√(x₂-x₁)² + (Y2 − 1)²
√(7-4)² + (11− 7)²
√(3)² + (4)²
√(9)+ (16)
√(25) = 5
Thus, CD = 5
Hope this helps!
Which of the following appear in the diagram below?
Check all that apply.
z
A. YX
B. ZXYZ
C. ZYXZ
D. YW
Answer:
A , B, D
Step-by-step explanation:
YX is the segment joining points Y and X and is defined (A)
∠ XYZ is the angle between XY and YZ and is defined (B)
∠ YXZ is the angle between YX and XZ
However there is no segment joining XZ ← not defined
YW is the segment joining points Y and W and is defined (D)
can someone help with this please
Use the information provided to create a polynomial function described below.
Degree of 3
Zeros are -3, 4, 6
End behavior is as x increases in the positive direction y increases in the positive direction.
Polynomials are mathematical expressions involving variables raised with non-negative integers and coefficients. The polynomial is x³- 7x² - 6x + 72.
What is a polynomial?Polynomials are mathematical expressions involving variables raised with non-negative integers and coefficients(constants who are in multiplication with those variables) and constants with only operations of addition, subtraction, multiplication and non-negative exponentiation of variables involved.
The polynomial using the given information can be made as shown below.
Given the zeros of the polynomial are -3, 4, and 6.
P(x) = (x+3)(x-4)(x-6) = x³- 7x² - 6x + 72
To check the end behaviour of the function, the graph of the function can be plotted as shown in the below image.
Hence, the polynomial is x³- 7x² - 6x + 72.
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hello i need help on these question if u can
Answer:
The third one of the first question.
a student
multiplied 4552 by 175 instead of multiplying by 157 how much was his product greater than the correct product
The student product is 81936 greater than the correct product
How to multiply numbers?The student was suppose to multiply 4552 by 157 but instead he multiplied 4552 by 175.
Therefore, let's find how much his product is greater than the correct product.
incorrect product = 4552 × 175 = 796600
Correct product = 4552 × 157 = 714664
Therefore,
difference = 796600 - 714664 = 81936
Therefore, his product is 81936 greater than the correct product.
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When you are determining the probability of an event, why must the probablilty be between 0 and 1? explain your answer.
Probability is the ratio of the desired outcomes to all possible outcomes.
If there are no desired outcomes, the ratio is 0 over all possible outcomes, thus 0.
If the event is all possible outcomes, the ratio is all possible outcomes over all possible outcomes, thus 1.
Probability can never be below zero or negative because desired outcomes can never be negative. If an event is impossible that means there are no desired outcomes meaning that probability is zero, thus couldn't fall below
Probability can never exceed 1 as desired outcomes can never be greater than total outcomes.
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3/8-2/7=2/7-3/8 is the statement true
Answer:
The statement is not true.
Step-by-step explanation:
[tex]\frac{3}{8} -\frac{2}{7} =\frac{2}{7} -\frac{3}{8}[/tex]
First, let us solve the left side.
[tex]\frac{3}{8} -\frac{2}{7} \\\\\frac{3*7}{8*7} -\frac{2*8}{7*8}\\\\\frac{21}{56} -\frac{16}{56}\\\\\frac{21-16}{56} \\\\\frac{5}{56}[/tex]
And now let us solve the right side.
[tex]\frac{2}{7}-\frac{3}{8} \\\\ \frac{2*8}{7*8}-\frac{3*7}{8*7} \\\\\frac{16}{56}-\frac{21}{56}\\\\\frac{16-21}{56}\\\\\frac{-5}{56}[/tex]
Therefore, it is clear that the left side is not equal to the right side.
∴ Left side ≠ Right side
∴ [tex]\frac{5}{56}[/tex] ≠ [tex]\frac{-5}{56}[/tex]
The playing time X of classical CDs has the normal distribution with mean 54 and standard
deviation 5; the N(54, 5) distribution. What is the relative frequency of classical CDs with playing
time X between 49 and 69 minutes?
Using the normal distribution, it is found that the relative frequency of classical CDs with playing time X between 49 and 69 minutes is 0.8403 = 84.03%.
Normal Probability DistributionThe z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.The mean and the standard deviation are given, respectively, by:
[tex]\mu = 54, \sigma = 5[/tex]
The relative frequency of classical CDs with playing time X between 49 and 69 minutes is the p-value of Z when X = 69 subtracted by the p-value of Z when X = 49, hence:
X = 69:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{69 - 54}{5}[/tex]
Z = 3
Z = 3 has a p-value of 0.9987.
X = 49:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{49 - 54}{5}[/tex]
Z = -1
Z = -1 has a p-value of 0.1584.
