Answers
Related Questions
Suppose the time it takes a data collection operator to fill out an electronic form for a database is uniformly distributed between 1.0 and 2.1 minutes. (a) determine the mean of x. (round your answer to 2 decimal places.)
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= (1.0+2.1) / 2
=1.55
An angle measures 72° less than the measure of a complementary angle. What is the measure of each angle?
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Angle a: 90 degrees - 72 degrees = 18 degrees
Angle b: 72 degrees
Answer: [tex]81^{\circ}\ \text{ and }\ 9^{\circ}[/tex]
Step-by-step explanation:
We know that the sum of two complementary angles is [tex]90^{\circ}[/tex].
Given : An angle measures 72° less than the measure of a complementary angle.
Let x be the angle , then the measure of other angle will be x-72.
Since they area complementary , then we have
[tex]x+x-72=90\\\\\Rightarrow\ 2x=90+72\\\\\Rightarrow\ 2x=162\\\\\Rightarrow\ x=\dfrac{162}{2}=81[/tex]
Therefore, the measure of angles are :
[tex]81^{\circ}\ \text{ and }\ (81-72)^{\circ}=9^{\circ}[/tex]
Sakura speaks 150150150 words per minute on average in hungarian, and 190190190 words per minute on average in polish. she once gave cooking instructions in hungarian, followed by cleaning instructions in polish. sakura spent 555 minutes total giving both instructions, and spoke 270270270 more words in polish than in hungarian. how long did sakura speak in hungarian, and how long did she speak in polish?
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Sakura speaks 150 words per minute on average in hungarian, and 190 words per minute on average in polish. she once gave cooking instructions in hungarian, followed by cleaning instructions in polish. sakura spent 5 minutes total giving both instructions, and spoke 270 more words in polish than in hungarian. how long did sakura speak in hungarian, and how long did she speak in polish?
Let
x------> total words spoken by sakura in hungarian------> 150 words /minute
y------> total words spoken by sakura in polish-----------> 190 words /minute
we know that
(x/150)+(y/190)=5--------- > equation 1
y=270 +x-------------------- > equation 2
substituting 2 in 1
(x/150)+(270+x)/190=5
multiplying all the expression by (150)*(190)
190x+150*(270+x)=5*190*150
190x+40500+150x=142500
340x=102000-------------- > x=300
x=300 ------------- > total words spoken by sakura in hungarian
y=270+x=270+300=570
y=570 ----------- > total words spoken by sakura in polish
the question is how long did sakura speak in hungarian, and how long did she speak in polish?
y=570 words in polish-------------------> 190 words /minute
if 190 words-----------------------------> 1 minute
570 words-------------------------- X
X=570/190=3 minutes
In polish Sakura spoke 3 minutes
x=300 words in hungarian-------------------> 150 words /minute
if 150 words-----------------------------> 1 minute
300 words-------------------------- X
X=300/150=2 minutes
In hungarian Sakura spoke 2 minutes
Answer:
3 minutes polish 2 minutes hungarian
Step-by-step explanation:
I just did it on Kahn Academy, and this was correct.
The formula represents the surface area S of a cube with side lengths x.
S=6x^2
Solve for x.
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The solution of x is √(S/6).
The formula to find the surface area of a cube with side lengths x is:
S = 6x2
To solve for x:
Divide both sides by 6: S/6 = x2
Take the square root of both sides to isolate x: x = √(S/6)
A circle has an arc of length 24pi that is intercepted by a central angle of 80 degrees. what is the radius of the circle?
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80/360 x 2pi x r = 24pi
r = 54
Are the two triangles are congruent ?
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Algebraically prove that X^3+10/x^3+9=1+ 1/x^3+9 where x is not equal to -3
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[tex] \dfrac{x^3+10}{x^3+9}=1+\dfrac{1}{x^3+9} \\ \\ \\ \dfrac{x^3+10}{x^3+9}=\dfrac{(x^3+9)+1}{x^3+9}\\ \\ \\ \dfrac{x^3+10}{x^3+9}=\dfrac{x^3+10}{x^3+9} \\ \\ \\x\in R \qquad x\in (-\infty, +\infty) [/tex]
PLEASE HELP! WILL MARK BRAINLIEST!
