= -2? i dont really know either
Answer: 2
Step-by-step explanation:
-6-4=-10 -10/-5=2
Given the function f(x) = 2x + 6/x^2 + 5x + 6 , evaluate the function with the domain values {-3, -2, 0, 2, 3}. What is the valid domain of this function? Show all work.
Answer:
domain; x<0 or x>0
Step-by-step explanation:
We have been given the following function;
f(x) = 2x + 6/x^2 + 5x + 6
We need to evaluate the values of f(x) for the following domain values;
{-3, -2, 0, 2, 3}
f(-3) = 2(-3) + 6/(-3)^2 + 5(-3) + 6
= -43/3
f(-2) = 2(-2) + 6/(-2)^2 + 5(-2) + 6
= -6.5
f(0) = 2(0) + 6/(0)^2 + 5(0) + 6
= undefined
f(2) = 2(2) + 6/(2)^2 + 5(2) + 6
= 21.5
f(3) = 2(3) + 6/(3)^2 + 5(3) + 6
= 83/3
The function is real and defined for every value of x in its domain except where x = 0 . This is a point of discontinuity.
Find the attachment below;
Ruth bought cutter s and screwdrivers to upgrade the computers in her company. A cutter costs 15.2$ and a screw driver costs $2. She bought a total of 29 tools and spent 150.40$. how many of each tool did ruth buy?
solve it with a system
x=screwdriver
y=cutter
x+y=29
2x+15.2y=150.40
PLEASE ANSWER RIGHT AWAY
Second from top down
what is this simplified?
Answer:
2 time 5 squared is simplified form of 60 they both get the end result of 7.4
Step-by-step explanation:
Answer:
The correct answer is second option
2√15
Step-by-step explanation:
From the attached question we can see that,
√60
To find the value of √60
We know that, 60 = 4 * 15
and √4 = 2
Therefore √60 can be written as,
√60 = √(4 * 15)
= 2√15
The correct answer is 2√15
Therefore the correct option is second option.
√60 = 2√15
What’s y (Solve and show work): 3(y-2)= -21
I attached an image doing it out
Answer:
y = -5
Step-by-step explanation:
Equation:
3( y - 2 ) = -21
3y - 6 = -21
3y = -21 + 6
3y = -15
y = [tex]\frac{-15}{3}[/tex]
y = -5
Which of the following is a solution of y > |x| - 6?
(-5, 1)
(-1, -5)
(5, -1)
ANSWER
(-5,1) is the correct answer
EXPLANATION
The given inequality is:
[tex]y \: > \: |x|- 6[/tex]
If any point satisfies this inequality, then it is a solution.
We need to substitute each point into the given inequality.
We substitute (-5,1) to get:
[tex]1\: > \: | - 5|- 6 \implies1\: > \: - 1[/tex]
This statement is true. Hence (-5,1) is a solution.
For (-1,-5), we have
[tex] - 5\: > \: | - 1|- 6 \implies - 5\: > \: - 5[/tex]
This is false.
For (5,-1), we have
[tex] - 1\: > \: | 5|- 6 \implies - 1\: > \: - 1[/tex]
This is also false.
Answer:
(-5,1) is the correct answer
What is the relationship between the volume and surface area of the sphere shown?
a. V < SA
b. V = SA
c. V > SA
Will give brainliest!
Answer:
B
Step-by-step explanation:
V=4/3 x 3.14 x 3^3
V= 113.04
SA= 4 x 3.14 x 3^2
SA= 113.04
Answer:
The answer is V=SA
Step-by-step explanation:
V=4/3 x 3.14 x 3^3
V= 113.04
SA= 4 x 3.14 x 3^2
SA= 113.04
So the relationship should be V=SA, because the equaled amount on both ends was the same.
could I get some help in here
Answer:
98 ft²
Step-by-step explanation:
There are a couple of ways you can think about this one. Perhaps easiest is to treat it as a square with a triangle cut out of it. The cutout triangle has a base (across the top) of 14 ft and a height of 14 ft, so its area is ...