0.9987 - 0.1584 = 0.8403.
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Identify which functions have complex roots by selecting the function names on the provided coordinate plane.
The functions that have complex roots are b and d.
What is complex root?Complex roots are the imaginary root of polynomial functions. The complex roots are represented as α = a + ib, and β = c + id.
When the quadratic equation has a discriminant value less than zero will have imaginary roots.
Out of the given functions, a ,b, c, and d, the function with complex roots are b and d.
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Answer:
b &d is correct. i just took the test. :)
Step-by-step explanation:
f(x) = sin(x² + 2x - 1)²
f'(x) = ?
Need Best Answer? Give the explanation!
ok thx.
It depends if you mean
[tex]f(x) = \sin(x^2+2x-1)^2 = \sin^2(x^2+2x-1)[/tex]
i.e. the sine part is getting squared, or
[tex]f(x) = \sin(x^2+2x-1)^2 = \sin\left((x^2+2x-1)^2\right)[/tex]
i.e. the argument to sine is getting squared. I'll assume the first case, since it's fairly common convention to write [tex]g(x)^2 = \bigg(g(x)\bigg)^2[/tex].
Now if
[tex]f(x) = \sin^2(x^2+2x-1)[/tex]
• by the power and chain rules we have
[tex]f'(x) = 2 \sin(x^2 + 2x - 1) \left(\sin(x^2+2x-1)\right)'[/tex]
• using the derivative of sine and the chain rule again we have
[tex]f'(x) = 2 \sin(x^2+2x-1) \cos(x^2+2x-1) \left(x^2+2x-1\right)'[/tex]
• with the power and chain rules we have
[tex]f'(x) = 2 \sin(x^2+2x-1) \cos(x^2+2x-1) (2x+2)[/tex]
Recalling the double angle identity for sine,
[tex]\sin(2x) = \sin(x) \cos(x)[/tex]
we can rewrite the derivative among several other ways as
[tex]\boxed{f'(x) = (2x+2) \sin(2x^2+4x-2)}[/tex]
The number f of miles a ship is from its destination x hours after starting a voyage is given by f(x) = 80-20x. The number f of miles a submarine is from its destination x hours after leaving port is shown in the graph below. State the distance and length of time if each voyage. The ship traveled ___ miles in __ hours. The submarine traveled __ miles in __ hours.
The ship traveled 80 miles in 4 hours while the submarine traveled 75 miles in 5 hours.
How to determine the distance and time traveled?Based on the information provided, we can logically deduce that the ship is initially 80 miles away from its destination. Thus, f(x) would be equal to 0, if it traveled 80 miles and 0 miles away from its destination:
f(x) = 80 - 20x
0 = 80 - 20x
20x = 80
x = 80/20
x = 4 hours.
By critically observing the graph (see attachment) for the submarine's voyage, we can logically deduce the following:
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Can 10 people be divided into two groups with a ratio of 1 : 2? Explain.
Answer:
noStep-by-step explanation:
Can 10 people be divided into two groups with a ratio of 1 : 2?
Explain.
10 : 3 = 3.33
or 10 : 3 = 9 remaining 1
since it is not possible to divide a person into three parts, your answer is no
9 burgers and 1 doughnut cost $31.30. 3 doughnuts and 6 burgers cost $26.70. Find the cost of 2 burgers.
Answer:
$6.40
Step-by-step explanation:
let d be the cost of 1 doughnut and b the cost of 1 burger.
set up 2 equations and solve for b
9b + d = 31.3 → (1)
6b + 3d = 26.7 → (2)
multiplying (1) by - 3 and adding to (2) will eliminate d
- 27b - 3d = - 93.9 → (3)
add (2) and (3) term by term to eliminate d
- 21b + 0 = - 67.2
- 21b = - 67.2 ( divide both sides by - 21 )
b = 3.2
then
cost of 2 burgers = 2 × $3.20 = $6.40
A white tailed deer can sprint at speeds up to 30 miles per hour. American bison can run at speeds up to 3,520 feet per minute. Which animal is faster and by how many miles per hour ? There are 5,289 feet in one mile
We will see that the bison is faster, by 9.9 miles per hour.
Which animal is faster?
We know that the deer's speed is:
D = 30 mi/h
The bison's speed is:
B = 3,520 ft/min.
We want to convert the second speed to miles per hour, then we can use:
1 hour = 60 min
1 mile = 5289 ft
So, to get the speed in miles per hour, we need to multiply by 60 and divide by 5289, we will get:
B = 3,520 ft/min = 3,520*(60/5289) mi/h = 39.9 mi/h
So we can see that the bison is faster, by 9.9 miles per hour.
