Lauren was trying to approximate the solution to n² = 115. She said that it lies
between √100 and √121. Therefore, it lies between 4 and 5, however a little closer
to 5. She approximated it to be about 4.7. Do you agree or disagree with her
reasoning? Explain.

Answers

Answer 1

What she approximated as 4.7 is not correct because the nearest perfect squares are 10 and 11 which are different from what she got.

How to find the square root of a number?

We are told that Lauren is trying to approximate the solution to n² = 115.

Now, she has figured out that it lies between √100 and √121..

Now, √100 = 10 and √121 = 11. Thus, we can say that if she says it is between 4 and 5, then she is wrong because the nearest perfect squares are 10 and 11 which are different from what she got.

Thus, what she approximated as 4.7 is not correct.

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Related Questions

I am stuck please help with this graph.

I am stuck please help with this graph.

Answers

An equation for the function graphed above include the following: g(x) = -1/4|x + 1| - 2.

How to interpret and determine the equation of g(x)?

By critically observing the graph of this absolute value function, we can reasonably infer and logically deduce that the parent absolute value function f(x) = |x| was vertically compressed by a factor of 1/4, reflected over the x-axis, followed by a vertical translation 2 units down, and then a horizontal translation to the left by 1 unit, in order to produce the transformed absolute value function as follows;

f(x) = |x|

y = A|x + B| + C

g(x) = -1/4|x + 1| - 2

In conclusion, the value of the variables A, B, and C are -1/4, 1, and 2 respectively.

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Find a and b using the factor theorem.
\(f(x)=x^3+ax^2+bx-12\) has factor \((x-1), (x+1)\)

Answers

The values of a and b using the factor theorem for the polynomial f(x), we set f(1) and f(-1) equal to zero. Solving the resulting system of equations, we find that a = 12 and b = -1.

To find the values of a and b using the factor theorem, we need to use the given factors (x - 1) and (x + 1) and the fact that they are roots of the polynomial f(x).
The factor theorem states that if (x - c) is a factor of a polynomial, then f(c) = 0. Therefore, we can set x = 1 and x = -1 in the polynomial f(x) to get two equations.
First, let's substitute x = 1 into f(x):
f(1) = (1)^3 + a(1)^2 + b(1) - 12
f(1) = 1 + a + b - 12
Next, let's substitute x = -1 into f(x):
f(-1) = (-1)^3 + a(-1)^2 + b(-1) - 12
f(-1) = -1 + a - b - 12
Since (x - 1) and (x + 1) are factors, f(1) and f(-1) must equal zero. Therefore, we can set the two equations equal to zero and solve for a and b:
1 + a + b - 12 = 0
-1 + a - b - 12 = 0
Rearraning the equations, we have:
a + b = 11
a - b = 13
Now, we can solve this system of equations. Adding the two equations, we get:
2a = 24
a = 12
Substituting the value of a into one of the equations, we find:
12 - b = 13
b = -1
Therefore, the values of a and b are 12 and -1 respectively.

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6 + 12 = 25 -
Which value makes the number sentence true?
A. 6
B. 7
C. 12
D. 18

Answers

Answer:

7

Step-by-step explanation:

6+12=18

25-7=18

7 makes the sentance true.

Use differentials to estimate the amount of material in a closed cylindrical can that is 60 cm high and 24 cm in diameter if the metal in the top and bottom is 0.1 cm thick, and the metal in the sides is 0.05 cm thick. Note, you are approximating the volume of metal which makes up the can (i.e. melt the can into a blob and measure its volume), not the volume it encloses. The differential for the volume is

Answers

Answer:

dV ≈ 927.4 cm³

Step-by-step explanation:

Formula for volume of a cylinder is;

V = πr²h

Using differentials, we have;

dV = (dV/dr)dr + (dV/dh)dh

Now, dV/dr = 2πrh

dV/dh = πr²

Thus, at r = 24/2 = 12 cm

And at h = 60 cm, we have;

dV/dr = 2π(12 × 60)

dV/dr = 4523.89 cm²

Also;

dV/dh = π(12)²

dV/dh = 452.39 cm²

the metal in the top and bottom is 0.1 cm thick. Thus, dr = 2 × 0.1 = 0.2

the metal in the sides is 0.05 cm thick. Thus; dh = 0.05

Thus;

dV = (4523.89 × 0.2) + (452.39 × 0.05)

dV ≈ 927.4 cm³

Which of the folowing elements represent the whole? a. percentage b. base c. rate d. both a and b

Answers

Answer:

The answer is letter D

Explanation:

Hope it helps!

Answer:

D is the right answer

Explanation:

Help with math problems

Help with math problems

Answers

1. The solution to the system of equations is v = -3 and w = 4.

2. The solution to the system of equations is y = 6 and z = -2.

How to solve for -v + w = 7; v + w = 1?

