0\)
a = 2b = -4c = -7Use the quadratic formula to solve, inputting the above values:
\(x=\dfrac{-b\pm\sqrt{b^2-4ac} }{2a}\)
\(\implies x=\dfrac{-(-4)\pm\sqrt{(-4)^2-4(2)(-7)} }{2(2)}\)
\(\implies x=\dfrac{4\pm\sqrt{72}}{4}\)
\(\implies x=\dfrac{4\pm6\sqrt{2}}{4}\)
\(\implies x=\dfrac{2\pm3\sqrt{2}}{2}\)
Finally, change x back to b:
\(b=\dfrac{2\pm3\sqrt{2}}{2}\)
cual es la fraccion intermedia de 2\4 y 3\4
Answer:
10t-2b-2
Step-by-step explanation:
5+2-2123
How large must be a test statistic to reject the null hypothesis in favor of alternative hypothesis?
To determine how large a test statistic must be to reject the null hypothesis in favor of the alternative hypothesis, we need to first establish a hypothesis test. A hypothesis test is a statistical procedure that helps us determine if there is enough evidence to support a particular hypothesis.
In a hypothesis test, we start with a null hypothesis (H0) which is a statement that there is no significant difference between two groups or variables. The alternative hypothesis (Ha) is the statement that there is a significant difference between the two groups or variables.
Once we have established our null and alternative hypotheses, we need to conduct a statistical test to determine if there is enough evidence to reject the null hypothesis in favor of the alternative hypothesis. The test statistic is the numerical value that we obtain from our statistical test, which we compare to a critical value to determine if we can reject the null hypothesis.
The critical value is determined by the level of significance (α) we have chosen for our test, which is the probability of making a type I error (rejecting the null hypothesis when it is actually true). Typically, the level of significance is set at 0.05 or 0.01.
So, to answer the question, how large a test statistic must be to reject the null hypothesis in favor of the alternative hypothesis depends on the level of significance we have chosen, as well as the degrees of freedom and distribution of the test statistic. The critical value for a given level of significance and degrees of freedom can be found in statistical tables or calculated using software. If the test statistic is larger than the critical value, we can reject the null hypothesis in favor of the alternative hypothesis.
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help What is the area, in square centimeters, of the trapezoid below?
Answer:
115.15 cm²
Step-by-step explanation:
The area of a trapezoid = 1/2 (b1 + b2)h
Where:
b1 = first base = 8.2 cm
b2 = Second base = 15.3 cm
h = height = 9.8 cm
Hence, Area of the trapezoid =
1/2 (8.2 + 15.3) × 9.8
= 1/2 × (23.5) × 9.8
= 115.15 cm²
Therefore, the area, in square centimeters, of the trapezoid below is 115.15 cm²
Hunter receives $20 per week, plus an additional $10 for each lawn he mows. Which graph represents Hunter's earnings?
Answer:
C
Step-by-step explanation:
Answer:
answer 1
Step-by-step explanation:
because hunter already receives $20 a week the graph must start at 20 and since hunter can mow a law for 10 if he mows 2 laws with the additional $20 from the start of the week his earnings would be $40. The only graph that represents that is graph 1
A cone-shaped paper drinking cup is to be made to hold 36 cm3 of water. Find the height and radius of the cup (in cm) that will use the smallest amount of paper. (Round your answers to two decimal places.) height cm radius cm
The height and radius of the cup are 4.41 cm and 2.07 cm respectively
To minimize the amount of paper used, we need to minimize the surface area of the cup. Let h be the height and r be the radius of the cone. Then we have:
\(Volume of cone = \frac{1}{3} πr^{2} h = 36 cm^{3}\)
Solving for h, we get:
\(h = \frac{108}{(πr^2)}\)
Now we can express the surface area of the cone as:
\(Surface area = πr^2+ πr\sqrt{r^{2}+h^{2} }\)
Substituting the expression for h, we get:
\(Surface area = πr^2+πr \sqrt{(r^{2} +(\frac{108}{(πr^2)^{2}) } )}\)
To minimize this function, we take its derivative with respect to r and set it equal to zero:
\(\frac{d}{dx} (Surface area) = \frac{2πr - 108r }{[(r^2+(\frac{108}{πr^2}))^{0.5} }] - \frac{108π}{r^2 } = 0\)
Simplifying, we get:
\(2r^3 - \frac{108^2}{π} = 0\)
Solving for r, we get:
\(r = (\frac{54}{π})^{\frac{1}{3} }\)
Substituting this value into the expression for h, we get:
\(h = \frac{108}{\frac{54}{π} ^{(\frac{2}{3}π )} }\)
Thus, the height and radius of the cup that will use the smallest amount of paper are:
height = 4.41 cm
radius = 2.07 cm (rounded to two decimal places)
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i really dont understand this question, help? i dont need steps or anything
Answer:
Step-by-step explanation:
135 degrees is an exterior angle. meaning the interior angle is 45. meaning x is 45 because of the isosceles triangle theorem that states if two sides are equal on a triangle then their angles opposite those are congruent. a triangle measures up to 180 in general. so 45 plus 45 is 90. 180 minus 90 is 90. so angle x is 45 and angle y is 90
What is 3 + 2 HELP then after add 3456 then subtract 45 and then divid 20
The simplify value of numeric expression, 3 + 2, after adding 3456 then subtracting 45 and then dividing by 20 is equals the 17.8.
