Answers
Explanation:
The expression: tu - 3r
where r=1, s=3, t=3, and u=10
[tex]\begin{gathered} =\text{ 3(10) - 3(1)} \\ =\text{ 30 - 3 } \\ =\text{ 27} \\ tu\text{ -3r = 27} \end{gathered}[/tex]Related Questions
If Ariana writes 6 pages in 2 minutes in a 50-page novel, what is the constant of proportionality, unit rate in one minute?
Answers
Let k be the constant of proportionality
Let p be the number of pages
Let t be the time taken
P ∝ t
p = kt
K = p/t
k = 6/2 = 3/1
The unit rate is 3 pages in one minute
Can I get a in depth explanation to simplifying non perfect roots with quotients? Ex: image
Answers
To get the answer, we will attempt to simplify the first expression into its simplest format.
[tex]\sqrt[]{\frac{126xy^5}{32x^3}}[/tex]We begin by dividing both the numerator and the denominator by 2:
[tex]\sqrt[]{\frac{63xy^5}{16x^3}}[/tex]Since x appears in both the numerator and the denominator, we can simplify such that
[tex]\frac{x}{x^3}=\frac{1}{x^2}[/tex]Hence, we have the expression to be
[tex]\sqrt[]{\frac{63y^5}{16x^2}}[/tex]Let us compare the both expressions to each other now:
[tex]\sqrt[]{\frac{63y^5}{16x^2}}=\sqrt[]{\frac{63y^5}{ax^b}}[/tex]Therefore,
[tex]\begin{gathered} a=16 \\ b=2 \end{gathered}[/tex]What is the approximate slope of the curve with equation-atx=1.2?
a) -25
b) -1/25
c) 25
d) 1/25
Answers
The most appropriate choice of slope of a curve will be given by
Slope of the curve at x = 1.2 = -25
First option is correct
What is slope of a curve?
Slope of curve at a point is the tan of the angle that the tangent to the curve at that point makes with the positive direction of x axis.
Here,
f(x) = [tex]\frac{1}{x - 1}[/tex]
[tex]f^{'}(x) = \frac{d}{dx} (\frac{1}{x-1})[/tex]
= [tex]-(x -1)^{-2}[/tex]
= [tex]-\frac{1}{(x-1)^2}[/tex]
At x = 1.2,
Slope = [tex]f^{'}(1.2) = -\frac{1}{(1.2 - 1)^2}[/tex]
= -[tex]\frac{1}{0.04}[/tex]
= -25
First option is correct
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The following table represents a linear function. use the value in the tables to find the slope of the line.
Answers
36 - 8 = 28
8 - 4 = 4
The slope of the line is 28/4, which reduces to 7. The missing value, if needed, is 22.
The mean number of blue m&m's in a fun size bag is 3.4 with a standard deviation of .2. What is the probability of getting more than 4 blue
m&m's in a bag? Write your answer as a percentage. Do NOT include the percentage sign
Answers
If the mean number of blue m&m's in a fun size bag is 3.4 with a standard deviation of .2. The probability of getting more than 4 blue m&m's in a bag is 0.00135.
How to determine the probability?Given data:
Mean = 3.4
Standard deviation = .2
Now let find or determine the z-score before finding the probability of getting more than 4 blue
Z = 4 blue - mean / standard deviation
Hence,
Z = 4 - 3.4 / .2
Z = 0.6 / .2
Z = 3
The probability was determine using the normal distribution table
P(x > 4) = P( Z=3)
= 0.00135
Therefore we can conclude that the probability is 0.00135.
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Lakita’s dad was teaching her about the stock He has 100 shares of Company A stock valued at $45 a share and 250 shares of Company B stock valued at $22 a share. How much is his stock worth?
Answers
Step-by-step explanation:
Lanna's dad stock worth will be the value of the total shares in both company A and company B.
Value of stock in company A = 100 × $45 = $4500
Value of stock in company B = 250 × $22 = $5500
Total stock worth = $4500 + $5500 = $10,000
A red die is tossed and then a green dieis tossed. What is the probability thatthe red die shows an even number orthe green die shows an even number?Make sure your answer is reduced.3[?]Hint: The two events are not mutually exclusive. Soto the find the probability of the union, use:P(A or B) = P(A) + P(B) - P(A and B)L
Answers
Given:
A red die is tossed and then a green die is tossed.
Required:
We have to find the probability that the red die shows an even number or the green die shows an even number.
Explanation:
Let A denotes the event that the red die shows an even number and B denote the event that the green die shows an even number.
Here the total number of outcomes is 6(1-6) and the number of favorable outcomes are 3(2, 4, 6).