To eliminate v, we can add the two equations:

(-v + w) + (v + w) = 7 + 1

2w = 8

w = 4

Substitute w = 4 into one of the equations to solve for v:

v + 4 = 1

v = -3

How to solve for y + z = 4; y - z = 8?

To eliminate z, we can add the two equations:

(y + z) + (y - z) = 4 + 8

2y = 12

y = 6

Substitute y = 6 into one of the equations to solve for z:

6 + z = 4

z = -2.

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PLEASE HELP ME FIRST ANSWER GETS BRAINLIST AND ANSWER MY OTHERS PLEASE

PLEASE HELP ME FIRST ANSWER GETS BRAINLIST AND ANSWER MY OTHERS PLEASE

Answers

Answer:

2. ad is the angle bisector of angle a

3. ad is perpendicular to bc

4. both are right angles as given

5. common

6. ASA congruence

f(x)=- square root x-2. +3

Answers

Answer:

Hi, The.

The domain of a function is the set of all possible values for x. The range is all possible values for y.

You should be able to see these pretty easily from the graph. If I understand your function correctly:

f(x) = square root(x+2) - 3

then x cannot be less than -2. Your domain is x > -2. In interval notation [-2,∞)

The lowest value for y is -3 so the range is y > -3. In interval notation [-3,∞)

Hope this helps!

4 + 3 (3 × 2)² - 1

how do I set up the account?​

Answers

Answer:

4+(9*6)^2-1

Step-by-step explanation:

Marco wants to know how much the other students in his mathematics class study. He recorded the data he collected in
the following table.
Time spent studying per week (in hours)
2.0
5.0
1.0
2.5
2.5
3.5
0.0
4.5
2.5
4.0
3.5
3.0
2.0
1.5
4.0
2.0
0.5
3.0
1.0
3.0
3.5
1.5

1. Construct a histogram for the data.

Marco wants to know how much the other students in his mathematics class study. He recorded the data

Answers

Answer:

Step-by-step explanation:

This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts.

What is the value of the expression 20/4 - (1/2 + 3 3/4)

Answers

Answer:

3/4

You need the LCD which is 4

3 + 1x2/2x2 + 3/4

3 + 2/4 + 3/4

3 + 2+3/4

3+5/4

3 + 1 1/4

20/4 - 4 1/4

20/4 - 4x4+1/4

20/4 - 17/4

5 - 17/4

5x4/4 - 17/4

20/4 - 17/4

3/4

The function f(x) = -2(4)²+1 +140 represents the number of tokens a child has x hours after arriving at an arcade.
What is the practical domain and range of the function?
Enter your answer by filling in the boxes to correctly complete the statements. If necessary, round to the nearest hundredth.

The practical domain of the situation is ?
The practical range of the situation is ?

The function f(x) = -2(4)+1 +140 represents the number of tokens a child has x hours after arriving at

Answers

The function f(x) = -2(4)²+1 +140 represents the number of tokens a child has x hours after arriving at an arcade.

The practical domain of the situation is all real numbers, since there is no restriction on the number of hours the child can spend at the arcade.

The practical range of the situation is [1,140], since the minimum value of the function is 1 and the maximum value is 140.

100 Points! Algebra question. Photo attached. Find the amplitude, if it exists, and period of the function. Then graph the function. Thank you!

100 Points! Algebra question. Photo attached. Find the amplitude, if it exists, and period of the function.

Answers

hello

the answer to the question is:

y = a cot(bx – c) + d

a = 1, b = 1/2, c = 0

the midline is y = d, so y = 0

the vertical stretch is 1, so label the y-axis so the inflection point of the curve is 1 above the midline, and the other inflection point is 1 below the midline

the period is:

T = π/b ----> T = 2π

the phase shift is:

PS = c/b ----> PS = 0

and also, there's no amplitude for tangent and cotangent, there is only the vertical stretch that takes the place of an amplitude

100 Points! Algebra question. Photo attached. Find the amplitude, if it exists, and period of the function.

Answer:

amplitude does not exist. period = 2π (360°)

Step-by-step explanation:

there is no amplitude for tan θ or cot θ, since there is no limit up or down (positive/negative infinity).

period for cot θ is π (180°)

period for cot 1/2 θ is 2π (360°)

100 Points! Algebra question. Photo attached. Find the amplitude, if it exists, and period of the function.

Find the path of a heat-seeking particle placed at point P on a metal plate with a temperature field T(x,y). Temperature Field: T(x,y)= 100 - x^(2) - 2y^(2).

Answers

As a result, the following parametric equations describe the motion of the heat-seeking particle: x = a - 2t and y = b - 4t

As per the question given,

To find the path of a heat-seeking particle placed at point P on a metal plate with a temperature field T(x,y) = 100 - x^(2) - 2y^(2), we need to use the gradient vector of T(x,y).

