For this case we have to:
Initial weight = [tex]123 \frac {1} {4} = \frac {4 * 123 + 1} {4} = \frac {493} {4} = 123.25 \ pounds[/tex]
Final weight =[tex]120 \frac {1} {2} = \frac {2 * 120 + 1} {2} = \frac {241} {2} = 120.5 \ pounds[/tex]
We subtract to know how many pounds he lost:
[tex]123.25-120.5 = 2.75[/tex]
So, Kerry lost 2.75 pounds.
ANswer:
Kerry lost [tex]2 \frac {3} {4}[/tex] pounds.
Answer:[tex]2.75\ pounds[/tex] or [tex]2\frac{3}{4}\ pounds[/tex]
Step-by-step explanation:
You can convert the mixed numbers to decimal numbers. Divide the numerator by the denominator of the fraction and add it to the whole number part:
[tex]123\ \frac{1}{4}\ pounds=(123+0.25)\ pounds=123.25\ pounds[/tex]
[tex]120\ \frac{1}{2}\ pounds=(120+0.5)\ pounds=120.5\ pounds[/tex]
To calculate how many pounds Kerry lost, you need to subtract his weigth of a month ago and his actual weigth.
Therefore, you get that he lost:
[tex]pounds\ lost=123.25\ pounds-120.5\ pounds[/tex]
[tex]pounds\ lost=2.75\ pounds[/tex] or [tex]2\frac{3}{4}\ pounds[/tex]
Jerry hiked along a path. From his starting position, he hiked downhill to a valley where the elevation dropped 25 meters below his starting position. Then, he hiked up to a hill that was 40 meters higher than the valley. The following equation describes this situation. -25 + 40 = 15. What does 15 tell us?
Answer: 15 represents where Jerry is after the elevation dropped 25 meters and then rose 40 meters.
Answer:
15 represents that Jerry hiked up 15 meters from his starting position.
Step-by-step explanation:
It is given that Jerry hiked downhill to a valley where the elevation dropped 25 meters below his starting position. Then, he hiked up to a hill that was 40 meters higher than the valley.
Hiked downhill = 25 meters
Hiked up = 40 meters
The given equation is
[tex]-25+40=15[/tex]
Here, hiked downhill represented by negative sign and hiked up represents by positive sign.
So, positive 15 represents that Jerry hiked up 15 meters from his starting position.
Which is the graph of the linear inequality 1/2 x – 2y > –6? Image for option 1 Image for option 2 Image for option 3 Image for option 4
e.d.g.e.n.u.i.t.y
Answer:
The graph in the attached figure
Step-by-step explanation:
we have
[tex]\frac{1}{2}x-2y > -6[/tex]
Isolate the variable y
[tex]-2y > -6-\frac{1}{2}x[/tex]
Divide by -2 both sides
[tex]y < 3+\frac{1}{4}x[/tex]
The solution of the inequality is the shaded area below the dashed line [tex]y = 3+\frac{1}{4}x[/tex]
To plot the inequality find the intercepts
The y-intercept is the point (0,3) (value of y when the value of x is equal to zero)
The x-intercept is the point (-12,0) (value of x when the value of y is equal to zero)
Plot the intercepts
Drawn the dashed line
shaded the region below the dashed line
The graph in the attached figure
Answer:
I think it is D.
I could be wrong though, my apologies if I am :(
What I the slope of a line that is perpendicular to the line 2y-3x=8
ANSWER
[tex]- \frac{2}{3} [/tex]
EXPLANATION
The given given equation is
[tex]2y - 3x = 8[/tex]
We need to rewrite this equation in the slope-intercept form:
[tex]y = mx + b[/tex]
We add 3x to both sides.
[tex]2y - 3x + 3x=8 + 3x[/tex]
[tex] \implies \: 2y = 3x + 8[/tex]
We divide through by 2 to get,
[tex]y = \frac{3}{2}x + 4[/tex]
The slope of this line is
[tex]m = \frac{3}{2} [/tex]
Let the slope of the line perpendicular to this line be 'n' .
Then the product of the slopes of two perpendicular lines is always negative 1.