A = (1/2)(14 ft)(14 ft) = 98 ft²
Of course the area of the square from which it is cut is ...
A = (14 ft)² = 196 ft²
So, the net area of the two triangles shown is ...
A = (196 ft²) - (98 ft²) = 98 ft²
_____
Another way to work this problem is to attack it directly. Let the base of the left triangle be x. Then the base of the right triangle is 14-x, and their total area is ...
A = A1 + A2 = (1/2)(x ft)(14 ft) + (1/2)((14-x) ft)(14 ft)
We can factor out 7 ft to get ...
A = (7 ft)(x ft + (14 -x) ft)
A = (7 ft)(14 ft) = 98 ft²
log based question, i just need help with parts b and c
Answer:
b) There is translation 3 units to the right and 1 unit up
c) The domain is {x I x > 3}
The equation of the asymptote is x = 3
Step-by-step explanation:
* Lets revise the rule of the translation
- If the function f(x) translated horizontally to the right
by h units, then the new function g(x) = f(x - h)
- If the function f(x) translated horizontally to the left
by h units, then the new function g(x) = f(x + h)
- If the function f(x) translated vertically up
by k units, then the new function g(x) = f(x) + k
- If the function f(x) translated vertically down
by k units, then the new function g(x) = f(x) – k
* Now lets solve the problem
b) ∵ f(x) = [tex]log_{2} (x-3)+1[/tex]
∵ The parent function is [tex]log_{2} x[/tex]
∴ x is changed to (x - 3), that means there is a translation 3 units
to the right
∵ We add the parent function by 1, that means there is a translation
1 unit up
* There is translation 3 units to the right and 1 unit up
c) To find the domain of the function, find the values of x which
make the function undefined
∵ [tex]log_{2}(0)[/tex] is undefined
∴ x - 3 can not be 0
∵ x - 3 = 0 ⇒ add 3 to both sides
∴ x = 3
∴ The domain of the function is all real number greater than 3
* The domain is {x I x > 3}
∵ x can not be 3
∴ There is a vertical asymptote, its equation is x = 3
* The equation of the asymptote is x = 3
# Look to the attached graph for more understand for the domain
and the equation of the asymptote
independent of dependent plzzz help
Answer:first one is dependent
second one is independent
Step-by-step explanation:
I do exercises on it
the average speed of a train, r, is found by dividing its distance traveled, d, by its time spent traveling, t. Write a formula for the average speed of a train. Then solve the formula for d.
Answer: distance = rate x time
Step-by-step explanation: divided by distance then multiply by rate
write the slope intercept inequality (0,2) (-1,-2)
Hey there! :)
(0, 2) & (-1, -2)
Slope-intercept form is : y=mx+b , where m=slope, b=y-intercept
First, we must find the slope using the slope formula, which is :
m = y2-y1/x2-x1
Where y2 = -2 ; y1 = 2 ; x2 = -1 ; x1 = 0
Now, let's plug and chug! :)
m = (-2 - 2) / (-1 - 0)
Simplify.
m = -4/-1 --> Therefore, our slope is : m = 4
Now that we have the slope, we can plug this (and our original coordinates) into point-slope form, which is : y - y1 = m(x - x1) -> use the coordinates (0, 2)
y - 2 = 4(x - 0)
Simplify.
y - 2 = 4x
Add 2 to both sides.
y = 4x + 2
Hope this helped! :)
Draw a square. Place a counter on each corner, or vertex of the square that you drew.Write how many corners, or vertices.
Answer:
4
Step-by-step explanation:
Count
You select a card from a standard shuffled deck of 52 cards. Without replacing, you select another card. Find the probability that you select a black card, then a red card.
In a standard shuffled deck of 52 cards, half of the cards are black and half of the cards are red: (26 black cards, 26 red cards).
Since we are interested in pulling a black card first, the probability is 26/52.
Without replacing the card we have chosen, we are left with 51 total cards in the entire deck (25 black cards, 26 red cards).
Now that we want to pull a red card, we know that the probability will be 26/51.