We have an expression of numbers, 3 + 2 we have to apply some arithematic operations on it and determine the final simplfy value. Let the expression be x = 3 + 2, add 3456 in it
=> x = 3 + 2 + 3456
Substracts 45 from above expression
=> x = 3 + 2 + 3456 - 45
Dividing the above expression of x by 20
=>
\(\frac{ x } {20} = \frac{ 3 + 2 + 3456 - 45}{20}\)
\(= \frac{3416}{20}\)
= 17.8
Hence, required simplify value is 17.8.
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what is the correct answer
Answer:
below
sin30 = x/8
x = 8 *sin30
x = 4
option A is Correct
a card is drawn at random from a standard deck. that card is not put back in the deck, and a second card is drawn at random from the remaining cards in the deck. what is the probability that both of the cards are nines? do not round your intermediate computations. round your final answer to four decimal places.
Chance that the first card is a 9: 4/52 or 1/13
Chance that the second card is a 9: 3/52
Total probability is 1/13 • 3/52 ≈ 0.00443786982249
0.004438 or 0.4438%
Help Please!!!!!!!!!!
Answer:
27°
Step-by-step explanation:
x + 72 and 3x are co-interior angles which means they sum to 180°. We can write this as:
x + 72 + 3x = 180 - now we can simplify:
4x + 72 = 180 - simplify further by subtracting 72 from both sides:
4x = 180 - 72 → 4x = 108 → x = 108 ÷ 4 = 27°
Hope this helps!
Co interior angles are supplementary
\(\\ \sf\longmapsto x+72+3x=180\)
\(\\ \sf\longmapsto 4x+72=180\)
\(\\ \sf\longmapsto 4x=180-72\)
\(\\ \sf\longmapsto 4x=108\)
\(\\ \sf\longmapsto x=\dfrac{108}{4}\)
\(\\ \sf\longmapsto x=27\)
Classify the triangle by its sides and angles.
Question 16 options:
A)
Acute scalene triangle
B)
Right scalene triangle
C)
Obtuse isosceles triangle
D)
Obtuse scalene triangle
Answer:
a: acute scalene triangle
Answer:
Step-by-step explanation:
D
Bill went to the store to purchase new clothes for the upcoming school year. Bill purchased 8 shirts, 4 pairs of shorts, and 2 pairs of pants. If a single outfit consists of one shirt and either one pair of shorts or one pair of pants, how many outfits can Bill create with the clothes he purchased
Answer:
Hence 48 outfits can Bill create with the clothes he purchased.
Step-by-step explanation:
Now the given are,
8 shirts,
4 pairs of shorts,
2 pairs of pants.
Here we have to find the outfits can Bill create with the clothes he purchased:
8 * (4+2) = 48.
Bill can create 64 outfits with the clothes he purchased
The given parameters are:
\(Shirt = 8\)
\(Shorts = 4\)
\(Pant = 2\)
Bill can only select one of each cloth, at a time.
So, the number of outfits is the product of the number of shirts, shorts and the pants.
So, we have:
\(n = Shirt \times Shorts \times Pant\)
This gives
\(n = 8 \times 4 \times 2\)
Evaluate the product
\(n = 64\)
Hence, Bill can create 64 outfits
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What situation results in a final value of zero
The tempature of 5 Fahrenheit from a -5 Fahrenheit
The distance above sea level after increasing 24 meters from a depth of 24 meter below sea level
The situation that results in a final value of zero is when the temperature of -5 Fahrenheit is increased by 5 Fahrenheit, resulting in a final temperature of zero Fahrenheit
What is the situation results in a final value of zero?
The situation that results in a final value of zero is when the temperature is equal to -5 Fahrenheit, which is the same as 5 degrees below zero. This is because a change of 5 degrees Fahrenheit in either direction represents the same temperature difference.
Similarly, if an object or location is at a depth of 24 meters below sea level, and it is then raised by 24 meters, the final distance above sea level will be zero, which means the object or location is at sea level.
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Which equation represents a line that is perpendicular to y=2/3x−5 and passes through the point (6,12)?