[tex]m \times n = - 1[/tex]
[tex] \implies \: \frac{3}{2} n = - 1[/tex]
[tex]\implies \: \frac{2}{3} \times \frac{3}{2}n = - 1 \times \frac{2}{3} [/tex]
[tex]n = - \frac{2}{3} [/tex]
Therefore the slope of the new line is
[tex] - \frac{2}{3} [/tex]
Answer:
C) -2/3
Step-by-step explanation:
2y-3x=8
2y=3x-8
Divide 2 from each number to get:
y=3/2-4
The opposite reciprocal of 3/2 is -2/3
can somebody help
1. What is the formula for finding the vertical distance between two points on a coordinate plane?
Answer:
Vertical Distance = [tex]y_{2}-y_{1}[/tex]
Step-by-step explanation:
Here we are asked about the formula for vertical distance between two coordinates.
Suppose there are two coordinates
[tex](x_{1},y_{1}) ; (x_{2},y_{2})[/tex]
Vertical distance between two coordinates is the distance between the y coordinates of the two coordinates.
This can be find out with the formula
[tex]D_{y}=y_{2}-y_{1}[/tex]
For example:
Let two coordinates are (2,4) and (5,2)
Here the vertical distance can be find by using above formula as
[tex]D_{y}[/tex]=4-2
[tex]D_{y}[/tex]=2 units.
If f(x) = 3x^2+ 1 and g(x) = 1 - x, what is the value of (f – g)(2)?
Answer:
14
Step-by-step explanation:
(f - g)(x) = f(x) - g(x)
f(x) - g(x) = 3x² + 1 - (1 - x) = 3x² + 1 - 1 + x = 3x² + x
(f - g)(2) = 3(2)² + 2 = 12 + 2 = 14
PLEASE///Abc is a right triangle.If AC=4 and BC=10,find AB.Leave your answer in simplest radical form
2root 21
Opp^2 =hyp^2 - adj^2
Opp=root 10^2-4^2
Opp=root 100-16
Opp =root 84
AB=2root21 or 9.165
What is the surface area of the right prism? height-18in, width-6in,length-9in
possible answers-
A-648
B-972
C-486
D-540
Answer: Option A.
Step-by-step explanation:
The surface area of a right rectangular prism can be calculated with this formula:
[tex]SA = 2(wl + lh + hw)[/tex]
Where "w" is the width. "l" is the lenght and "h" is the height.
We know that:
[tex]w=6in\\l=9in\\h=18in[/tex]
Knowing this values, we can substitute them into the formula.
Therefore we get that the surface area of a right rectangular prism is this:
[tex]SA = 2[(6in)(9in) + (9in)(18in) +(18in)(6in)][/tex]
[tex]SA=648in^2[/tex]
This matches with the option A.
What is the multiple zero and multiplicity of f(x) = x3 − 8x2 + 16x?
Answer:
zeros
x=0
x=4 with multiplicity 2
Step-by-step explanation:
We need to solve x^3-8x^2+16x=0
Notice each term has a factor of x in common in x^3-8x^2+16x so we can factor it as x(x^2-8x+16)
Now x^2-8x+16 is a quadratic where a=1... We can see if it is factorable by looking for two numbers that multiply to be 16 and add up to be -8 which is -4 and -4
So you have x^3-8x^2+16x=0 is equivalent to x(x-4)(x-4)=0 (this one is in factored form).
x=0
x=4 (multiplicity 2 since you had the factor that is came from occurring twice)
Which triangle is a 30°-60°-90° triangle?
Answer: The answer is below, so the picture shows you can find the measure of any of the three sides, simply by knowing the measure of at least one side in the triangle. The hypotenuse is equal to twice the length of the shorter leg, which is the side across from the 30 degree angle.
* Which means this triangle is a 30° - 60° - 90°.
* Hopefully this helps:) Mark me the brainliest:)!!!!
This is a right triangle
The graph of f’’(x) is continuous and decreasing with an x-intercept at x=-3. Which of the following statements must be true?
A. The graph of f is always concave down
B. The graph of f has an inflection point at x=-3
C. The graph of f has a relative minimum at x=-3
D. None of these are true
I cannot say that I am entirely sure of the answer so let me know if it doesn't make sense, but I will try to explain as best as I can nonetheless.