Since we are interested in both events occurring simultaneously, we must multiply the probability of the first by the probability of the second, aka: (26/52) * (26/51)
The answer we are given is 0.2549
The probability of picking a black card and then a red card from a standard deck without replacement is 13/51.
To calculate the probability of selecting a black card and then a red card from a standard deck without replacement, we need to consider the sequence of the two events. Initially, the deck contains 26 black cards (spades and clubs) and 26 red cards (diamonds and hearts). The probability P(A) of picking a black card first is 26/52 or 1/2.
After one black card has been removed, there are now 51 cards left in the deck with 26 red cards remaining. The probability P(B) of then picking a red card is 26/51. To find the overall probability of both events happening in sequence, we multiply the probabilities:
[tex]P(A and B) = P(A) \times P(B) = (\frac{1}{2}) \times (\frac{26}{51})[/tex]
This simplifies to P(A and B) = [tex](\frac{26}{102})[/tex] which can be further simplified to [tex](\frac{13}{51}).[/tex]
What is 10% of $4.30 ?
Answer: 0.43
Step-by-step explanation: if you ever need help like this for percentages again i just use this website its reallyyyy helpful :) https://percentagecalculator.net/
Mr. bean just won the lottery and is going to pay it forward! He's going to give students he see's in the hall $4 and teachers he see's in the hall $7. even though he won $100,000,000,000 he's only willing to give out $100
a) create an equation to model this situation
b) solve your equation in terms of the variable you designated for the number of students that mr. bean gave money to
Answer:
a) 4x +7y =100 b) 4x = 100-7y
Step-by-step explanation:
students = 4x
teachers = 7y
4x +7y = 100
4x =100 -7y
Final answer:
The equation is solved to determine the number of students Mr. Bean gave money to as 2.
Explanation:
a) Equation:
Let x be the number of students and y be the number of teachers Mr. Bean gave money to.
Equation: 4x + 7y = 100
b) Solving the equation:
Given that Mr. Bean only gave out $100, we substitute this into the equation:
4x + 7y = 100
4x + 7(14-x) = 100
4x + 98 - 7x = 100
98 - 3x = 100
-3x = 2
x = -2/-3 = 2/3
Therefore, Mr. Bean gave money to 2 students.
Learn more about Equation solving here:
A pot of stew is placed on a stove to heat. The temperature of the liquid reaches 170°F, and then the pot is taken off the burner and placed on a kitchen counter. The temperature of the air in the kitchen is 76°F.
If k = 0.34, the temperature of the liquid after 7 hours will be
ºF. (Hint: Use Newton’s cooling model.)
Final answer:
To calculate the temperature of the liquid after 7 hours, you can use Newton's cooling model. By plugging in the initial temperature, the surrounding temperature, and the cooling constant into the equation T = T0 + (T1 - T0) * e(-kt), you can calculate the temperature after 7 hours. In this case, the temperature after 7 hours is approximately 152.85°F.
Explanation:
In this problem, we can use Newton's cooling model to determine the temperature of the liquid after 7 hours. Newton's cooling model states that the rate of heat loss or gain is directly proportional to the temperature difference between the object and its surroundings. Using the equation T = T0 + (T1 - T0) * e(-kt), where T is the temperature at time t, T0 is the initial temperature, T1 is the surrounding temperature, k is the cooling constant, and e is the base of the natural logarithm, we can calculate the temperature after 7 hours.
Convert the initial temperature, the surrounding temperature, and the time to Kelvin.
Plug the values into the equation and calculate the temperature after 7 hours.
Using the given values of T0 = 170°F, T1 = 76°F, and k = 0.34, we can calculate the temperature after 7 hours.
T0 = 170°F + 459.67 = 629.67 K
T1 = 76°F + 459.67 = 535.67 K
T = 629.67 + (535.67 - 629.67) * e⁻°³⁴*⁷
T ≈ 152.85°F
Determine whether the function f(x) = -2x - 5x is even, odd, or neither.