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The amount of those who rented a car: 11
11/25 = 0.44 or 44%
Answers anybody?????
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.. (1/2)*20*12 = (1/2)*30*h
.. h = (2/3)*12 = 8 . . . . . feet
Kevin is 4 times as old as Daniel and is also 6 years older than Daniel.
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Here's what you know:
· Kevin's age is 4 times Daniel's age.
· Kevin's age is 6 more than Daniel's age.
In numbers:
· 4d
· d + 6
where d is Daniel's age. Kevin's age is constant, and both expressions represent his age, so you can set them equal to each other to solve for d.
4d = d + 6
4d - 6 = d
-6 = -3d
2 = d
Daniel is 2 and Kevin is 8.
I hope this helps you!
The volume, V, of a soap bubble is related to its surface area, A. In cubic centimeters, this relationship is shown by the formula V = 0.094A 3/2. What is the surface area of a bubble with a volume of 5 cm3 ?
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V = 0.094 * (A) ^ (3/2)
Now we clear the area:
(A) ^ (3/2) = V / 0.094
A = (V / 0.094) ^ (2/3)
We now replace the volume:
A = (5 / 0.094) ^ (2/3)
A = 14.14364782 cm ^ 2
Answer:
The surface area of a bubble with a volume of 5 cm3 is:
A = 14.14364782 cm ^ 2
The surface area of a soap bubble with a volume of 5 cm³, given the relationship V = 0.094 [tex]A^{3/2[/tex], can be calculated by rearranging and solving the formula, resulting in an approximate surface area of 36.3 cm².
To find the surface area of a soap bubble with a volume of 5 cm³, using the given relationship V = 0.094 [tex]A^{3/2[/tex], we need to rearrange the formula to solve for A (the surface area). We will take the following steps to find A:
First, divide both sides of the equation by 0.094 to isolate [tex]A^{3/2[/tex] on one side:
[tex]A^{3/2[/tex] = V / 0.094
Next, substitute V = 5 cm³ into the equation:
[tex]A^{3/2[/tex] = 5 / 0.094
Calculate the right-hand side:
[tex]A^{3/2[/tex] ≈ 53.19
Finally, raise both sides of the equation to the power of 2/3 to solve for A:
A = [tex](53.19)^{2/3[/tex]
Calculating the right-hand side gives us the surface area A. After performing these calculations, we find that the surface area of a bubble with a volume of 5 cm³ is approximately 36.3 cm².
look at the pictures below
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A packet contains 24 pens.
Henry and Alice share them in the ratio 3 : 5
How many does Alice receive?
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How are you doing? In this case, you would get 24, and divide it by 5, resulting in 4.8
Now you multiply 4.8 by 5, which is 14.4 :)
Hope you understand, contact me for further assistance!
Thank you,
Darian D.
describe the vertical asymptotes) and holes) for the graph of y=(x+2)(x+4)/(x+4)(x+1)
A. asymtotes: x=-1 and hole: x=4
B. asymtotes: x=2 and hole: x=-1
C. asymtotes: x= -1 and hole: x=-4
D. asymtotes: x=1 and hole: x=4
Can someone plzzzz help me!??
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The function is not defined for those values where the denominator is equal to zero.
We have then:
y = (x + 2) (x + 4) / (x + 4) (x + 1)
Studying the denominator:
(x + 4) (x + 1) = 0
x = -4
x = -1
Answer:
C. asymtotes: x = -1 and hole: x = -4
Mr. Berger assigned the following system of equations to be solved for homework. 2x-3y = -12
4x+ y= -10
Which is the x-coordinate of the correct solution?
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Answer:
A: x= -3
Step-by-step explanation:
The x- coordinate is of solution is -3.
What is Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
2x-3y = -12...........(1)
4x+ y= -10..............(2)
Now, multiply Equation (1) by 2 we get
4x - 6y = -24
4x + y = -10
________
-7y = -14
y= 2
and, 4x+ y= -10
4x + 2 = -10
4x = -12
x= -12/4
x= -3.
Hence, the x- coordinate is -3.
Learn more about Equation here:
https://brainly.com/question/29657983
#SPJ2
Does the function model exponential growth or decay? g(t)=1.7 * 0.8^t
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Answer:
decay
just answered this question.