1. The graph of f''(x) represents the graph of the second derivative of f(x). Now, we know that the graph is continuous and decreasing. I think that the most important thing here is to mentally visualise the graph - if it is decreasing and has an x-intercept at x = -3, then we can say the following:
a) for all values of x before -3, f''(x) is positive
b) at x = -3, f''(x) is 0
c) for all values of x after x = -3, f''(x) is negative
2. What this means in terms of the graph f'(x) is the following:
a) for values of x less than -3, the gradient of the graph of f'(x) is positive and becoming less positive as x reaches 0
b) at x = -3, the gradient of the graph of f'(x) is 0
c) for values of x more than -3, the gradient of the graph of f'(x) is negative and becoming more negative as x reaches ∞
With this in mind, maybe try drawing a quick sketch to guide you (I would include one here but I have trouble adding attachments so I hope you'll forgive my lack of one) - it could perhaps look something similar to -(x + 3)^2 (but wouldn't be restricted to this - remember, it is just a visual aid).
3. Now, we need to work from the graph of f'(x) to the graph of f(x).
What we need to notice is that the graph of f'(x) takes the form of a concave down graph - this means that the gradient of the graph of f(x) immediately to either side of x = -3 changes from being either:
a) + >> ++ >> +++ >> ++ >> +
(Here, the number of + symbols signifies the strength of the positive gradient. >> represents an arrow.
So, the gradient starts off less positive, becomes more positives, reaches its peak, and then becomes gradually less positive again - imagine this being represented by f'(x) = -(x + 3)^2 + 5 (again, remember this is just a visual aid) )
b) --- >> -- >> - >> -- >> ---
(Likewise, the number of - symbols signifies the strength of the negative gradient.
So, the gradient starts off very negative, becomes less negative, reaches its peak, and then gradually becomes more negative again - you can see that this is effectively the same pattern as above: there is an increasing trend and then a decreasing trend. You can imagine this as being represented by the graph f'(x) = -(x + 3)^2 - 5)
c) -- >> - >> 0 >> - >> --
(Here, the gradient is negative, becomes less negative, reaches 0, then gradually becomes more negative - again, there is the same increasing trend followed by a decreasing trend. You can imagine this as being represented by the graph f'(x) = -(x + 3)^2)
It is this increasing trend in the gradient up to x = -3 followed by a decreasing trend that is crucial to take note of - this signifies that there is a point of inflection at x = -3. What we must remember here is that a point of inflection is characterised by a change in the curvature of the graph - either from concave up to concave down or from concave down to concave up. In our case, this would be a transition from concave up to concave down as the gradient gradually becomes more positive until it reaches its highest value at x = -3 and then gradually becomes less positive. Thus, we can say that answer B (the graph of f has an inflection point at x = -3) is correct.
Looking at the other answers:
A - The graph of f cannot be always concave down since there is a clear change in the gradient from less positive to more positive to less positive again (if it were always concave down the gradient would just gradually become more negative)
C - A relative minimum is characterised by the fact that the gradient to the left of the minimum is negative, the gradient at the minimum is 0, and the gradient to the right of the minimum is positive. Since this isn't the case for our graph, this is not the correct answer.
D - This is only a viable answer if none of the others are correct; since we have identified B as correct, this is incorrect.
I hope this helped but if you have any questions or problems with my working, please don't hesitate to comment below.
The correct statement about the function is,
⇒ The graph of f is always concave down.
What is mean by Function?A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
Since, We have to given that;
The graph of f’’(x) is continuous and decreasing with an x-intercept at
x = - 3 .
We know that;
⇒ f(x) is a function then the solutions to the equation f′(x) = 0 gives the maximum and minimum values to f(x)
Hence, The value of x gives maximum if f′′(x) is negative and minimum if f′′(x) is positive.
- Inflection points of the function f(x) are found the solutions of the equation f′′(x) = 0
- The graph of f'(x) is continuous means that the graph is unbroken line
- The graph of f'(x) decreasing with an x-intercept at x = 2 means f'(2) = 0
- The differentiation of a function equal to zero at the critical point (minimum or maximum) of the function
Since, f'(x) = 0 at x = 2
Hence, The x-coordinate of the critical point of f(x) is 2
Now, If the differentiation of the function is decreasing, then the critical point of the function is maximum point.