Answer: odd
Step-by-step explanation:
A function is even if for any input value x and -x there is the same output value y. In other words, a function is even if:
[tex]f (-x) = f (x)[/tex]
A function is odd if it is true that:
[tex]f (-x) = -f (x)[/tex]
Then we must test if [tex]f(-x) = f(x)[/tex] for the function: [tex]f(x)=-2x - 5x[/tex]
[tex]f(-x)=-2(-x) - 5(-x)[/tex]
[tex]f(-x)=2x + 5x[/tex]
So [tex]f(-x) \neq f(x)[/tex]
The function is not even
Now we must test if [tex]f (-x) = -f (x)[/tex] for the function.
[tex]f(-x)=-2(-x) - 5(-x)[/tex]
[tex]f(-x)=2x + 5x[/tex]
[tex]f(-x)=-(-2x -5x)[/tex] and [tex]f(x)=-2x - 5x[/tex]
So [tex]f(-x) = -f(x)[/tex]
Finally the function is odd
What is 5x=45 then x=
5x=45
divide by 5 for 5x and 45 to get the answer
5x/5= 45/5
x=9 ( Answer)
The solution to the equation 5x = 45 is x = 9.
To solve the equation 5x = 45, you want to find the value of x that satisfies the equation.
Here's how you can solve it step by step:
Step 1: Start with the equation 5x = 45.
Step 2: To isolate x, divide both sides of the equation by 5. This step cancels out the multiplication by 5 on the left side of the equation.
(5x) / 5 = 45 / 5
Simplifying further:
x = 9
Explanation: In Step 2, when you divide both sides of the equation by 5, you are essentially undoing the multiplication operation on the left side.
By dividing both sides by the same number, you maintain the equality of the equation.
On the left side, the 5s cancel out, leaving you with just x. On the right side, 45 divided by 5 equals 9.
Thus, x = 9 is the value that satisfies the equation.
Therefore, the solution to the equation 5x = 45 is x = 9.
Learn more about equation click;
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Typethe correct answer in each box. 4x^2+8x+27=88 in order to solve by completing the square what number should be added to both sides of the equation? how many of the solutions to the equation are positive? what is the approximate value of the greatest solution to the equation rounded to the nearest hundredth?
Answer:
1.what number should be added to both sides of the equation? 1
2. how many of the solutions to the equation are positive? one, x=3.031
3.what is the approximate value of the greatest solution to the equation rounded to the nearest hundredth? 3.03
Step-by-step explanation:
The question is on solving for quadratic equations using the completing square method
The equation given is ;
4x²+8x+27=88...........rewrite the equation
4x²+8x+27-88=0
4x²+8x+-61=0...................divide every term of the equation by 4
4x/4²+8x/4+-61/4=0/4
x²+2x-15.25=0..................rewrite the equation as;
x²+2x=15.25.......................complete square on both sides
x²+2x+ (2/2)²= 15.25 +(2/2)²
x²+2x+1 = 15.25+1
x²+2x+1=16.25................factorize the left hand side
(x+1)²=16.25.....................eliminate the root on the left hand side
x+1=±√16.25
x+1= ± 4.031
solutions
x+1= +4.031
x= +4.031-1 =3.031
or
x+1= -4.031
x= -4.031-1 = - 5.031
Answer:
The first box is 1, the second box is 1, and the third box is 3.03
Step-by-step explanation:
How to do it? Its URGENT!!!I need it right now!!!?!? I will give 10 points! Pls!!!
Answer: $360
Step-by-step explanation:
Let Mp the manufacturing price.
First step:
Manufacturer sells at a profit of 25% = Mp + Mp·0.25 = Mp·1.25
Second step:
Agency sells at a profit of 10% = 1.25Mp + 1.25Mp·0.10 = Mp·1.375
Third step:
Shopkeeper sells at a profit of 20% = 1.375Mp + 1.375Mp·0.20 = Mp·1.65
Then the final price = 1.65·Mp
1.65Mp = $594
Mp = $594/1.65 = $360 ►Manufacturer price
Answer: $360
Verification
Manufacturer sells at a profit of 25% = 25/100 = 0.25:
$360 + $360·0.25 = $360(1 + 0.25) = $360 + $90 = $450
Agency sells at a profit of 10% = 10/100 = 0.10:
$450 + $450·0.10 = $450(1 + 0.10) = $450 + $45 = $495
Shopkeeper sells at a profit of 20% = 20/100 = 0.20
$495 + $495·0.20 = $495(1 + 0.20) = $495 + $99 = $594 Checked!