The gradient of T(x,y) is given by:

∇T(x,y) = (-2x, -4y)

The heat-seeking particle moves in the direction of maximum increase of temperature, so it moves in the direction of the gradient vector, that is, (-2x, -4y).

To find the path of the particle, we need to integrate the gradient vector starting at point P = (a,b), where a and b are the coordinates of the point on the metal plate where the particle is placed.

So the path of the heat-seeking particle is given by the following parametric equations:

x = a - 2t

y = b - 4t

where t is the parameter that represents time.

These equations represent a straight line in the direction of the gradient vector of T(x,y). The particle moves from point P in the direction of the gradient vector, with a speed proportional to the magnitude of the gradient vector.

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explain how to find 45% of a number


A-multiply the number by 0.45.
B-Divide the number by 4.5.
C-Divide the number by 45.
D-multiply the number by 4.5.​

Answers

the question is c your welcome
I think it’s either a or c

please help me answer this question thank you

please help me answer this question thank you

Answers

Answer:

A

Step-by-step explanation:

Oscar is building a fence and purchases three boards that each measure
2.91 meters long. How many meters of fence board did Oscar purchase?

Answers

Oscar bought 8.73 meters of fence board to build the fence.

The metric system and the International Systems of Units both use the metre (m), also spelt as meter, as the basic unit of length (SI). In the British Imperial and American Customary systems, it is equivalent to roughly 39.37 inches.

A fence is a building used to enclose a space, usually outdoors. It is often made of posts joined by boards, wire, rails, or nets.

Oscar purchases three boards that measure 2.91 meters long each to build a fence.

Let say the length of one board be x = 2.91 meters.

Then the total length of fence board Oscar purchases is:

= 3x = 3 × 2.91 meters = 8.73 meters

Hence Oscar purchased 8.73 meters of fence board.

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write a real-world situation that could be modeled by the equation 8+2x=6x. Then solve the problem.

Answers

Answer:

x = 2

Step-by-step explanation:

8 = 6x + -2x

8 = 4x

8 = 4x

4 4

2 = x

A salesperson at a jewelry store earns ​5% commission each week. Last​ week, Heidi sold 640 worth of jewelry. How much did Heidi make in​ commission? How much did the jewelry store make from ​sales?

Answers

Answer:

12,800 Dollars USD

Step-by-step explanation:

PLEASE HELP ILL MARK BRAINLYEST 100%

PLEASE HELP ILL MARK BRAINLYEST 100%

Answers

Answer:

the first one >

Step-by-step explanation:

Answer:

the answer is >

does anyone knows the solution of this

does anyone knows the solution of this

Answers

The complete solution to the system is 25/17, 61/17, 2/17 respectively.

How to find solution to a matrix system?

Using the Gauss-Jordan elimination method to find the solution of the system of linear equations represented by the given augmented matrix:

Starting matrix:

[1 -2/3 -1/3 | 1]

[1 -2 6 | -17]

[-3 -7 3 | -43]

Add Row 1 to Row 2 and Row 3:

[1 -2/3 -1/3 | 1]

[0 -4/3 17/3 | -18]

[0 -1 0 | -40]

Multiply Row 2 by -3/4:

[1 -2/3 -1/3 | 1]

[0 1 -17/4 | 27/2]

[0 -1 0 | -40]

Add Row 1 to Row 2 and Row 3:

[1 0 -7/4 | 19/2]

[0 1 -17/4 | 27/2]

[0 0 -17/4 | -13/2]

Multiply row 3 by -4/17:

[1 0 -7/4 | 19/2]

[0 1 -17/4 | 27/2]

[0 0 1 | 2/17]

Add Row 3 to Row 1 and Row 2:

[1 0 0 | 25/17]

[0 1 0 | 61/17]

[0 0 1 | 2/17]

Therefore, the solution of the system of linear equations is:

x = 25/17

y = 61/17

z = 2/17

So the solution is [25/17, 61/17, 2/17].

Thus the completed augmented matrix is:

[1 0 0 | 25/17]

[0 1 0 | 61/17]

[0 0 1 | 2/17]

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solve the inequality-2+4x<14

Answers

Answer: x<4

Step-by-step explanation:

If we break this down as

-2+4x<14 and we add 2 to both sides

4x+<16 and divide by 4

and you get x<4

PLEASE SHOW YOUR WORK ON HOW TO SOLVE THIS PROBLEM!! BEST ANSWER ILL GET MARKED BRAINIEST!