Step-by-step explanation:
Answer:
decaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecaydecay
Step-by-step explanation:
What number is 22 spaces to the right of negative 7?
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Final answer:
By adding 22 to -7, we find that the number 22 spaces to the right of -7 on the number line is 15.
Explanation:
The question asks for the number that is 22 spaces to the right of negative 7 on a number line. To find this, you can simply add 22 to negative 7. Here's the calculation: -7 + 22 = 15. Therefore, the number that is 22 spaces to the right of negative 7 is 15. To determine the number that is 22 spaces to the right of -7 on the number line, we need to add 22 to -7. Moving 22 spaces to the right indicates an increase in value by 22. Therefore, when we add 22 to -7, we get the final answer of 15. This calculation reflects the concept that moving to the right on the number line corresponds to increasing the numerical value, while moving to the left corresponds to decreasing it. In this case, starting from -7 and moving 22 spaces to the right results in a value of 15. Hence, 15 is the number that is 22 spaces to the right of -7.
The ratio of zoya's age to nelya's age is 1:4. twenty years from now, nelya will be twice as old as zoya will be then. find their present ages.
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B) 2 * (z + 20) = nelya + 20
Inputting equation A into B)
2z + 40 = 4z + 20
2z = 20
zoya's age is 10 and nelya's age is 40
Answer:
Zoya is 10 years old. Nelya is 40 years old.
Workers have 1600 m of fencing to enclose a rectangular area where a music festival will be held. The table represents a quadratic function that shows how the area of the rectangle formed by the fence depends on the length of the rectangle.
Length (m) Area (m²)
0 0
100 70,000
200 120,000
300 150,000
400 160,000
500 150,000
600 120,000
700 70,000
800 0
Select from the drop-down menu to correctly complete the sentence.
The x-coordinate of the vertex represents
the length that result in the largest possible area
the smallest possible area of the rectangle
the greatest possible length of any rectangle formed
the greatest possible area of a rectangle
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This should get you a hundred on the 4.11 quiz. :)
The correct option is the x-coordinate of the vertex representing the length.
What is a quadratic equation?A quadratic equation is an equation whose leading coefficient is of second degree also the equation has only one unknown while it has 3 unknown numbers.
It is written in the form of ax²+bx+c.
As it is given that the perimeter of the rectangular fencing is 1600 m.
Now, since the shape of the fence is rectangular, therefore, the x-coordinate of the vertex represents the length that results in the largest possible area, while the y-coordinate is the width of the rectangular fencing.
Hence, the correct option is the x-coordinate of the vertex representing the length.
Learn more about Quadratic Equations:
https://brainly.com/question/2263981
Quadrilateral JPRAQuadrilateral JPRA is similar to quadrilateral KDEWquadrilateral KDEW . PR=27 mmPR=27 mm , DE=15 mmDE=15 mm , and WE=25 mmWE=25 mm .
What is AR?
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[tex] \frac{PR}{DE} = \frac{AR}{WE} [/tex]
substitute
[tex] \frac{27}{15} = \frac{AR}{25}[/tex]
Cross multiply
27*25 = AR*15
Simplify
675 = 15*AR
Divide both sides by 15
45=AR
PLEASEEEEE HELP WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Triangle HJK is transformed to similar triangle H’J’K’:
What is the scale factor of dilation?
1/2
1/3
1/4
1/5
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Answer:
The scale factor of the dilation is [tex]\frac{1}{4}[/tex]
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its corresponding sides is equal and this ratio is called the scale factor
Let
z------> the scale factor
so
[tex]z=\frac{K'J'}{KJ}=\frac{K'H'}{KH}=\frac{J'H'}{JH}[/tex]
substitute the values
[tex]z=\frac{K'J'}{KJ}[/tex] -----> [tex]z=\frac{1}{4}[/tex]
The scale factor is less than 1
therefore
The dilation is a reduction
What is the sum of the polynomials (m+n+3)(m+n+4)
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First distribute the m in the first set of parentheses to the second set of parentheses. Do the same process with the n and the 3.
m^2 + mn + 4m + mn + n^2 + 4n + 3m +3n + 12
Combine Like terms. Final Answer:
m^2 + n^2 + 2mn + 7m + 7n + 12
Answer:
2m+2n+7
Step-by-step explanation:
Given: Two polynomial
[tex]P_1=m+n+3[/tex]
[tex]P_2=m+n+4[/tex]
We need to find the sum of polynomial.
[tex]Sum=P_1+P_2[/tex]
[tex]\Rightarrow (m+n+3)+(m+n+4)[/tex]
write like term together
[tex]\Rightarrow m+m+n+n+3+4[/tex]
Combine the like term
[tex]\Rightarrow 2m+2n+7[/tex]
Hence, The sum of two polynomial is 2m+2n+7
Solve x + y + z = 12
2x – y – z = -6
x + 3y + 5z = 44
(4, 3, 5)
no solutions
(2, 4, -6)
(2, 4, 6)
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Proof:
Solve the following system:{x + y + z = 12 | (equation 1){2 x - y - z = -6 | (equation 2){x + 3 y + 5 z = 44 | (equation 3)
Swap equation 1 with equation 2:{2 x - y - z = -6 | (equation 1){x + y + z = 12 | (equation 2){x + 3 y + 5 z = 44 | (equation 3)
Subtract 1/2 × (equation 1) from equation 2:{2 x - y - z = -6 | (equation 1){0 x+(3 y)/2 + (3 z)/2 = 15 | (equation 2){x + 3 y + 5 z = 44 | (equation 3)
Multiply equation 2 by 2/3:{2 x - y - z = -6 | (equation 1){0 x+y + z = 10 | (equation 2){x + 3 y + 5 z = 44 | (equation 3)
Subtract 1/2 × (equation 1) from equation 3:{2 x - y - z = -6 | (equation 1){0 x+y + z = 10 | (equation 2){0 x+(7 y)/2 + (11 z)/2 = 47 | (equation 3)
Multiply equation 3 by 2:{2 x - y - z = -6 | (equation 1){0 x+y + z = 10 | (equation 2)v0 x+7 y + 11 z = 94 | (equation 3)
Swap equation 2 with equation 3:{2 x - y - z = -6 | (equation 1){0 x+7 y + 11 z = 94 | (equation 2){0 x+y + z = 10 | (equation 3)
Subtract 1/7 × (equation 2) from equation 3:{2 x - y - z = -6 | (equation 1){0 x+7 y + 11 z = 94 | (equation 2){0 x+0 y - (4 z)/7 = (-24)/7 | (equation 3)Multiply equation 3 by -7/4:{2 x - y - z = -6 | (equation 1){0 x+7 y + 11 z = 94 | (equation 2){0 x+0 y+z = 6 | (equation 3)
Subtract 11 × (equation 3) from equation 2:{2 x - y - z = -6 | (equation 1){0 x+7 y+0 z = 28 | (equation 2){0 x+0 y+z = 6 | (equation 3)
Divide equation 2 by 7:{2 x - y - z = -6 | (equation 1){0 x+y+0 z = 4 | (equation 2){0 x+0 y+z = 6 | (equation 3)
Add equation 2 to equation 1:{2 x + 0 y - z = -2 | (equation 1){0 x+y+0 z = 4 | (equation 2){0 x+0 y+z = 6 | (equation 3)Add equation 3 to equation 1:{2 x+0 y+0 z = 4 | (equation 1){0 x+y+0 z = 4 | (equation 2){0 x+0 y+z = 6 | (equation 3)
Divide equation 1 by 2:{x+0 y+0 z = 2 | (equation 1){0 x+y+0 z = 4 | (equation 2){0 x+0 y+z = 6 | (equation 3)
Collect results:
Answer: {x = 2, y = 4 , z = 6
How do you do x ^4-4? What is the x values?
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A difference of two perfect squares (A² - B²) can be factored into (A+B) • (A-B)
then
x ^4-4--------> (x²-2)*(x²+2)
(x²-2)--------> (x-√2)*(x+√2)
x1=+√2
x2=-√2
the other term
(x²+2)=0-> x²=-2-------------- x=(+-)√-2
i is called the imaginary unit. It satisfies i² =-1
Both i and -i are the square roots of -1
√ -2 =√ -1• 2 = √ -1 •√ 2 =i • √ 2
The equation has no real solutions. It has 2 imaginary, or complex solutions.
x3= 0 + √2 i
x4= 0 - √2 i
the answer is
the values of x are
x1=+√2
x2=-√2
x3= 0 + √2 i
x4= 0 - √2 i
Explain why the function f(x)=x^2 is not invertible
Answers
When you reflect the curve across the line y=x, it becomes multiple-valued, hence its inverse is not a function.
A rectangular prism has a volume of 360 in3. If the height measures 4 in., which base measurements could the prism have? 4 in. by 20 in. 45 in. by 45 in. 6 in. by 15 in. 5 in. by 19 in.
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Let Ab = area of the base
h = 4 in
V = Ab × h
360 = Ab × 4
Ab = 360 ÷ 4
Ab = 90 in²
Ab = l × w
The product of the base measurements must be 90.
90 = l × w
⇒ 6 in × 15 in = 90 in² ⇒ The base measurements could be: 6 in by 15 in
The area of a rectangular wall of a barn is 96 square feet. its length is 4 feet longer than twice its width. find the length and width of the wall of the barn?
Answers
width = x
length = 2x + 4
x(2x + 4) = 96
2x^2 + 4x - 96 = 0
(x - 6)(x + 8) = 0
x = 6 or x = - 8 (rejected, length cannot be negative)
x = 6
2x + 4 = 2(6) + 4 = 16
The length is 16 feet and the width is 4 feet
Final answer:
To find the dimensions of the barn's wall, we set up the equation w x (2w + 4) = 96 and solved for w to find the width is 8 feet. Then, we used the width to find the length, which is 20 feet.
Explanation:
To solve the problem of finding the dimensions of the rectangular wall of the barn, we need to set up and solve an algebraic equation. Let's call the width of the wall w feet. According to the problem, the length is 4 feet longer than twice the width, so we can express the length as 2w + 4 feet.
The area of the rectangle is given by multiplying the length by the width. We know the area is 96 square feet, so our equation to solve is w × (2w + 4) = 96.
Expanding this equation gives us 2w^2 + 4w - 96 = 0. This is a quadratic equation that we can solve by factoring, completing the square, or using the quadratic formula.
Factoring the quadratic equation, we look for factors of -96 that add up to 4. These factors are 12 and -8. So, we can write our equation as (2w + 12)(w - 8) = 0.
Setting each factor equal to zero gives us two possible solutions for w: w = -6 or w = 8. Since width cannot be negative, we discard w = -6 and keep w = 8 feet. The length is then 2(8) + 4 = 16 + 4 = 20 feet.
Therefore, the width of the barn's wall is 8 feet, and the length is 20 feet.
. (02.02 HC) Dominic earns $18 an hour plus $25 an hour for every hour of overtime. Overtime hours are any hours more than 35 hours for the week. Part A: Create an equation that shows the amount of money earned, E, for working x hours in a week when there is no overtime. (3 points) Part B: Create an equation that shows the amount of wages earned, T, for working y hours of overtime. Hint: Remember to include in the equation the amount earned from working 35 hours. (3 points) Part C: Dominic earned $730 in 1 week. How many hours (regular plus overtime) did he work? Show your work. (4 points) (10 points)
Answers
Let
E-----------> the amount of money earned
x----------> hours working in a week-----> $18 an hour
we know that
E=18x ---------> equation that shows the amount of money earned for working x hours in a week
conditioned to x<= 35 hours--------> is no overtime
Part B)
Let
T----------------> the amount of money earned
y -------------- > hours of overtime-------> $25 an hour
for x=35 hour----------> E=18*35=$630
T=630+25y------> equation that shows the amount of wages earned for working y hours of overtime and 35 hour in a week
Part C)
if Dominic earned $730 in 1 week
$630------------> earned for working 35 hours in a regular week
[hours of overtime]=(730-630)/25=100/25=4 hours
[total hours worked]=35+4=39 hours
the answer is 39 hours (35 hours regular +4 hours overtime)
The height and radius of a right cylinder are each 8 cm. what is its volume
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Consider the quadratic equation. x^2=4x-5. How many solutions does the equation have? a.) one real solution b.) two real solutions c.)no real solutions d.)cannot be determined