[tex]\textit{\textbf{Spymore}}[/tex]
Describe a relationship that the graph may represent
Answer:
an increase then a pause then anotha increase
Step-by-step explanation:
Hey Hey :-)
^^^^^^^^^^^
The circumference of the circle with a diameter of 16 units is approximately 50.26544 units.
To find the circumference of a circle, you can use the formula C = πd, where C represents the circumference and d is the diameter of the circle. In this case, the diameter of the circle is given as 16 units.
Substituting the value into the formula, we have C = π(16). Using the value of π (pi) as approximately 3.14159, we can calculate the circumference.
C = 3.14159 x 16 = 50.26544 units.
Therefore, the circumference of the circle with a diameter of 16 units is approximately 50.26544 units.
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Solve the proportion below. X/18= 8.5/17 x=?
Answer:
x=9
Step-by-step explanation:
we have been given the following proportion;
x/18 = 8.5/17
we are required to solve for x. In order to solve for x, we simply make x the subject on the left hand side . This can be done by multiplying both sides by 18;
(x/18)*18 = (8.5/17)*18
x = 153/17
x = 9
Answer:
9
Step-by-step explanation:
What is the domain of y= 2x - 4/x^2 - 4?
Answer:
{x while x ≠2, -2}
Step-by-step explanation:
First let's define domain,
Domain is the set of all values on which the function is defined i.e. the function doesn't approach to infinity.
Given function is:
[tex]y = \frac{2x-4}{x^{2} -4}[/tex]
We will look for all the values of x on which the function will become undefined:
We can see that x= 2 and x=-2 will make the denominator zero as there is x^2 involved. The denominator zero will make the function undefined.
So, the domain of the function is set of all real numbers except 2 nd -2 {x while x ≠2, -2} ..
Answer:
[tex](-\infty,-2)\cup (-2,2)\cup (2,+\infty)[/tex]
Step-by-step explanation:
The given rational expression is:
[tex]y=\frac{2x-4}{x^2-4}[/tex]
We factor this expression to obtain:
[tex]y=\frac{2(x-2)}{(x-2)(x+2)}[/tex]
We can see that, this rational function has a hole at x=2 and a vertical asymptote at x=-2
Therefore the domain is
[tex]x\ne 2\: and\:x\ne -2[/tex]
Or
[tex](-\infty,-2)\cup (-2,2)\cup (2,+\infty)[/tex]
Which binomial is equivalent to (xy + z)(xy − z)?
Final answer:
The binomial equivalent to (xy + z)(xy - z) is found by applying the difference of squares formula, resulting in x²y² - z².
Explanation:
The question asks which binomial is equivalent to the expression (xy + z)(xy - z). This can be simplified using the difference of squares formula, which is a² - b² = (a + b)(a - b). In this case, a is xy and b is z.
Applying the formula, we have:
First, square a: (xy)² = x²y²
Then, square b: z²
Subtract the square of b from the square of a to get the answer: x²y² - z²
Therefore, the binomial equivalent to (xy + z)(xy - z) is x²y² - z².
<1 and <2 are adjacent angles.
a.) True
b.) False
Answer:
True, ∠1 and ∠2 are adjacent angles. True
Explanation:
Definition of adjacent angles: Two angles are called adjacent angles if
1. They have a common side
2. Common vertex (corner point)
3. They don't overlap.
Further Explanation:
In the given figure two lines are intersecting each other and form 4 angles, ∠1, ∠2, ∠3 and ∠4.
From the given figure it is clear that, the common vertex of all angles is the point of intersection of both lines. The pairs of adjacent angles are
(i) ∠1 and ∠2
(ii) ∠2 and ∠3
(iii) ∠3 and ∠4
(iv) ∠1 and ∠4
Therefore, ∠1 and ∠2 are adjacent angles and the given statement is true.