4x+5/x+7

Answers

Answer:

x = 2.4

Step-by-step explanation:

4x + 5 / x + 7
combine like terms

X + 4x = 5x

5 + 7= 12


12/ 5x

Divide

12 /5= 2.4

X= 2.4

Find x.
Finding an angle measure given extended triangles

Find x.Finding an angle measure given extended triangles

Answers

Answer:

108 degree

Step-by-step explanation:

the angle x is equals to 108 degree

Find x.Finding an angle measure given extended triangles

Signature of the Principle investigator on the final proposal implies his responsibility for the following except​

Answers

The signature of the Principal Investigator on the final proposal does not imply responsibility for the availability of funding or the financial aspects of the project.

The signature of the Principal Investigator (PI) on the final proposal does not imply responsibility for certain aspects of the project beyond their control or expertise. While the PI plays a crucial role in leading and overseeing the research project, there are certain areas for which they may not bear direct responsibility.One aspect the PI may not be responsible for is the availability of funding. Although they may have been involved in securing the initial funding or writing the budget proposal, the final decision and availability of funds typically lie with funding agencies, institutions, or sponsors. The PI's signature on the proposal signifies their commitment to the project but does not guarantee funding.Additionally, the PI may not be accountable for the technical or scientific success of every aspect of the project. Research projects often involve interdisciplinary collaborations and multiple team members who contribute their expertise. The PI's signature signifies their leadership and overall responsibility, but they rely on the expertise and contributions of other team members for specific tasks and outcomes.Furthermore, the PI may not bear sole responsibility for external factors that can impact the project, such as changes in regulations, unforeseen events, or external market conditions. While they may adapt the project's direction and approach as needed, these external factors are beyond their direct control.In summary, the signature of the Principal Investigator on the final proposal does not imply responsibility for funding availability, technical success of every aspect, or external factors that may influence the project. The PI's role is primarily centered around leadership, coordination, and overall project management.

The complete question should be What does the signature of the Principal Investigator on the final proposal NOT imply responsibility for?

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Does the expression x^3-1 divided by x^2 -1 simplify to x?

Answers

No, the expression (x^3 - 1) / (x^2 - 1) does not simplify to x.

To simplify the expression, let's first factorize both the numerator and denominator.

The numerator can be factorized using the difference of cubes formula: a^3 - b^3 = (a - b)(a^2 + ab + b^2). So, we have (x^3 - 1) = (x - 1)(x^2 + x + 1).

The denominator is a difference of squares: a^2 - b^2 = (a - b)(a + b). Therefore, (x^2 - 1) = (x - 1)(x + 1).

Now, we can simplify the expression by canceling out the common factors in the numerator and denominator:

[(x - 1)(x^2 + x + 1)] / [(x - 1)(x + 1)]

The (x - 1) terms cancel out, leaving us with:

x^2 + x + 1 / (x + 1)

So, the simplified form of the expression is (x^2 + x + 1) / (x + 1), which is not equal to x.

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What is the unit price of a Mt. Dew if a six packs costs $2.70

Answers

Answer:

270 uits

Step-by-step explanation:

The surface area of a prism is modeled by the equation S = Ph + 2B, where S is the surface area, P is the perimeter of the base, h is height of the prism, and B is the area of the base.A. Solve the equation S = Ph + 2B for the perimeter P of the base.B. A rectangular prism has a height of 4 meters, a surface area of 96 square meters, and a base area of 8 square meters. Calculate the perimeter of the base of the prism.In your final answers, include all of your calculations.

Answers

Given:

The surface area of a prism is given by:

\(S=Ph+2B\)

Where, S= surface area, P=perimeter h= height B = base area

A) Solve the equation for perimeter P of the base:

\(\begin{gathered} S=Ph+2B \\ Ph=S-2B \\ P=\frac{S-2B}{h} \end{gathered}\)

B) Height =4 meters

Surface area=96 square meters

Base area= 8 square meters

Calculate Perimeter

Substituting these values in equation obtained in part A

\(\begin{gathered} P=\frac{96-2\times8}{4} \\ =\frac{96-16}{4} \\ =\frac{80}{4} \\ =20\text{ meters} \end{gathered}\)

hence, the perimeter of the base of prism is 20 meters.

x-9=y+2
is it linear or nonlinear

Answers

Answer:

x - 9 = y +2 => y = x - 11

It is linear because the exponent of x number is equal to 1.

A cylindrical can of internal radius 20 cm stands upright on a flat surface. It contains water to a depth of 20 cm. Calculate the rise in the level of the water when a brick of volume 1500 cm3 is immersed in the water. ​

Answers

What concept does this painting illustrate?

a painting showing a large white woman walking over the hills and forests of the countryside += with a people driving covered wagon, stagecoaches, and trains. She holds a cable in her hands and strings it on poles as she walks. White settlers walk beside her. In front of her, Native American families and bison run away. train at her feet.

Manifest Destiny
Gold Rush
Land Boom
67





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