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What is 72,910 / 10^2
Given the following information, determine which lines, if any, are parallel. State the
postulate or theorem that justifies your answer.
Answer:
parallel lines a and b
parallel lines l and m
Step-by-step explanation:
25 A.
Angles 3 and 7 are alternate interior angles of lines a and b cut by transversal l.
Since angles 3 and 7 are congruent, lines a and b are parallel by the theorem:
If two lines are cut by a transversal such that alternate interior angles are congruent, then the lines are parallel.
25 B.
Angles 5 and 12 are same side interior angles of lines l and m and transversal b.
Since the sum of the measures of the angles 5 and 12 is 180, then angles 5 and 12 are supplementary angles making lines l and m parallel by the theorem:
If two lines are cut by a transversal such that same side interior angles are supplementary, then the lines are parallel.
The time t required to empty a tank varies inversely as
the rate r of pumping. If a pump can empty a tank in
45 minutes at a rate of 300 gallons per minute, how
long will it take to empty a tank at 500 gallons per
minute?
k
If [tex]t[/tex] and [tex]r[/tex] are inverse proportional to one another, then for some constant volume [tex]V[/tex] we have
[tex]V = tr[/tex]
It takes 45 min to empty a tank containing at 300 gal/min, so the tank contains
[tex]V = (45\,\mathrm{min}) \left(300\dfrac{\rm gal}{\rm min}\right) = 13500\,\mathrm{gal}[/tex]
of liquid.
If it's emptied at 500 gal/min, it would take
[tex]13500\,\mathrm{gal} = t \left(500\dfrac{\rm gal}{\rm min}\right) \implies t = \boxed{27\,\mathrm{min}}[/tex]
Someone help please!?!
Answer: a≈6,1.
Step-by-step explanation:
The sine theorem states:
[tex]\boxed {\frac{a}{sinA^0} =\frac{b}{sinB^0}= \frac{c}{sinC^0} }[/tex], ⇒
[tex]a=\frac{c*sinA^0}{sinC^0}[/tex]
m∡A=180°-(m∡B°+m∡C°)
=180°-(68°+76°)
=180°-144°
=36°. ⇒
[tex]a=\frac{c*sin36^0}{sin76^0}\\ =\frac{10*sin36^0}{sin76^0} \\\approx6,1.[/tex]
Good luck an' have a nice day!
In the interval 0 to the power 0360 find x in which the sin is 0.6691. give your answer to the nearest degree
The angle for which the sine value is 0.6691 is found to be 42°.
What is the sine value?
A trigonometric function called sin x, where x is the angle under discussion stands for the sine of an angle. The sine function is the proportion between the perpendicular and hypotenuse of a right-angled triangle. In other words, the hypotenuse and its value change as the angle changes, and it is the ratio of the side opposite to the angle under discussion. In the study of physics, sound and light waves are represented by the sine function.
When the angle between a right-angled triangle's base and hypotenuse changes, the sine's value changes.
[tex]sin^{-1}(0.6691)[/tex]=41.99°≈42°
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Convert from Decimal Notation to Scientific Notation
In the following exercises, write each number in scientific notation.
557. 0.00000103
Answer:
Hence, 0.00000103 can be expressed as [tex]$1.03 \times 10^{-6}$[/tex].
Step-by-step explanation:
- Given 0.00000103
- Move the decimal point so that the factor is greater than or equal to 1 but less than 10 .
- Then count n and write no. as a product with a power of 10 .
Step 1 of 1
Consider 0.00000103,
1.03
Decimal has moved 6 places to right.
The power will be negative as the original no. is less than 1 .
[tex]$$\begin{array}{r}1.03 \times 10^{-6} \\0.00000103=1.03 \times 10^{-6}\end{array}$$[/tex]
The graph of a linear function is shown,
Which word describes the slope of the line?
O positive
O negative
O zero
undefined
Answer:
postive
Step-by-step explanation:
im asian
For the graph of a linear function the slope of the line is positive, option A is correct.
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
Let the line is passing through points (-4, -1) and (0, 0)
m=1/4
The slope value is positive
Hence, for the graph of a linear function the slope of the line is positive, option A is correct.
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Can someone help me out on this
Answer:
Step-by-step explanation:
A given line passes through the points (2,3) and (2,−3). Determine the equation of the line that is perpendicular to the given line and passes through the point (−1,5).
could someone break this down for me? multiple choice in attachment
The required equation of the line is y = 5
Equation of a lineThe equation of a perpendicular line to a line in point-slope form is expressed as:
y-y1 = -1/m(x-x1)
m is the slope
(x1, y1) is any point on the line
Determine the slope
Slope = -3-3/2-2
y = ∞
Since there is no slope, hence the equation of the line will be in the form y = b
where b is the y-coordinate of the point. Hence the required equation of the line is y = 5
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Find two digit number that is one less than a square number,and when doubled is one less than a square number.
Select the correct answer.
Which statement is true about the effects of the transformations on the graph of function f to obtain the graph of function g.
g(x) = f(x − 3) + 4
A.
The graph of function f is shifted left 3 units and up 4 units.
B.
The graph of function f is shifted right 3 units and up 4 units.
C.
The graph of function f is shifted right 3 units and down 4 units.
D.
The graph of function f is shifted left 3 units and down 4 units.
=============================================================
Explanation:
When going from f(x) to f(x-3), we replaced x with x-3.
Doing this shifts the xy axis 3 units to the left since each x input is three units smaller than before. If we had the f(x) curve fixed in place while the axis moves like this, then it gives the illusion of the curve moving 3 units to the right.
The +4 at the end adds 4 to each y coordinate to shift things 4 units up.
What is the answer to the question down below
Answer:
I'm pretty sure the answer is 4
Step-by-step explanation:
Because SQ is 4 and it looks like QT is the same length
i have no clue what to do
Answer:
4x + 3y = 12
Step-by-step explanation:
Answer:
4x + 3y = 12
Step-by-step explanation:
At x-intercept, y = 0.
∴ When we substitute y = 0 into the equation, x should equal 3.
• 1st equation: 3x + 4(0) = 12 ⇒ x = 4 ❌
• 2nd equation: 4x + 3(0) = 7 ⇒ x = 7/4 ❌
• 3rd equation: 3x + 4(0) = 7 ⇒ x = 7/3 ❌
• 4th equation: 4x + 3(0) = 12 ⇒ x = 3 ✅
This means the 4th option is the correct one.
To check, we can replace x = 0 into the 4th equation to see if the y-intercept value comes out to be 4:
4(0) + 3y = 12 ⇒ y = 4 ✅
Solve for X if possible:
5x -4y = 24
x =_
The possible values of x be 4.8, 5.6 and 6.4.
What is equation?The statement of equality between two expressions consisting of variables and/or numbers.
Given:
5x -4y = 24
when y=0
5x = 24
x = 4.8
when y=1,
5x= 28
x= 5.6
when y=2,
5x= 32
x= 6.4
Hence, the possible values of x is 4.8, 5.6 and 6.4.
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Enter the correct answer in the box. Divide f(x) = | x + 20| by g(x) = x + 1.
the quotient will be:
[tex](f/g)(x) = \frac{|x + 20|}{x + 1}[/tex]
with x ≠ -1
How to get the quotient of functions?
For two functions f(x) and g(x), the quotient:
(f/g)(x) is equal to f(x)/g(x).
Here we have:
[tex]f(x) = |x + 20|\\\\g(x) = x + 1[/tex]
Taking the quotient, we get:
[tex](f/g)(x) = \frac{|x + 20|}{x + 1}[/tex]
Where we also need to add the restriction that x must be different than -1, as we can divide by zero.
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The mean output of a certain type of amplifier is 498 watts with a standard deviation of 12 watts. If 86 amplifiers are sampled, what is the probability that the mean of the sample would be less than 494.7 watts
Mean (m) = 498
Standard deviation (σ) = 12
Sample size (n) = 86
The probability that the sample mean would differ from Population mean by less than 494.7 watts
P(m - s < Z < m + s)
P(498-494.7 < Z < 498+ 494.7)
Using the Z formula :
Zscore = (x - m) / (σ/√n)
x = 498 - 494.7 = 3.3 , x = 498 + 494.7 = 992.7
Z = (3.3 - 498) / (12/√86) = -383.48
P(Z < -383.48)
Z = (992.7 - 498 ) / (12/√86) = 383.48
P(Z<383.48)
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Use natural logarithms to solve the equation. Round to the nearest thousandth.
7e^2x + 10 = 29
Answer:
x ≈ 0.499
Step-by-step explanation:
The value of x can be found by undoing the operations done to it.
SolutionThe operations done to the variable are ...
multiply it by 2use that as the exponent with a base of emultiply the result by 7add 10We undo these operations in reverse order:
7e^(2x) + 10 = 29 . . . . given
7e^(2x) = 19 . . . . . . . . . subtract 10
e^(2x) = 19/7 . . . . . . . . . divide by 7
2x = ln(19/7) . . . . . . . . take the natural logarithm
x = (ln(19/7))/2 . . . . . . divide by 2
The rounded result is ...
x ≈ 0.499