Learn More:
Adjacent angles : https://brainly.com/question/11933939 (Answered by MollieToliver)
Adjacent angles : https://brainly.com/question/12256805 (Answered by ApusApus)
Keywords:
Adjacent angles, Intersection of two lines.
When we have an intersection of two lines, four angles are created in that intersection.
With this, we define two adjacent angles as a pair of angles that is separated by one of the lines.
In the image, we can see that:
∠1 and ∠2 are adjacent
∠2 and ∠3 are adjacent
∠3 and ∠4 are adjacent
∠4 and ∠1 are adjacent.
Then the statement:
"∠1 and ∠2 are adjacent"
Is true, by definition of adjacent angles.
If you want to learn more, you can read:
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f(y) = 8y2 – 7y + 6. What is the constant of the function?
Answer:
+ 6
Step-by-step explanation:
The constant term in the function is the term which is only numeric and has no variable attached to it.
f(y) = 8y² - 7y + 6 → has constant term + 6
let f(x)=x^2-2x+2 and g(x)=x-3 find f(x)•g(x)
Answer:
[tex]\large\boxed{x^3-5x^2+8x-6}[/tex]
Step-by-step explanation:
[tex]f(x)=x^2-2x+2\\\\g(x)=x-3\\\\f(x)\cdot g(x)=(x^2-2x+2)(x-3)\qquad\text{use}\ \bold{FOIL}:\ (a+b)(c+d)=ac+ad+bc+bd\\\\f(x)\cdot g(x)=(x^2)(x)+(x^2)(-3)+(-2x)(x)+(-2x)(-3)+(2)(x)+(2)(-3)\\\\f(x)\cdot g(x)=x^3-3x^2-2x^2+6x+2x-6\qquad\text{combine like terms}\\\\f(x)\cdot g(x)=x^3+(-3x^2-2x^2)+(6x+2x)-6\\\\f(x)\cdot g(x)=x^3-5x^2+8x-6[/tex]
Simplify the expression using long division. (10x2 – 85x – 10) ÷ (x – 8) Question 7 options: quotient 10x – 5 and remainder –50 quotient 10x – 85 and remainder 8 quotient 10x – 5 and remainder –30 quotient 10x + 5 and remainder 30
Answer:
The quotient is (10x - 5) and the reminder is -50 ⇒ 1st answer
Step-by-step explanation:
* Lets solve the long division by easiest way
∵ (10x² - 85x - 10)/(x - 8)
∵ (10x² - 85x - 10) is the dividend
∵ (x - 8) is the divisor
- Divide the first term of the dividend by the first term of the divisor
∴ 10x² ÷ x = 10x ⇒ first term of the quotient
- Multiply 10x by the the divisor
∴ 10x(x - 8) = 10x² - 80x
- Subtract the answer from the dividend
∴ (10x² - 85x - 10) - (10x² - 80x) =
# 10x² - 10x² = 0
# -85x - -80x = -85x + 80x = -5x
# -10
∴ (10x² - 85x - 10)/(x - 8) = 10x + (-5x - 10)/(x - 8)
* Repeat the same steps again with the new dividend -5x - 10
- Divide the first term of the dividend by the first term of the divisor
∴ -5x ÷ x = -5 ⇒ second term of the quotient
- Multiply -5 by the divisor
∴ -5(x - 8) = -5x + 40
- Subtract the answer from the dividend
∴ (-5x - 10) - (-5x + 40) =
# -5x - -5x = -5x + 5x = 0
# -10 - 40 = -50
∴ (-5x - 10)/(x - 8) = -5 + -50/(x - 8)
∴ (10x² - 85x - 10)/(x - 8) = 10x - 5 + -50/(x - 8)
- The quotient is the answer of the division
∴ The quotient is (10x - 5) and the reminder is -50
Answer:
The quotient is 10x - 5 and the reminder is -50
Step-by-step explanation: