Answer:
yeh you are correct so it will be b is equal to minus 42 minus 9.3 that will be equal to -51.3 so that is the value of b
Please help I need to graph this and i can only have two points
Given the function:
\(f\mleft(x\mright)=\mleft(x+2\mright)\mleft(x-4\mright)\)You can rewrite it as follows:
\(y=\mleft(x+2\mright)\mleft(x-4\mright)\)You need to remember that the y-value is zero when the function intersects the x-axis. Then, you need to make it equal to zero, in order to find the x-intercepts:
\(\begin{gathered} 0=\mleft(x+2\mright)\mleft(x-4\mright) \\ (x+2)(x-4)=0 \end{gathered}\)Solving for "x", you get these two values:
\(\begin{gathered} x+2=0\Rightarrow x_1=-2 \\ \\ x-4=0\Rightarrow x_2=4 \end{gathered}\)In order to find the vertex, you can follow these steps:
1. Find the x-coordinate of the vertex with this formula:
\(x=-\frac{b}{2a}\)To find the value of "a" and "b", you need to multiply the binomials of the equation using the FOIL Method. This states that:
\(\mleft(a+b\mright)\mleft(c+d\mright)=ac+ad+bc+bd\)Then, in this case, you get:
\(\begin{gathered} y=(x)(x)-(x)(4)+(2)(x)-(2)(4) \\ y=x^2-4x+2x-8 \end{gathered}\)Add the like terms:
\(y=x^2-2x-8\)Notice that, in this case:
\(\begin{gathered} a=1 \\ b=-2 \end{gathered}\)Then, you can substitute values into the formula and find the x-coordinate of the vertex of the parabola:
\(x=-\frac{(-2)}{2\cdot1}=-\frac{(-2)}{2}=1\)2. Substitute that value of "x" into the function and then evaluate, in order to find the y-coordinate of the vertex:
\(\begin{gathered} y=x^2-2x-8 \\ y=(1)^2-2(1)-8 \\ y=1-2-8 \\ y=-9 \end{gathered}\)Therefore, the vertex of the parabola is:
\((1,-9)\)Knowing the x-intercepts and the vertex of the parabola, you can graph it.
Hence, the answer is:
Thando had 24 sweets. He ate one-quarter of his sweets and gave half of what was left to a friend.
A) How many sweets did he eat?
Answer:
The correct answer is: he ate 6 sweets.
Step-by-step explanation:
24 / 4 = 6
wath? is 300-100 do it good
Answer:
it's 200
Step-by-step explanation:
that's it's thats the anwrt
Answer:
200
Step-by-step explanation:
\(300 - 100\)
\(subtract ~the~ hundreds~ digit, 3 ~minus ~1, ~which ~ is ~ 2\)\(subtract ~the~ tens~ digit, 0 ~minus ~0, ~which ~ is ~ 0\)
\(subtract ~the~ units~ digit, 0 ~minus ~0, ~which ~ is ~ 0\)
\(put~it~back~into~its~place~value\)
\(300~minus~100~is~ 2 ~0~ 0, 200\)
1. A target is divided into 100 squares colored in dark blue, white, and light blue. Amber throws a beanbag that lands on the target.
co
9 25
dark blue
What is the probability that it will land on a dark blue square?
26
white
light blue
The probability of landing on the dark blue target is 2/5.
Finding probabilityProbability is the ratio of required to the total possible outcomes of an event.
The required outcome = dark blue= 25Total possible outcomes= entire sample Space = 100P(dark blue ) = 40/100
divide through by 20
P(dark blue ) = 2/5
Therefore, the probability of landing on target is 2/5
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quien es latino.......
Answer:
un montón de gente
Step-by-step explanation:
I'm really confused on how I'm only getting 4 / 5. Can someone help me?
The total pay for last week that Nelly earned was £180
How to determine the amount
From the information given, we have that;
For Monday - Friday
£8 is paid per hour for the first 15 hours£10 per hour for an extra hoursFor Saturday
Double the normal rate of £8 per hour
The total hour She worked from Monday to Friday is;
= 3. 5 + 5 + 2.5 + 4 + 2
= 17 hours
From Monday to Friday
£8 × 15 = £120
£10 × 2 = £20
For Saturday
£8 × 2 = £16
£8 × 5 = £40
Total amount = £120 + £20 + £40
Total amount = £180
Thus, the total pay for last week that Nelly earned was £180
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Find the constant of proportionality given s = kt,
and s = 60 when t = 6.
Answer:
sln
s=kt
60=k6
k=10
a)10
The population of a town increased from 3700 in 2005 to 5900 in 2009. Find the absolute and relative (percent) increase.
Absolute increase:
Relative increase:
%
The absolute increase in population is 2200, and the relative increase is approximately 59.46%.
To find the absolute and relative increase in population, we can use the following formulas:
Absolute increase = Final value - Initial value
Relative increase = (Absolute increase / Initial value) * 100%
Given the population in 2005 is 3700 and the population in 2009 is 5900, we can calculate the absolute and relative increase as follows:
Absolute increase = 5900 - 3700 = 2200
To calculate the relative increase, we need to divide the absolute increase by the initial value and then multiply by 100:
Relative increase = (2200 / 3700) * 100% ≈ 59.46%
Therefore, the absolute increase in population is 2200, and the relative increase is approximately 59.46%.
The absolute increase represents the actual difference in population count between the two years, while the relative increase gives us the percentage change relative to the initial value. In this case, the population increased by 2200 individuals, and the relative increase indicates that the population grew by approximately 59.46% over the given period.
Note that the relative increase is expressed as a percentage, which makes it easier to compare changes across different populations or time periods.
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Suppose you are going to roll a fair; six-sided die J number of times and record the proportion of times that an even number (2. 4.or 6) is showing: Your first experiment used 60 rolls. but in your second experiment you used 240 rolls. For the second experiment, how is the center and spread of the sampling distribution different from the first experiment? Bolh the center and !he sprcad wIll decrease: Thc cenler will remain lhc sainc: bul thc sprcad will decrease Bolh the cenler and the spread wlll renain thic: salne The cenler will remain the >alne; bul tlic sprcad wvill lncicase:
From the sampling distribution, the correct answer is: Both the center will remain the same, but the spread will decrease.
How is the center and spread of the sampling distribution different from the first experimentThe center of the sampling distribution will remain the same, which is the expected proportion of even numbers showing on a single roll of the die, which is 1/2 or 0.5. This is because the probability of getting an even number on a single roll of the die does not change with the number of rolls in the experiment.
However, the spread of the sampling distribution will decrease as the number of rolls increases. This is because the larger the sample size, the more precise our estimate of the proportion of even numbers showing on each roll of the die will be. With more rolls, we will have a better idea of the true proportion of even numbers that the die produces.
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Eugene and Jessica each improved their yards by planting hostas and geraniums. They bought
their supplies from the same store. Eugene spent $150 on 18 hostas and 6 geraniums. Jessica
spent $113 on 7 hostas and 16 geraniums. Find the cost of one hosta and the cost of one
geranium.
The cost of one hosta is approximately $7 and the cost of one geranium is approximately $4.
To find the cost of one hosta and one geranium, we can set up a system of equations based on the given information.
Let's assume the cost of one hosta is represented by 'h' and the cost of one geranium is represented by 'g'.
From the information given, we can set up the following equations:
Eugene's spending:
18h + 6g = $150
Jessica's spending:
7h + 16g = $113
We can now solve this system of equations to find the values of 'h' and 'g'.
Multiplying the first equation by 2 and the second equation by 3 to eliminate 'g', we get:
36h + 12g = $300
21h + 48g = $339
Now, we can subtract the second equation from the first to eliminate 'h':
(36h + 12g) - (21h + 48g) = $300 - $339
36h - 21h + 12g - 48g = -$39
15h - 36g = -$39
Simplifying further, we have:
15h - 36g = -$39
Now we can solve this equation for 'h' and substitute the value back into any of the original equations to find 'g'.
Let's solve for 'h':
15h = 36g - $39
h = (36g - $39) / 15
Substituting this value of 'h' into Eugene's equation:
18[(36g - $39) / 15] + 6g = $150
(648g - $702) / 15 + 6g = $150
648g - $702 + 90g = $150 * 15
738g - $702 = $2250
738g = $2250 + $702
738g = $2952
g = $2952 / 738
g ≈ $4
Now, substituting the value of 'g' back into Eugene's equation:
18h + 6($4) = $150
18h + $24 = $150
18h = $150 - $24
18h = $126
h = $126 / 18
h ≈ $7
Therefore, the cost of one hosta is approximately $7 and the cost of one geranium is approximately $4.
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10 ( 4 + 6b ) - 28b + 23? PLSSS HELPPP MEEE
Answer :
32b + 63
Hope this help!
find the mean of the distribution
Answer:
yyy
Step-by-step explanation:
Answer:Canst see
Step-by-step explanation:
sorry my guy
You are buying candy bars from an online store. The cost for each candy bar is $1.50 and the store charges a $3.50 shopping fee. Write a linear equation to represent the total cost, y, of the number of candy bars purchased, x. How many candy bars can you buy with $29.
The linear equation of the total cost is y = 1.5x + 3.5 and the number of candy bars for $29 will be 17.
What is an equation?The equation in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that the cost for each candy bar is $1.50 and the store charges a $3.50 shopping fee.
The linear equation can be written as:-
y = 1.5x + 3.5
Here, y = total cost and x = Number of candy bar
The number of candy bars for $29 will be:-
y = 1.5x + 3.5
29 = 1.5x + 3.5
1.5x = 25.5
x = 25.5 / 1.5
x = 17
Therefore, the linear equation of the total cost is y = 1.5x + 3.5 and the number of candy bars for $29 will be 17.
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can anybody help me with this?
Answer:
Option (a)
Step-by-step explanation:
\(\sqrt[6]{1000m^{3} n^{12} } = \sqrt[6]{10^{3} } \sqrt[6]{m^{3} } \sqrt[6]{n^{12} } =\\\sqrt{10} \sqrt{m} n^{2} = n^{2} \sqrt{10m}\)
there are 25 student in a class. five of then scored A and 10 of them score B while the other scored C for Biostatistics. if a student is selected at random, calculate the probability that the selected student scored A or B in biostastics.
There is a 60% probability that a randomly selected student from the class scored either an A or B in Biostatistics.
To calculate the probability that a randomly selected student scored either an A or B in Biostatistics, we need to consider the number of students who scored A and B and divide it by the total number of students in the class.
Given that there are 25 students in the class, 5 of them scored an A and 10 scored a B. To calculate the probability, we add the number of students who scored A (5) to the number of students who scored B (10):
Number of students who scored A or B = Number of students who scored A + Number of students who scored B = 5 + 10 = 15.
Therefore, the probability that a randomly selected student scored A or B
in Biostatistics is:
Probability = Number of students who scored A or B / Total number of students = 15 / 25 = 0.6 or 60%.
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PLEASE HELP ME THIS IS DUE IN 10 MINUTES PLEASE HELP ME!! THANK YOU!!
Answer:
The sequence is:
\(\:\left\{a_{1,\:}a_2,\:a_3,\:a_4\right\}\:=\:\left\{-10,\:-23,\:-62,\:-179\right\}\)
Step-by-step explanation:
Given the recursive function
\(a_n=3a_{n-1}+7\)
As the first term is -10.
i.e.
\(a_1=-10\)
Putting n = 2 to determine the 2nd term
\(a_n=3a_{n-1}+7\)
\(a_2=3a_{2-1}+7\)
\(a_2=3a_1+7\)
\(= 3(-10)+7\) ∵ \(a_1=-10\)
\(= -23\)
Putting n = 3 to determine the 3rd term
\(a_n=3a_{n-1}+7\)
\(a_3=3a_{3-1}+7\:\:\)
\(a_3=3a_2+7\:\:\:\:\:\)
\(= 3(-23)+7\) ∵ \(a_2=-23\)
\(= -62\)
Putting n = 4 to determine the 4th term
\(a_n=3a_{n-1}+7\)
\(a_4=3a_{4-1}+7\)
\(a_4=3a_3+7\:\:\:\:\:\)
\(= 3(-62)+7\) ∵ \(a_3=-62\)
\(=-179\)
Therefore, the sequence is:
\(\:\left\{a_{1,\:}a_2,\:a_3,\:a_4\right\}\:=\:\left\{-10,\:-23,\:-62,\:-179\right\}\)
Use the expression 10 x ? Where represents a factor between 1 and 9.What is true about the digit in the ones place of each product? Explain.3rd grade student
In mathematics, every integer in a number has a place value. Therefore, the place value of a number is the value represented by a digit in a number based on its position in the number.
For example, consider the number 30.
3 is in the tens place while,
0 is in the ones place.
Going by the above explanation:
The digit in the ones place in each of the products (10,20,30,40,50,...90) is 0
For every product obtained, it will always have a ones place value of 0
Select the correct answer from each drop-down menu.
The total area of the three triangles is
square units.
The area of the figure is
square units.
The total area of the three triangles is square units is 36 and the area of the figure is square units is 60.
What is the triangle?The triangle can be defined as a three-sided polygon in geometry, and it consists of three vertices and three edges. The sum of all the angles inside the triangle is 180°.
From the figure, the area of triangles can be calculated using the:
Area = (1/2)height×base length
Area of three triangle = 1/2(4×6) + 1/2(6×4) + 1/2(4×6)
Area of three triangle = 1/2(24×3) = 36 square units
Area of the figure = area of three triangle + area of the rectangle
= 36 + 6×4
= 60 square units
Thus, the total area of the three triangles is square units is 36 and the area of the figure is square units is 60.
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Multiply. Write your answer as a fraction in simplest form. −1(4/5)=
Answer:
-4/5
Step-by-step explanation: When you multiply anything by one it is always itself but in this case the one has a negative in front of it so when you multiply a positive number by a negative it makes the number negative.
-1 * 4/5
-4/5
How is the product of 4 and 2 shown using integer tiles?
+
+
+
+
+
+
+
+
+
+
+
+
+
-
JE
A group of researchers establish a p-value of 0.05 for their hypothesis test. What does this mean?
a. The probability of getting a significant result for the test is 5%.
b. There is 5% probability that a true null hypothesis will be rejected.
C. The chi-square critical value for their dataset is 0.05
d. Only measured values of 0.05 or greater will be included in the test.
Answer:
b
Step-by-step explanation:
b. There is 5% probability that a true null hypothesis will be rejected.
A p-value of 0.05 represents the probability of obtaining a test statistic as extreme or more extreme than the one observed under the assumption that the null hypothesis is true. In other words, it is the probability of observing the data or more extreme data assuming the null hypothesis is true. It is also the threshold level of significance beyond which the null hypothesis is rejected in favor of the alternative hypothesis. A p-value of 0.05 means that there is a 5% probability that the observed results occurred by chance under the null hypothesis and that there is a 95% probability that the observed results occurred due to a real effect.
What is the nth term of this sequence? 1, 4, 7, 10
please explain
Answer: 13
Step-by-step explanation: The number goes up by three each time, so it would be 13.
Answer:
The nᵗʰ term of the sequence is 3n - 2.
Step-by-step explanation:
GIVEN :↝ First-term a₁ = 1↝ Second-term a₂ = 4↝ Third-term a₃ = 7↝ Fourth term a₄ = 10TO FIND :↝ nth term of the sequence USING FORMULA :\(\longrightarrow{\sf{a_n = a + (n - 1)d}}\)
where :
» aₙ = nth term» a = first term» n = number of terms» d = common difference SOLUTION :Here we can see that the difference between two terms is 3.
Thus, finding the nth term of the sequence by substituting all the given values in the formula :
\(\longrightarrow{\sf{a_n = a + (n - 1)d}}\)
\(\longrightarrow{\sf{a_n = 1 + (n - 1)3}}\)
\(\longrightarrow{\sf{a_n = 1 + (n \times 3 - 1 \times 3)}}\)
\(\longrightarrow{\sf{a_n = 1 +(3n - 3)}}\)
\(\longrightarrow{\sf{a_n = 1 +3n - 3}}\)
\(\longrightarrow{\sf{\underline{\underline{a_n = 3n - 2}}}}\)
Hence, the nth term of the sequence is 3n - 2.
—————————————————How much border is needed for a frame that is 5.5 inches by 6.5 inches?
Answer:
The frame needs a border of 35.75 inch² for a frame that is 5.5 inches by 6.5 inches.
Step-by-step explanation:
Given:
Given that the frame is 5.5 inches by 6.5 inches.
To Determine:
We need to determine the border needed for a frame that is 5.5 inches by 6.5 inches.
In order to determine the area of the border, all we need is to multiply 5.5 inches by 6.5 inches as it would give us the area of the frame.
Since the frame is rectangular, and the area of the rectangular object can be determined using the formula:
\(A = wl\)
substituting the values
\(A = 5.5 \times 6.5\)
\(A=35.75\) inch²
Therefore, the frame needs a border of 35.75 inch² for a frame that is 5.5 inches by 6.5 inches.
Lee finds 44 shells. Khai finds 39
shells. How many shells do they still
need if they want 90 shells in all?
shells
Answer:
7
Step-by-step explanation:
8. Select the expression that is equivalent to 12/48.
A. 6(8+6)
B. 12(4+1)
C. 4(44+3)
D. 8(6+4)
Answer:
D
Step-by-step explanation:
The construction of an 80-meter bridge was finished in 12 weeks. How much of the bridge was built on average each week?
Answer: 6.6 meters a week
Step-by-step explanation:
This problem is quite simple
You take 80 and divide it by 12
80/12
which equals
6.6
Which polynomial is prime?
O 3x³ + 3x² - 2x - 2
O 3x³ − 2x² + 3x − 4
-
O
4x³ + 2x² + 6x + 3
O
4x³+4x²-3x - 3
Answer:
B
Step-by-step explanation:
a prime polynomial is one which does not factor into 2 binomials.
its only factors are 1 and itself
attempt to factorise the given polynomials
3x³ + 3x² - 2x - 2 ( factor the first/second and third/fourth terms )
= 3x²(x + 1) - 2(x + 1) ← factor out common factor (x + 1) from each term
= (x + 1)(3x² - 2) ← in factored form
--------------------------------------------------
3x³ - 2x² + 3x - 4 ( factor the first/second terms
= x²(3x - 2) + 3x - 4 ← 3x - 4 cannot be factored
thus this polynomial is prime
----------------------------------------------------
4x³ + 2x² + 6x + 3 ( factor first/second and third/fourth terms )
= 2x²(2x + 1) + 3(2x + 1) ← factor out common factor (2x + 1) from each term
= (2x + 1)(2x² + 3) ← in factored form
-------------------------------------------------
4x³ + 4x² - 3x - 3 ( factor first/second and third/fourth terms )
= 4x²(x + 1) - 3(x + 1) ← factor out common factor (x + 1) from each term
= (x + 1)(4x² - 3) ← in factored form
--------------------------------------------------
the only polynomial which does not factorise is
3x³ - 2x² + 3x - 4
HELP ASAP
The radius of a quarter circle is 1.4 millimeters. What is the quarter circle's area?
Answer:
A = 1.5386
Step-by-step explanation:
Quarter circle area formula:
A = (πr²)/4
A= (π1.4²)/4
A = (3.14*1.96)/4
A = (6.1544)/4
A = 1.5386
Find the line integral along the curve C from the origin along the x-axis to the point (6, 0) and then counterclockwise around the circumference of the circle x2 y2
Parameterize C by the two vector functions,
r(t) = (1 - t) (0, 0) + t (6, 0) = (6t, 0)
with 0 ≤ t ≤ 1, and
s(t) = (6 cos(t), 6 sin(t))
with 0 ≤ t ≤ π/2.
Then the line integral over C is equal to the sum of the line integrals over each path:
\(\displaystyle \int_C dS = \int_0^1 \|r'(t)\| \, dt + \int_0^{\frac{\pi}2} \|s'(t)\| \, dt\)
\(\displaystyle \int_C dS = \int_0^1 \sqrt{6^2 + 0^2} \, dt + \int_0^{\frac{\pi}2} \sqrt{(-6\sin(t))^2 + (6\cos(t))^2} \, dt\)
\(\displaystyle \int_C dS = 6 \int_0^1 dt + 6 \int_0^{\frac{\pi}2} dt\)
\(\displaystyle \int_C dS = 6 + \frac{6\pi}2 = \boxed{6+3\pi}\)
can someone please help me with this