Since, f'(x) is decreasing
Hence, The critical point of the f(x) is maximum point
That means the slope of curve is negative
Hence, The graph of f is concave down at x = 2
Thus, The correct answer is the graph of f is always concave down.
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A light post, shown below, is set in concrete and supported with a wire
while the concrete dries. Find, to the nearest degree, the angle of
elevation of the top of the post made by the wire from the stake in the
ground.
(1) 66
(2) 24
(3) 22
(4) 64
Answer:
Step-by-step explanation:
Twelve
You are correct, but I have a small comment.
As far as I can see, you have both 12 and 13 correct. The short way to do 12 is just to divide 72 into 360
360 / 72 = 5
The more general formula is 360 / central angle = # of sides.
What the question means is that if your start with a polygon (it is a regular polygon by the way), and rotate it around its center, how many sides does it have in order that when you go through 72 degrees, the figure looks like it did when you started.
If the polygon is completely unmarked, then the idea is that it will look like you haven't done anything to the polygon even though you have rotated it 72 degrees.
The way you did 13 is exactly how it should be done.
for which value of θ is sinθ=-1
[tex]\sin\theta=-1\\\theta=-\dfrac{\pi}{2}+2n\pi, n\in\mathbb{Z}[/tex]
Answer: 270
Step-by-step explanation:sin 270 = -1
#5 Antonio and Abby had the same nimber of paperclips. After Antonio gave 30 paperclips to Abby, Abby had twice as many paperclips as Antonio. How many paperclips did they have in all?
#6 Emily and Jasmine had the same number of stamps. After Emily gave 42 stamps to Jasmine, Jasmine had twice as many stamps as Emily. How many stamps did Jasmine have in the end?
#7 Elena had 60 colored pencils. Lucy had 26 colored pencils. How many pencils must Elena give to Lucy so that Elena will have 4 more colored pencils than Lucy?
Show how you answered please
Answer:
#5: 180 paperclips in total.
#6: 126 stamps in total.
#7: Elena should give Lucy 15 colored pencils.
Step-by-step explanation:
This explanation solves each question by setting a single unknown, [tex]x[/tex].
#5Let [tex]x[/tex] the initial number of paperclips of Antonio. That should also be the number of Abby's paperclips.
Initially:
Antonio: [tex]x[/tex] paperclips;Abby: [tex]x[/tex] paperclips.Antonio gives [tex]30[/tex] paperclips to Abby. After that,
Antonio: [tex](x - 30)[/tex] paperclips;Abby: [tex]x + 30[/tex] paperclips.Abby now possess twice as many paperclips as Antonio does. In other words,
[tex]2(x - 30) = x + 30[/tex].
By the distributive property:
[tex]2x - 60 = x + 30[/tex].
Substract [tex]x - 60[/tex] from both sides
[tex]x = 30 - (-60) = 90[/tex].
Both Antonio and Abby initially possess 90 paperclips. That's 180 in total.
#6Similarly, let [tex]x[/tex] be the number of Emily's stamps. That should be the same as the number of Jasmine's stamps.
Initially:
Emily: [tex]x[/tex] stamps;Jasmine: [tex]x[/tex] stamps.After Emily gives [tex]42[/tex] stamps to Jasmine:
Emily: [tex]x-42[/tex] stamps;Jasmine: [tex]x+42[/tex] stamps.Jasmine now possesses twice as many stamps as Emily does. In other words,
[tex]2(x-42) = x+42[/tex].
[tex]x = 42 + 2\times 42 = 126[/tex].
Jasmine used to possess 126 stamps. Now she possesses [tex]126 + 42 = 168[/tex] stamps after receiving [tex]42[/tex] stamps from Emily.
#7Let the number of pencils that Elena needs to give to Lucy be [tex]x[/tex].
Initially:
Elena: 60 pencils;Lucy: 26 pencils.After Elena gives [tex]x[/tex] pencils to Lucy:
Elena: [tex]60 - x[/tex] pencils;Lucy: [tex]26 + x[/tex] pencils.Elena should now possess four more pencils than Lucy does. In other words,
[tex]\underbrace{60 - x}_{\text{Elena's}} = \underbrace{(26 + x)}_{\text{Lucy's}} +4[/tex].