Then we have
[tex]\begin{gathered} P(A)=\frac{3}{6}=\frac{1}{2} \\ \\ P(B)=\frac{3}{6}=\frac{1}{2} \end{gathered}[/tex]Therefore,
[tex]P(A\text{ and }B)=\frac{1}{2}\times\frac{1}{2}=\frac{1}{4}[/tex]Hence the probability that the red die shows an even number or the green die shows an even number is
[tex]\begin{gathered} P(A\text{ or }B)=P(A)+P(B)+PA(A\text{ and }B) \\ \\ =\frac{1}{2}+\frac{1}{2}-\frac{1}{4} \end{gathered}[/tex][tex]\begin{gathered} =1-\frac{1}{4} \\ =\frac{3}{4} \end{gathered}[/tex]Final answer:
Solve in simplest form
3x(9/8)
Answers
Answer:
27x/8
Step-by-step explanation:
3*9/8
3x*9/8
27x/8
Determine the constant of proportionality for the relationship.
p equals 2 over 150
p = 0.0133
p = 75
p = 150
Answers
The constant of proportionality is 0.0133
How to determine the constant of proportionality?From the question, the given parameters are
Relationship: p = 2 over 150 q
Rewrite the expression properly
So, we have
p = 2/150q
The above parameters can be represented as the following points
(p, q) = (150, 2)
The constant of proportionality of the points is then calculated as
k = q/p
Substitute the known values in the above equation
So, we have the following equation
k = 2/150
Evaluate the quotient in the above expression
So, we have
k = 0.0133
Hence, the relationship has a constant of proportionality of 0.0133
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what's the velocity of a sound wave traveling through Air at a temperature of 20 degrees Celsius
Answers
The velocity of a sound wave as a function of the temperature of the air is given by the equation
[tex]V=331+\text{0}.6\cdot T[/tex]Where T is the temperature in degrees celsius.
Using this equation, calculate the velocity of a sound wave at 20 degrees Celsius:
[tex]V=331+0.6\cdot20=331+12=343[/tex]Answer: the velocity is 343 m/s
Find the complex zeros of the following polynomial function and write F in factored form.
Answers
Answer:
The complex zeros are:
[tex]\begin{gathered} x_1=-2i \\ x_2=2i \end{gathered}[/tex]The factored polynomial is:
[tex]f(x)=(x-1)(x-3)(x^{2}+4)[/tex]Step-by-step explanation:
Factoring the polynomial, we'll have:
[tex]f(x)=(x-1)(x-3)(x^2+4)[/tex]To find the complex zeroes, let's solve for the quadratic term as following:
[tex]\begin{gathered} x^2+4=0 \\ \rightarrow x^2=-4 \\ \rightarrow x=\pm2i \end{gathered}[/tex]Having trouble finding an explanation to put into the boxes.
Answers
Given:
A regular hexagon inside a circle with a radius of 2 inches.
1)
Two radii are drawn to two consecutive vertices of the regular hexagon to form a central angle whose measure can be found based on the rotational symmetry of the figure.
Yes, Agree, because the rotational symmetry of the hexagon is 6. To find the measure of each central angle, divide 360° by 6. The central angle is 60 degrees.
2)
The hexagon can be decomposed by 6 congruent isosceles triangles.
Agree, because the angles of each of the triangles are 60 degrees.
Each of the 6 triangles is an isosceles because the sides are the radii of the same circle.
3).
The length of the altitude of each of these 6 congruent triangles can be found using trigonometry.
Agree, because an attitude split the triangle into two equals 30-60-90 triangles. The side of the original equilateral triangle is the hypotenuse of the 30-60-90 triangle.
The adjacent side is attitude and the hypotenuse is 2 inches with an angle is 30 degrees.
Use the cosine formula.
[tex]Cos\theta\text{ =}\frac{Adjacent\text{ side}}{Hypotenuse}[/tex][tex]cos30^o=\frac{Altitude}{2}[/tex][tex]2cos30^o=Altitude[/tex][tex]2\times\frac{\sqrt{3}}{2}=Altitude[/tex][tex]\text{ The length of altitude}=\sqrt{3}\text{ inches.}[/tex]The length of the altitude of each of these 6 congruent triangles is a sqaure root of 3 inches.
Please help me i gotta finish this or else I fail
Answers
----------------------------------------------------------------------------------------------------------------
(a)(i)
To evaluate f(4), we take the functional value at x = 4.
Looking at the graph, it is:
At x = 4, y = 2 [counting units]
Thus,
[tex]f(4)=2[/tex](a)(ii)To evaluate f(-3), we take the functional value at x = -3.
Looking at the graph, it is:
At x = -3, y = -5 [counting units]
Thus,
[tex]f(-3)=-5[/tex](b)The zeros are the x-intercepts of a graph. Looking at the graph, the x-axis cutting points are:
Zeros
[tex]x=2,x=-5[/tex](c)The function f(x) is increasing where the slope of the graph is positive.
Looking at the graph, the increasing part is from x = -3 to x = 5.
That is
- 3 < x < 5
The correct choice is (2).
(d)The relative minimum is the lowest point of the graph shown and the relative maximum is the highest point of the graph.
Looking at the graph,
The lowest point occurs at --- (-3, -5)
The highest point occurs at --- (-7, 5)
So,
Relative Maximum: (-7, 5)
Relative Minimum: (-3, -5)
(e)We want the interval in which f(x) < 0.
This means where the function is less than zero, or below the x-axis.
Looking at the graph,
from x = -5 to x = 2, the graph of f(x) is below the x-axis.
That is -5 < x < 2.
The correct choice is (3).
(f)A new function --
[tex]g(x)=2f(x)+5[/tex]Let's evaluate g(0) by using the formula:
[tex]g(0)=2f(0)+5[/tex]From the graph, f(0) = -2, thus,
g(0) = 2(-2) + 5
g(0) = -4 + 5
g(0) = 1
This means that the functional value of 'g' is 1 at x = 0.
(g)
A new function --
[tex]h(x)=x^3-3[/tex]We need to find g(h(2)). Let's boil it down to the function f(x).
[tex]\begin{gathered} h(x)=x^3-3 \\ h(2)=2^3-3 \\ \therefore h(2)=5 \\ \text{Now, we need g(5).} \\ g(x)=2f(x)+5 \\ g(5)=2f(5)+5 \\ g(5)=2(3)+5 \\ g(5)=6+5 \\ g(5)=11 \\ \text{ Final answer:} \\ g(h(2))=11 \end{gathered}[/tex]Thus, the answer is:
[tex]g(h(2))=11[/tex]Graph the line y= −5/2x + 2, then name the slope and y-intercept by looking at the graph.
Answers
ANSWER and EXPLANATION
We want to graph the given function:
[tex]y=-\frac{5}{2}x+2[/tex]To do that, we have to find two points that lie on the line.
Let us solve for y when x is 0 and 2.
When x = 0:
[tex]\begin{gathered} y=-\frac{5}{2}(0)+2 \\ y=0+2 \\ y=2 \end{gathered}[/tex]When x = 2:
[tex]\begin{gathered} y=-\frac{5}{2}(2)+2 \\ y=-5+2 \\ y=-3 \end{gathered}[/tex]Now, we have two points to plot the line: (0, 2) and (2, -3)
Let us plot the graph:
From the graph, we see that the slope of the graph is:
[tex]m=-\frac{5}{2}[/tex]and the y-intercept is:
[tex]b=2[/tex]Bryson's cat had six kittens this summer. Each kitten weighs 5 1/3 ounces. How much did all the kittens weigh together?
Answers
Each kitten weighs 5 1/3 ounces. Converting this weight to improper fraction, it becomes
16/3 ounces
Since the total number of kittens is 6, the weight of all the kittens is
16/3 * 6 = 32 ounces
The total weight is 32 ounces
What is the area in square feet of the lawn ?
Answers
Given:
Find-:
Area of shape
Explanation-:
The area of a rectangle is:
[tex]\text{ Area }=\text{ Length }\times\text{ Width}[/tex]The shape is:
For the first region:
[tex]\begin{gathered} \text{ Length }=80 \\ \\ \text{ Width }=40 \end{gathered}[/tex]The area of the first region is:
[tex]\begin{gathered} \text{ Area }=\text{ Length}\times\text{ Width} \\ \\ =80\times40 \\ \\ =3200\text{ ft}^2 \end{gathered}[/tex]The area of the second region is:
[tex]\begin{gathered} \text{ Length }=80-60 \\ \\ \text{ Length }=20 \\ \\ \text{ Width }=60 \end{gathered}[/tex]The area of the second region is:
[tex]\begin{gathered} \text{ Area }=\text{ Length}\times\text{ Width} \\ \\ \text{ Area }=20\times60 \\ \\ \text{ Area }=1200\text{ ft}^2 \end{gathered}[/tex]The total area of the lawn is:
[tex]\begin{gathered} \text{ Area }=3200\text{ ft}^2+1200\text{ ft}^2 \\ \\ \text{ Area }=4400\text{ ft}^2 \end{gathered}[/tex]The area of lawn is 4400 ft²
A customer recelves a discount on each purchase. If thecustomer's bill is $1,600 before the discount and the bill is $1,460after the discount what is the percent discount?O A) 8.8%B) 9.5%C) 11.4%D) 91.3%searchC
Answers
The customer's bill before the discount is $1600.
The customer's bill after the discount is $1460.
Determine the discount on the customer's bill.
[tex]\begin{gathered} D=1600-1460 \\ =140 \end{gathered}[/tex]The discount is applied on the customer's bill before the discount. Let the percent discount is d%.
Determine the discount percent on the customer bill.
[tex]\begin{gathered} \frac{d}{100}\cdot1600=140 \\ d\cdot16=140 \\ d=\frac{140}{16} \\ =8.75 \\ \approx8.8 \end{gathered}[/tex]So percent discount is 8.8%.
the square of a number y subtracted by 1
translate english phrase to mathematical expression
Answers
Answer: y^2 - 1 or y^2 - 2y + 1
Step-by-step explanation:
I assume you mean do the square of y and not (y - 1).
The squared of y is, well, y^2
So, the answer is y^2 - 1.
However, if you meant (y - 1) ^2 you will end up with y^2 - 2y + 1
Seven movie tickets to a movie cost $50.75. What constant of proportionality relates the number of tickets and total cost?
Group of answer choices
$7
$7.25
$7.75
$7.50
Answers
Drag the tiles to the boxes to form correct pairs.Consider functions fand g.(1) = 1 - 12g(x) = VII – 45Evaluate each combined function, and match it to the corresponding value.0VISV3 - 3-303(9.5) (2)(+) (2)(9 - 1)(-1)(-1)
Answers
We have the following functions:
[tex]\begin{gathered} f(x)=1-x^2, \\ g(x)=\sqrt[]{11-4x}\text{.} \end{gathered}[/tex]1) We evaluate (g · f)(2):
[tex](g\cdot f)(2)=g(2)\cdot f(2)=\sqrt[]{11-4\cdot2})\cdot(1-2^2)=-3\cdot\sqrt[]{3}\text{.}[/tex]2) We evaluate (g + f)(2):
[tex](g+f)(2)=g(2)+f(2)=(\sqrt[]{11-4\cdot2})+(1-2^2)=\sqrt[]{3}-3.[/tex]3) We evaluate (g - f)(-1):
[tex](g-f)(-1)=g(-1)-f(-1)=\sqrt[]{11-4\cdot(-1)}-(1-(-1)^2)=\sqrt[]{15}\text{.}[/tex]4) We evaluate (f / g)(-1):
[tex](\frac{f}{g})(-1)=\frac{f(-1)}{g(-1)}=\frac{(1-(-1)^2)}{\sqrt[]{11-4\cdot(-1)}}=\frac{0}{4}=0.[/tex]Answers
[tex]\begin{gathered} (g\cdot f)(2)=-3\cdot\sqrt[]{3} \\ (g+f)(2)=\sqrt[]{3}-3 \\ (g-f)(-1)=\sqrt[]{15} \\ (\frac{f}{g})(-1)=0 \end{gathered}[/tex]Andrew buys 975 green peppers and 1,250
hot chili peppers. He uses all of those
peppers to make two types of sauce.
part A
Write a system of equations that shows how
Andrew can use the peppers to make x pints
of Sauce I and y pints of Sauce II.
Answers
The system of equation is given by
x + y = 975
x + y = 1250
What is system of equation?
Systems of equations are sets of equations where the solution is the intersecting point (s) between the equations. Most of the systems of equations you see in algebra are sets of two linear equations in the standard form Ax + By = C.
Andrew buys :
green peppers = 975
hot chilli peppers = 1,250
Part A
He uses green peppers (975) to make,
x pints of Sauce I
y pints of Sauce II
So, equation will be,
=> x + y = 975 .........(i)
Simillarly he uses hot chilli peppers (1,250) to make,
x pints of Sauce I
y pints of Sauce II
So, 2nd equation will be,
=> x + y = 1,250 .........(ii)
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B725с24АFind sin(a) in the triangle.
Answers
The sine of an angle on a right triangle is the ratio of the side opposite to that angle divided by the hypotenuse of the triangle.
The side opposite to alpha, is BC, while the hypotenuse is BA. Then:
[tex]\sin (\alpha)=\frac{BC}{BA}[/tex]Substitute the values of BC and BA to find the sine of alpha:
[tex]\sin (\alpha)=\frac{7}{25}[/tex]all you need is on the photo please just give me the answer don't do step-by-step is so confusing is homework
Answers
You have the following function:
f(x) = x² - x
- In order to determine the vertex of the function, consider that for the general form of a quadratic function:
f(x) = ax² + bx + c
the value of x at the vertex is:
x = -b/2a
for the given function you have a = 1, b = -1, c =0:
x = -(-1)/2(1) = 1/2 = 0.5
next, replace the previous value of x into the function:
f(1/2) = (1/2)² - (1/2) = 1/4 - 1/2 = -1/4 = -0.25
Hence, the vertex is (0.5 , -0.25)
- The axis of symmetry is the value of x atthe vertex:
x = 0.5
- The x-intercepts are the zeros of the function:
x² - x = 0 by factorizing
x(x - 1) = 0
Then, the zeros are:
x =0
x = 1
Hence, the x-intercepts are x=0 and x=1
- Due to the coefficient a is positive and the term ax² is the dominant term, this curve has a minimum. This minimum is the vertex (0.5 , -0.25)
- The minimum value of the function is -0.25
- The y-intercept is the value of y when x=0:
f(0) = 0² - 0 = 0
true or false3. The expression 78 − 22 + − 4 is a polynomial of degree 8
Answers
The expression is:
[tex]7x^8-2x^2+x-4^{}[/tex]In general, a polynomial has the form:
[tex]a_nx^n+a_{n-1}x^{n-1}+\cdots+a_1x+a_0,a_n\ne0[/tex]And we say that the polynomial is the degree n.
In our expression. a_n=7 and that is not equal to zero. Then, the expression is of degree 8 since a_n=7=a_8. The answer is true.
Multiple Questions: Evaluate the Expressions:[tex]( - 4)^{2} [/tex][tex] - 8^{2} [/tex][tex] - 5^{2} \times 4[/tex]
Answers
Answer:
(a)16 (b)-64 (c)-100
Explanation
Part A
[tex]\begin{gathered} (-4)^2=(-1\times4)^2 \\ =(-1)^2\times4^2 \\ =1\times16 \\ =16 \end{gathered}[/tex]Part B
[tex]\begin{gathered} -8^2=-1\times8^2 \\ =-1\times64 \\ =-64 \end{gathered}[/tex]Part C
[tex]\begin{gathered} -5^2\times4 \\ =-1\times5^2\times4 \\ =-1\times25\times4 \\ =-100 \end{gathered}[/tex]If a shape is dilated by a scale factor of 3, what is the resulting perimeter? A.)The new perimeter is 9 times larger than the preimageB.)The same as theperimeter of thepreimageC.)The new perimeter is 4 times the originalD.)The new perimeteris 3 times largerthan the preimage
Answers
The perimeter of the figure is sum of the side of the figure. If figure is dilated by factor of 3, means that each side of the figure is dilated by 3.
The addition of dilated side to obtain the perimeter results in 3 times the original perimeter.
So new perimeter is 3 times larger than the preimage. Option D is correct.
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O LINES
Finding the slopes of horizontal and vertical lines
Fill in the blanks below.
Find the slope of the line passing through the points (-4, 7) and (-4, -8).
slope:
Find the slope of the line passing through the points (-7, -3) and (8, -3).
slope:
Answers
Use the table below. I don’t know how to do ordered pairs I forgot.
Answers
Solution
To write in ordered pairs is to arrange it in the form of x and y values
The ordered pairs are
[tex]\begin{gathered} (5.0,4.20) \\ (6.0,5.05) \\ (7.0,5.90) \\ (8.0,6.75) \end{gathered}[/tex]the sum of a number and six is less than the sum of three times the number and ten. Write an inequality
Answers
The correct answer or an inequality is x+6 < 3x + 10.
What is an inequality equation in mathematics?
An inequality in mathematics is said to be a relation that compares two numbers or other mathematical expressions in an unequal way. The most frequent application is said to size-compare two numbers on a number line.
Many straightforward inequalities can be resolved by adding, taking away, multiplying, or dividing both sides until the variable is all that remains.
However, these factors will shift the direction of inequality:
1. By using a negative number to multiply or divide both sides
2. Reversing the left and right sides.
Let the number be x. It is given in the question that the sum of a number and six is less than the sum of three times the number and ten.
According to the question,
x+6 < 3x + 10
Hence, the correct answer is x+6 < 3x + 10.
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find the exact area of a sector if the radius of the circle is 4 cm, and the angle of the sector is π radian.
Answers
Area of sector = 8π cm²
Explanation:For angle in degrees:
Area of sector = θ/360 × πr²
For angle in radians:
Area of sector = 1/2 r²θ
radius = 4 cm
angle of the sector = π radian
Area of sector = 1/2 × (4)² × π = 16/2 × π
Area of sector = 8π cm²