The equation representing a line that is perpendicular to y=2/3x−5 and passes through the point (6,12) is y = -3x/2 +24
How to determine the equation of the line perpendicular to y=2/3x−5 and passes through the point (6,12)Equation of line perpendicular to another line is defined by the slope of the lines. If the slope is m, then the relationship between the slopes are
m = -1/m'
The equation of the line given y = 2/3x − 5
slope , m = 2/3
slope of the perpendicular line, m' = -1/m
m' = -3/2
The line passes through point (6,12)
y - 6 = -3/2(x-12
y - 6 = -3x/2 + 18
y = -3x/2 + 18 + 6
y = -3x/2 + 24
The equation of the perpendicular line required is y = -3x/2 +24
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What is an equation of the line that passes through the points (-4, 5)(−4,5) and (-4, -2)(−4,−2)?
Answer:
∅
Step-by-step explanation:
set up your equation which will be \(\frac{-2-5}{-4+4}\) which is undefined because denominator cannot be 0
What is the positive value for this number?
How far from 0 is the number on a number line?
and don't delete it
Answer:
what is the number that you are trying to see how far it is from 0 on the number line?
Step-by-step explanation:
Answer:
The absolute value of a number is the distance from zero to that number on the number line.
I am not sure this is what you quite need, will edit if I can Fix it.
Carmen is printing an essay that is 9 pages long, and each page contains 45 lines of text. It takes her 5 minutes to print the essay. At what rate did the essay print?
Answer:
1.8 pages per minute and 81 lines per minute.
If RS is parallel to AB, what is the width of the sand trap?
a. 149 b. 82 c. 107 d. 84
please helpppp
to solve a percentage problem, you have three possible questions: what is the total amount if you know the percentage rate and the part of the total amount? what is the percentage rate if you know the total amount and the part of the total amount? what is the part of the total if you know the percentage rate and the total? for number one, what must you do to get the total amount?
To determine the total amount in a percentage problem when given the percentage rate and the part of the total amount, you need to divide the part by the percentage rate and multiply the result by 100.
To find the total amount when you know the percentage rate and the part of the total amount, you can use the following formula:
Total Amount = (Part of Total Amount) / (Percentage Rate)
Let's break it down step by step:
1.Identify the given values:
Part of Total Amount: This represents the portion or fraction of the total amount that you know. Let's say it's denoted by P.
Percentage Rate: This is the rate or proportion expressed as a percentage. For example, if the rate is 20%, it would be written as 0.20 or 20/100.
2.Plug the values into the formula:
Total Amount = P / (Percentage Rate)
3.Calculate the total amount:
Simply divide the given part of the total amount by the percentage rate to find the total amount.
For example, let's say you know that the part of the total amount is $500 and the percentage rate is 25%. You can calculate the total amount as follows:
Total Amount = $500 / 0.25 = $2000
Therefore, the total amount would be $2000 in this case.
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10 points please help and marked brainlyist
Answer:
A.
Sample 1 mean: 6.375
Sample 2 mean: 6.375
Sample 3 mean: 6.625
B.
Range of sample means: 0.25
C.
The first and last boxes should be checked, as they are true.
Step-by-step explanation:
To calculate the mean you must add all of the numbers together and then divide the sum by the quantity of numbers. Ex: 3+7+8+3+7+9+6+8 = 51.
51/8 = 6.375.
Abigail is 8 years older than Cynthia. Twenty years ago Abigail was three times as old as Cynthia
was. How old is each of them now?
Plz explain
35. Four sisters are all 2 years apart in age. The total of their ages is equal to 28 years. How old is the oldest sister? A. 12 B. 11 C. 10 D. 8
To calculate the age of the four sisters which are 2 years apart in age
What is Age problems ?
Age problems are an example of a situation where linear equations are used. When resolving age-related issues, two separate individuals' (or things') ages from the present to the past or future are typically compared. Typically, the goal of these puzzles is to determine the present age of each subject.
Let us assume that the age of four sisters be
x, (x+2), (x+4), (x+6)
Now as we know that the sum of their age is 28,
Then we can write it as,
x + (x+2) + (x+4) + (x+6) = 28
now opening up the bracket we get,
x + x+2 + x+4 + x+6 = 28
adding all the x's and the numbers, we get,
4x + 12 = 28
4x = 28 - 12
4x = 16
x = 16 / 4
x = 4
now putting the value of x in the ages , we get the age of the oldest sister as,
4 + 6 = 10
Hence, The age of the oldest sister is 10
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can someone help me understand Slope-Intercept Form for algebra please???
Answer:
The slope-intercept form is simply the way of writing the equation of a line so that the slope (steepness) and y-intercept (where the line crosses the vertical y-axis) are immediately apparent. Often, this form is called y = mx + b form. This form of a line is one of the most commonly used in algebra classes.