Answer:
Make all fractions have the same common denominator, and you will find that 3/8 is the smallest value.
Step-by-step explanation:
Solve for the variable in the following equation: |1/3y-7|=|2/5y+5|
Answer:
y = {-180, 2 8/11}
Step-by-step explanation:
I like to solve these using a graphing calculator. I generally start by writing the equation in the form ...
f(y) = 0
This can be done by subtracting the right-side expression from both sides. The solution will be the horizontal intercepts of the graph:
y = -180; y = 2 8/11
__
To solve this analytically, you need to recognize that this resolves into four equations, effectively two identical pairs. Each equation comes with a set of conditions (domain) for which it is applicable. Here is the expanded set of equations:
1/3y -7 = 2/5y +5 . . . both positive: 1/3y -7 ≥ 0 and 2/5y + 5 ≥ 0
7 -1/3y = 2/5y +5 . . . left side negative: 1/3y -7 ≤ 0 and 2/5y +5 ≥ 0
1/3y -7 = -2/5y -5 . . . right side negative: 1/3y -7 ≥ 0 and 2/5y +5 ≤ 0
7 -1/3y = -2/5y -5 . . . both sides negative: 1/3y -7 ≤ 0 and 2/5y +5 ≤ 0
__
The conditions resolve to ...
1/3y -7 ≥ 0
y -21 ≥ 0 . . . . . multiply by 3
y ≥ 21 . . . . . . . add 21
and ...
2/5y +5 ≥ 0
y +25/2 ≥ 0 . . . . multiply by 5/2
y ≥ -25/2 . . . . . subtract 25/2
Now, we are in a position to solve the equations and determine where the solution is applicable.
__
both positive
The domain will be y ≥ 21 and y ≥ -25/2, which is y ≥ 21.
Multiplying the equation by 15 gives ...
5y -105 = 6y +75
y = -180 . . . . . . . . . subtract 5y+75
This solution is not in the allowed domain.
__
left side negative
The domain will be y ≤ 21 and y ≥ -25/2, which is -25/2 ≤ y ≤ 21.
Multiplying the equation by 15 gives ...
105 -5y = 6y +75
30 = 11y . . . . . . . . . add y-75
y = 30/11 . . . . . . the solution is in the allowed domain
__
right side negative
The domain will be y ≥ 21 and y ≤ -25/2. This is the empty set.
__
both sides negative
The domain will be y ≤ 21 and y ≤ -25/2, which is y ≤ -25/2.
Multiplying the equation by 15 gives ...
105 -5y = -6y -75
y = -180 . . . . . . . . . . add 6y-105 . . . . the solution is in the allowed domain
__
Solutions to this equation are ...
y = 30/11 = 2 8/11
y = -180
A marketing manager for a cell phone company claims that the percentage of children aged - who have cell phones differs from . In a survey of children aged - by a national consumers group, of them had cell phones. Can you conclude that the manager's claim is true
Answer:
Yes, the marketing manager's claim is true.
Step-by-step explanation:
p = 0.61
Phat = 545 /826 = 0.66
H0 : p = 0.61
H1 : p ≠ 0.61
The test statistic :
(Phat - p) / √pq/n
q = 1 -p = 1 - 0.61 = 0.39
(0.66 -0.61) / √(0.61*0.39)/826
0.05 / 0.0169709
Test statistic = 2.95
Using the p-value from Zscore calculator:
Pvalue at 2.95, two tailed ;
Pvalue = 0.0032
Reject H0; if Pvalue < α
Since, Pvalue < α ; Then, the marketing manager's claim is true
A metalworker has a metal alloy that is 15% copper and another aloy that is 60% copper. How many kilograms of each alloy should the metalworker combine to create 100 kg of a 51% copper alloy?
The metalworker should use ____ kilograms of the metal alloy that is 15% copper and ____ kilograms of the metal alloy that is 60% copper.
N
What is the value of y?
O 3/3 units
9
6/3 units
у
U
3
0 9/3 units
12/3 units
T
6
M
The value of y is 6√3 unit.
Option B is correct.
What is Pythagoras theorem?The Pythagorean theorem, or Pythagorean theorem, illustrates the relationship between the three sides of a right-angled triangle. The square of the hypotenuse is equal to the sum of the squares of the other two sides of a triangle, according to the Pythagorean theorem.
From the given figure using Pythagoras theorem
H² = 6² - 3²
H² = 36 - 9
H² = 27
H = 3√3 unit
Now, again using Pythagoras theorem
y² = 9² + ( 3√3)²
y² = 81. + 27
y = √108
y = 6√3 unit
Thus, the value of y is 6√3 unit.
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10.64 - 8.5=
before you can subtract these two decimals what do you do
solve the equation 3x-13x-10=0 using completing the square method
The roots of the given quadratic equation are 5 and -4
What are quadratic equations?Quadratics are the polynomial equation which has the highest degree of 2. Also, called quadratic equations.
Given is an equation 3x²-13x-10 = 0, we need to solve by using completing the square method,
The given equation is =
3x²-13x-10 = 0
3(x²-13x/3-10/3) = 0
3(x²-2x·13x/6-10/3) = 0
Adding and subtracting (13/6)²
3(x²-2x·13x/6+(13/6)²-(13/6)²-10/3) = 0
3[(x-13/6)²-169/36-10/3] = 0
3[(x-13/6)²-289/36] = 0
(x-13/6)²-289/36 = 0
(x-13/6)² = 289/36
Taking roots,
x-13/6 = ±17/6
x = 17/6+13/6
x = 5
Or,
x = -17/6+13/6
x = -4
Hence, the roots of the given quadratic equation are 5 and -4
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differentiate t^4 In(8cost)
⇒It is way more appropriate if I use the product rule. That states that:
⇒f(x)g(x)=f'(x)g(x)+f(x)g'(x)
\(t^{4} In(8cos(t))\\=4t^{3}In(8cos(t))+t^{4} \frac{1}{8cos(t)} *(0cos(t)+8*(-sin(t))*1)\\=4t^{3}In(8cos(t))+\frac{t^{4}-8sin(t)}{8cos(t)}\)
Note:
Given F(x)=In(x)
⇒\(F'(x)=\frac{1}{x}\)
Goodluck
Answer:
t^3 (4 ln(cos8t) - t tant)
Step-by-step explanation:
Using the Product Rule:
dy/dt = t^4 * d(ln(8cost) / dt + ln(8cost) * d(t^4)/dt
= t^4 * 1/ (8cost) * (-8sint) + 4t^3 ln(8cost)
= -8t^4 sint / 8 cost + 4t^3 ln(8cost)
= -t^4 tan t + 4t^3 ln(8cost)
= t^3 (4 ln(cos8t) - t tant)
Simplify the expression by first substituting values from the table of exact values and then simplifying the resulting expression. Answer exactly. 4 sin 30 ∘ =
The expression is simplified to 2
How to determine the valueIt is important to note that the table of exact values for trigonometric identity differ with the particular identity in study.
From the table of exact values, we have that;
sin 15 = 0. 25
sin 30 = 0. 5000
sin 45 = 0. 7071
sin 60 = 0. 8600
sin 75 = 0. 9659
sin 90 = 1
To determine the value of the expression, we have to substitute the value of sin 30 as 0. 5000
4 sin 30°
⇒ 4 × 0. 5000
multiply through
⇒ 2
The value determined is 2
Thus, the expression is simplified to 2
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Given: circle P with diameter RS TW
prove: RTW is isosceles
Answer:
Step-by-step explanation:
First, the RS is perpendicular to TW. That is paired with "Given".
Then arc mTR = arc mRW. This is paired with, "Diameter perpendicular to a chord bisects major arcs".
After that, chord TR = chord RW. You'll pair this up with "If arcs are =, chords are =".
Finally you'll pair Triangle TRW is isosceles with "Definition".
RS perpindicular TW Given
m RT= m RW Diameter perpindicular to chord bisects major arcs
TR = TW If arcs are =, chords are =
TRW is issocolees Definition
The graph of the function rule that models the volume of the sphere has symmetry with respect to ____?
The correct option D: the origin, has the symmetry of the volume of sphere for the graph of the function rule.
Explain the term symmetry along origin?About the Origin: Symmetry. If a point appears on a graph at every time, then the graph is symmetric having respect to the origin. When seen in relation to the origin, this graph is symmetric.A function having a single term which is the sum of a real number, the coefficient, as well as a variable raised to something like a fixed real number is called a power function. (A coefficient is a number which multiplies a variable by an exponent.) Think of equations like area or volume as an illustration.For the stated question.
The volume of the sphere is modeled by the power function with respect to the radius as;
V = f(r) = 4/3πr³
As, r is independent of any of the coordinate axis.
Thus, the function rule's graph, which describes the volume of the sphere, is symmetric with regard to the origin.
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Solve for x in the equation x squared minus 12 x + 36 = 90.
Answer:
a
Step-by-step explanation:
edge 2021
Write 3.03, 2.75, 2.5, 0.96, 1.8, 3.21 in ascending order.
Answer:
0.96,1.8, 2.5, 2.75,3.03,3.21
Step-by-step explanation:
Max and Sasha exercise a total of 20 hours each week. Max exercises 15 hours less than 4 times the
number of hours Sasha exercises. The system of equations shown below represents this situation, where
x represents the number of hours Max exercises and y represents the number of hours Sasha exercises.
How many hours do Max and Sasha exercise per week?
(x + y = 20
x - 4y =-15
Max exercises
hours a week and Sasha exercises
hours a week.
Answer:
Max exercises 13 hours a week, and Sasha 7.
Step-by-step explanation:
To find the number of hours each of them exercises during the week, we solve the system of equations.
In the second equation:
\(x = 4y - 15\)
Replacing in the first equation:
\(x + y = 20\)
\(4y - 15 + y = 20\)
\(5y = 35\)
\(y = \frac{35}{5}\)
\(y = 7\)
So Sasha exercises 7 hours per week.
Max:
\(x + y = 20\)
\(x + 7 = 20\)
\(x = 13\)
Max exercises 13 hours a week.
how would someone use the cross product property on an equation with 3 different values instead of two? I provided an example image
Using the cross product for the proff of Pythagoras theorem, the correct step is
By the cross product property, AB² = BC multiplied by BD
What is cross product propertyThe cross product property is typically used to solve equations with two values, where the product of the extremes (the outer terms) is equal to the product of the means (the inner terms).
For the similar triangles, the ratio is as follows
BD / BA = BA / BC
BA² = BD * BC
and AB = BA, hence
BA² = BD * BC
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Solve the system of inequalities to decide if the point (-3,2) is part of the solution; y<=-4x-3, +8y>=7
Answer:
\((x,y) = (-3,2)\) is a solution
Step-by-step explanation:
Given
\(y \le -4x + 3\)
\(x + 8y \ge 7\)
Required
Determine if \((x,y) = (-3,2)\) is a solution
\(y \le -4x + 3\) becomes
\(2 \le -4 * -3 + 3\)
\(2 \le 15\) --- this is true
\(x + 8y \ge 7\)
\(-3+ 8 * 2 \ge 7\)
\(13 \ge 7\) --- this is also true
Hence,
\((x,y) = (-3,2)\) is a solution
Solve the inequality
Answer:
x ≥ -64
Step-by-step explanation:
"3/4ths of a number is greater than or equal to -48"
3/4 of a number ≥ -48
Let's say the number is x.
(3/4)x ≥ -48
Multiply both sides by 4.
3x ≥ -192
Divide both sides by 3.
x ≥ -64
no likes A runner completed 27 laps around the track in 43.2 minutes. If he kept the same pace for each lap, how many minutes did it take to complete 1 lap?
A.
1.23
B.
1.43
C.
1.5
D.
1.6
Step-by-step explanation:
27 laps.............43.2 minutes
1 lap................x minutes
cross multiply
27x=43.2
x=43.2÷27
=1.6
*
Question 2
If a calculator is sold for $15.95, then the revenue in dollars, R, generated by this item
is given by the formula R=15.959, where a represents the number of calculators sold.
Use the formula to determine the revenue generated by this item if 40 calculators are
sold.
Answer:
Answer is in the photo so you have so look in this give wribsite
determine whether x=1 and y=10 is a solution to the equations
\(x + 3 = 30 \\ \\ 2x - y = 9\)
Answer:
They are not solutions
Step-by-step explanation:
To see if it is correct we have to substitute the variables for the numbers given.
x+3=30
1+3≠30
2x-y=9
2·1-10≠9
So, these solutions would be incorrect.
1354.24 rounded to the nearest tenth
A store owner received 18 cases of soda. Each case has 24 cans of soda. The owner sells each can for $0.60. Which number sentence should you use to find how much money the owner will collect if he sells all the soda?
Answer:
Total money get from soda cans = $259.2
Step-by-step explanation:
Given:
Number of soda cases = 18
Number of soda can in each case = 24
Price of each soda can = $0.60
Find:
Total money get from soda cans
Computation:
Total money get from soda cans = Number of soda cases x Number of soda can in each case x Price of each soda can
Total money get from soda cans = 18 x 24 x 0.60
Total money get from soda cans = $259.2
Given: f(x) = 4.1 42 4x-10 x-2 Determine the x- and y-intercepts of f. 4.3 a x=2² Write f(x) in the form: f(x)=- + q. Draw the graph of f, clearly show the intercepts with the axes and the asymptotes.: 15. 44 Give the equations of the asymptotes of f(x) + 3.
f(x) = 4.1/(42.4x-10(x-2)), x-intercept = -4.878, y-intercept = (0,-2.05), asymptotes: vertical at x=2, horizontal at y=0, and slant at y=4.1/8x.
Given: f(x) = 4.1/(42.4x-10(x-2))
To find the x-intercept, we set f(x) to zero and solve for x:
0 = 4.1/(42.4x-10(x-2))
0 = 4.1/(32.4x+20)
0 = 4.1/4.08(x+4.878)
So, the x-intercept is x = -4.878.
To find the y-intercept, we set x to zero and solve for f(x):
f(0) = 4.1/(42.4(0)-10(0-2))
f(0) = -2.05
So, the y-intercept is (0,-2.05).
To write f(x) in the form f(x) = -1/(ax + b) + q, we can simplify the expression as follows:
f(x) = 4.1/(42.4x-10(x-2))
f(x) = 4.1/(32.4x+20)
f(x) = 4.1/4.08(8x+5)
So, a = 8, b = 5, and q = 4.1/4.08.
To draw the graph of f, we plot the x- and y-intercepts and the vertical asymptote x = 2.
We can find the horizontal asymptote by noting that as x becomes very large or very small, the term 10(x-2) dominates the expression, so f(x) approaches 4.1/-10x. Thus, the horizontal asymptote is y = 0.
To find the equations of the slant asymptotes, we divide the numerator by the denominator using long division:
4.1
8x + 5 | 4.1
- 4.1
0
So, the slant asymptote is y = 4.1/8x.
Therefore, the intercepts of f are x = -4.878 and (0,-2.05), and the equation of f(x) in the form f(x) = -1/(ax + b) + q is f(x) = -1/(8x + 5) + 1.0039.
The graph of f has intercepts with the x-axis at x = -4.878 and the y-axis at (0,-2.05), a vertical asymptote at x = 2, a horizontal asymptote at y = 0, and a slant asymptote at y = 4.1/8x.
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Prior Skill Review: Which ordered pair is a solution of the system 2x – y < 5 and 2 + 2y > 2?
Answer:
B) (3, 2)Step-by-step explanation:
Graph the inequalities and plot the points.
See attached.
As we see, the solution is the option B, point (3, 2). All the other points are either outside or on the dashed line.
Graph attached
Refer to the attachmentSecond one should be 2x+2y>2
Put the steps in correct order to prove that if n is a perfect square, then n +2 is not a perfect square. Rank the options below. Lets assume m 1. Assume n= m, for some nonnegative integer m. If m=0, then n + 2 = 2, which is not a perfect square. The smallest perfect square greater than n is (m + 1) Expand (m + 1)2 to obtain (m + 1)2 = m2 + 2m +1 = n + 2m +1> n +2 +1> n +2. Hence, n+ 2 is not a perfect square.
If n is a perfect square, then n +2 is not a perfect square, then The correct order is: 1, 2, 3, 4, 5, 6.
Given,
Assume n= m, for some non-negative integer m.
If m=0, then n + 2 = 2, which is not a perfect square.
The smallest perfect square greater than n is (m + 1)
Expand (m + 1)2 to obtain (m + 1)2 = m2 + 2m +1 = n + 2m +1
Simplify to n +2 +1> n +2.
Hence, n+ 2 is not a perfect square.
If n is a perfect square, then n +2 is not a perfect square, then
The correct order is: 1, 2, 3, 4, 5, 6.
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To solve the inequality 9x >-4, the inequality sign must be reversed.
True
OR
False
Answer:
false
Step-by-step explanation:
you only need to reverse the sign when you are dividing by a negative number
Answer: False?
Step-by-step explanation:
convert 24580 m into km with process
Answer:
24.58 km
Step-by-step explanation:
1 km = 1000 m
1 m = 1 / 1000 km
24580 m
= 24580 / 1000
= 24.58 km
The equation Y= X^2/2 - 8 and Y= 2X -2 are graphed below what are the solutions to the equation X^2/2 - 8 = 2X -2 
The equation X^2/2 - 8 = 2X - 2 has two solutions, X = 6 and X = -2. These are the values of X that satisfy the equation and make both equations Y = X^2/2 - 8 and Y = 2X - 2 intersect on the graph.
To find the solutions to the equation X^2/2 - 8 = 2X - 2, we need to set the two equations equal to each other and solve for X.
The equation is:
X^2/2 - 8 = 2X - 2
To simplify the equation, let's multiply both sides by 2 to eliminate the fraction:
X^2 - 16 = 4X - 4
Next, we rearrange the equation to have all terms on one side:
X^2 - 4X - 12 = 0
Now, we can solve this quadratic equation by factoring, completing the square, or using the quadratic formula. Let's use factoring in this case:
(X - 6)(X + 2) = 0
Setting each factor equal to zero gives us two possible solutions:
X - 6 = 0 --> X = 6
X + 2 = 0 --> X = -2
So the solutions to the equation X^2/2 - 8 = 2X - 2 are X = 6 and X = -2.
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The boiling point of water is 212°F at sea level. Andres lives at an elevation of
7500 ft and finds that water boils at 198°F, What is the percent decrease in
the boiling point of water from sea level to 7,500 ft? Give your answer to the
nearest tenth of a percent. Show your work.
The percent decrease in the boiling point of water from sea level to 7,500 feet is equal to 18.7%.
What is a percentage?In Mathematics, a percentage simply refers to any number that is expressed as a fraction of hundred (100). This ultimately implies that, a percentage indicates the hundredth parts of any given number.
In order to determine the percent decrease in the boiling point of water from sea level to 7,500 feet, we would determine the difference in temperature as follows;
Difference in temperature = 212°F - 198°F
Difference in temperature = 14°F
Percentage decrease = 14/7500 × 100
Percentage decrease = 0.00187 × 100
Percentage decrease = 18.7%.
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In a bag of marbles, 12% were red, 16% were blue, and the rest are white. If the bag has 250 marbles how many were red or blue
Answer: 70
Step-by-step explanation: First, let's find how many are worth each in numbers. Use this formula:
Part Percent * Whole number / 100
Plug in the numbers:
Red = 12 * 250 / 100
3000/100
= 30 red marbles
Blue = 16* 250 / 100
4000 / 100
= 40 blue marbles
40 + 30 = 70
White = 250 - 70
= 180 white marbles
We can check our answer by adding 12 + 16. That's 28. So by multiplying 250 by 28, we get 7000. 7000 divided by 100 = 70
70 = 70
Therefore, both statements are true
I hope this helped!
A trawler A is 40km west of another trawler B. A set off at 20kmh travel at 25kmh. What course should trawler B take to intercept trawler A
Trawler B should take a course that is 18 degrees east of north.
How to explain the angleIn order to intercept Trawler A, Trawler B must travel in a direction that will bring it closer to Trawler A. Since Trawler A is traveling due west, Trawler B must travel in a direction that is east of north. The angle that is 18 degrees east of north will bring Trawler B closest to Trawler A.
Here are the steps to find the course that Trawler B should take:
Draw a diagram of the situation.
Label the two trawlers A and B.
Draw a line representing the direction that Trawler A is traveling.
Draw a line representing the direction that Trawler B should travel.
Measure the angle between the two lines.
The angle between the two lines will be 18 degrees. Therefore, Trawler B should take a course that is 18 degrees east of north.
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