[tex]2x = 30[/tex].
[tex]x = 15[/tex].
A plant's height is 1.4 times its age. Write an
equation for this situation.
A h= plant's height; y=plant's age;
h= 1.4y
Bh=plant's age; y = plant's height;
h= 1.4y
C h= plant's height; y = plant's age;
y= 1.4h
Dh = plant's height; y = plant's age;
1.4 = hy
Answer:
A
Step-by-step explanation:
Since we are given self defining variables, h is obviously referring to the plant's height and y is referring to the plant's years or age.
Then, since a plant's height is 1.4 times its age, age multiplied by 1.4 should be the plants height.
The equation would come out to [tex]h=1.4y[/tex]
Describe the transformation. (picture included)
A) Translation 2 units down
B) Reflection across y = -1
C) Reflection across x-axis
D) Reflection across the y-axis
Express (1-2i) second power in the form a+bi
[tex]\bf (1-2i)^2\implies (1-2i)(1-2i)\implies 1-2i-2i+(2i)^2 \\\\\\ 1-4i+(2^2i^2)\implies \stackrel{\textit{recall }i^2=-1}{1-4i+(4\cdot -1)}\implies 1-4i-4\implies \boxed{-3-4i}[/tex]
Simplify: –4(x – 6) + 3(a – 7)
A. -4x + 3a – 45
B. –4x + 3a + 45
C. –4x + 3a – 3
D. –4x + 3a + 3
Answer:
D
Step-by-step explanation:
Given
- 4(x - 6) + 3(a - 7)
distribute the first parenthesis by - 4 and the second by 3
= - 4x + 24 + 3a - 21
= - 4x + 3a + 3 → D
Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4.
1. Add 5 positive x-tiles to both sides and create zero pairs.
2. Add 4 negative unit tiles to both sides and create zero pairs.
3. Divide the unit tiles evenly among the x-tiles.
x =
Answer:
[tex]x=-2[/tex]
Step-by-step explanation:
[tex]-5x+(-2)=-2x+4[/tex]
[tex]-5x+(-2)+5x=-2x+4+5x[/tex] (according to first step)
[tex]-2= 3x+4[/tex]
[tex]-2+(-4)=3x+4+(-4)[/tex] (according to second step)
[tex]-6=3x[/tex]
[tex]\frac{-6}{3}[/tex]=[tex]\frac{3x}{3}[/tex] (according to third step)
[tex]-2=x[/tex]
[tex]x=-2[/tex]
hence the solution of the given equation is [tex]x=-2[/tex]
Answer:
The answer is negative two.
Step-by-step explanation:
sorry i'm very late but this answer might help other people.
hope you have a good day.
:)
P=2n+2w solve for n can you plz help me
How many cubes with side lengths of 1/3 cm does it take to fill the prism?
Answer:
120 tiny cubes
Step-by-step explanation:
Find the volume of both the tiny cubes and the big cube. Then we will take big volume cube and divide it by tiny cube volume.
So big cube has volume (5/3*4/3*2)=40/9 cm^3
Tiny cube volume is (1/3*1/3*1/3)=1/27 cm^3
(40/9) divided by (1/27)
is the same as 40/9 time 27=40(27)/9=40(3)=120
Answer:
120
Step-by-step explanation:
For the given quadratic equation convert into vertex form, find the vertex and find the value for x=6 Y=-2x^2+2x+2
Answer:
Part 1) The vertex is the point (0.50,2.50)
part 2) [tex]y=-58[/tex]
Step-by-step explanation:
we have
[tex]y=-2x^{2} +2x+2[/tex]
Part 1) Convert into vertex form
Group terms that contain the same variable, and move the constant to the opposite side of the equation
[tex]y-2=-2x^{2} +2x[/tex]
Factor the leading coefficient
[tex]y-2=-2(x^{2} -x)[/tex]
Complete the square. Remember to balance the equation by adding the same constants to each side
[tex]y-2-0.50=-2(x^{2} -x+0.25)[/tex]
[tex]y-2.50=-2(x^{2} -x+0.25)[/tex]
[tex]y-2.50=-2(x-0.50)^{2}[/tex]
[tex]y=-2(x-0.50)^{2}+2.50[/tex] -----> equation in vertex form
The vertex is the point (0.50,2.50)
Part 2) Find the value of y for x=6
substitute the value of x in the equation
[tex]y=-2(6)^{2} +2(6)+2[/tex]
[tex]y=-72 +12+2[/tex]
[tex]y=-58[/tex]
Solve y = x^2 +11 for x.
A. x = +- sq.rt.y +11
B. х = +- sq.rt. y-11
C.х = y - 11
D. x = y +11
The solution for the given equation is x = ±√y-11.
How do we solve a given equation to change the variable?This can be done by moving every term with the required variable to the other side and equating it.
We can solve the given equation as shown below:The given equation is: y = x^2 +11
We can rewrite this equation in terms of y.
This can be done as shown below:
y = x^2 +11
⇒ y -11 = x^2
⇒ ±√y-11 = x
⇒ x = ±√y-11
The given equation is rewritten in terms of y.
The equation written in terms of y is x = ±√y-11.
Therefore, the solution for the given equation is x = ±√y-11.
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11.22x − 200 < 347.96
Answer:
x < 48.8 ≈ 49
Step-by-step explanation:
11.22x − 200 < 347.96
add 200 to both sides
11.22x − 200 + 200 < 347.96 + 200
11.22x < 547.96
divide via by 11.22
x < 547.96/11.22
x < 48.8 ≈ 49
Answer: The value of x < 48.83.
Step-by-step explanation:
Since we have given that
[tex]11.22x-200<347.96[/tex]
We need to find the value of x:
First we add 200 on the both sides:
[tex]11.22x-200+200<347.96+200\\\\11.22x<547.96[/tex]
Now, we divide it by 11.22 on both the sides:
[tex]\dfrac{11.22x}{11.22}<\dfrac{547.96}{11.22}\\\\x<48.83[/tex]
Hence, the value of x < 48.83.
For the function, f(x) = -3x + 5.
If f(x) = -1, what is the value of x?
Remember the f(x) is the same thing as y so...
y = -3x + 5
y = -1
To solve this plug -1 in for y in the equation y = -3x + 5 and solve for x
-1 = -3x + 5
-6 = -3x
2 = x
When f(x) is -1 then x is 2
Hope this helped!
~Just a girl in love with Shawn Mendes
Solve the equation for 1,
PV, PzV2
TT
Tz=7
(Type a single fraction.)
Answer:
2/14
Step-by-step explanation:
i tried my best
Choose the correct slope of the line that passes through the points (1, −3) and (3, −5).
Answer:
(1, −3) (3, −5)
Slope = Y2 -Y1 / X2 - X1
Slope = -5 --3 / 3 -1
Slope = -2 / 2
Slope = -1
Step-by-step explanation:
read The question and give Me The answers for number 19 This is a Tough one it wants Me To click on The graph
Answer:
(0, 5)
Step-by-step explanation:
At the time the ball is thrown time t = 0
The corresponding height at t = 0 is 5 ft
This is the point (0, 5) on the graph
Elizabeth's credit card computes her finance charges using the previous balance method and a 30 day billing cycle. The table below shows Elizabeth's credit card transactions in July. If Elizabeth has an APR of 14.61%, how much will her July finance charge be
Answer:
c. $11.80
Step-by-step explanation:
If Elizabeth has an APR of 14.61%, how much will her July finance charge be?
a. $9.97
b. $12.62
c. $11.80
d. $10.80
Aluminum has a density of 2.7 grams per cubic centimeter. What is the mass of a piece of aluminum with a volume of 40 cubic centimeters?
A. 21 g
B. 57 g
C. 96 g
D. 108 g
Answer:
Option D. 108 g
Step-by-step explanation:
we know that
The density is equal to the mass divided by the volume
D=m/V
Solve for the mass m
m=D*V
we have
D=2.7 g/cm³
V=40 cm³
substitute
m=(2.7)(40)=108 g
Please answer will give all my points
Answer:
C
Step-by-step explanation:
Given
S = lw + 0.5Ph ( subtract lw from both sides )
S - lw = 0.5Ph ( divide both sides by 0.5h )
[tex]\frac{S-lw}{0.5h}[/tex] = P → C
Answer:
c
Step-by-step explanation: