Mai solved the equation incorrectly. Identify and explain Mai’s error.


I’m correcting a test plz help

Answer:

It would be changing by which a person thinks.

But, I will pick 569.124.

It would be 5.69124e2. (or 5.6912 x 10^3)

Answer:

569.124

Step-by-step explanation:

The miles from the starting line does which jackie's horse catch up to Anabel's is 1.4 miles.

Let the distance covered by Jackie's horse be 'd'.

Let the time taken be 't'.

Distance = time * rate

Jackie's horse travelled distance; d = 28t   .....eq1

Anabel's horse travelled the distance d = 24t + 1/5.  .....eq2

Equating equation 1 and 2.

28t = 24t + 1/5

Simplifying.

4t = 1/5

t = 1/20 hour.

The same distance can be covered in 1/20 hour ;

Put the value of t in eq 1.

d = 28t

d = 28(1/20)

d = 12/5 miles

d = 1.4 miles

Thus, the miles from the starting line does which jackie's horse catch up to Anabel's is 1.4 miles.

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Answer:

14 miles

Step-by-step explanation:

Length of the trail = 70 miles

Let x miles be the distance that Alan has already covered from the beginning of the trial

Then the remaining distance to the end of the trail = 70 - x miles

We are given that 4 times the remaining distance is the distance already covered

Therefore x = 4(70-x)

x = 4 · 70 - 4x

x = 280 - 4x

x + 4x = 280

5x = 280

x = 280/5

or

x = 56

So distance covered = 56 miles

The distance that Alan still has to hike = 70 - 56 = 14 miles

So, the distance Alane still has to hike is the entire length of the trail, which is: y = 70 miles.

Let's start by assigning variables to the unknowns in the problem.

Let's call the distance Alan has hiked "x" and the distance he has left to hike "y". We know that the trail is 70 miles long, so we can set up an equation:

x + y = 70

We also know that after a few days, Alan's distance from the beginning of the trail (let's call that distance "d") is four times as far as he is from the end of the trail (which is 70 - d). So we can set up another equation:

d = 4(70 - d)

Simplifying this equation, we get:

d = 280 - 4d
5d = 280
d = 56

So Alan is 56 miles from the beginning of the trail and 14 miles from the end of the trail. Now we can go back to our first equation and solve for y:

x + y = 70
x + 56 + 14 = 70
x + 70 = 70
x = 0

So Alan has not hiked any distance yet, and the distance he still has to hike is the entire length of the trail, which is:

y = 70 miles

Therefore, the distance Alan still has to hike is 70 miles.

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Answer:

10 kg = 10g = 10 mg

Hope this helped ;)

Let's denote the time it takes for the slower pipe to fill the tank on its own as $x$ hours. Then, the faster pipe takes $x-3$ hours to fill the tank on its own. We can use the formula for the rate of work to set up an equation: $r_1 + r_2 = \frac{1}{2}$, where $r_1$ and $r_2$ are the rates of work for each pipe.

We can express the rate of work in terms of the time it takes for each pipe to fill the tank on its own: $r_1 = \frac{1}{x}$ and $r_2 = \frac{1}{x-3}$. Substituting these expressions into the equation above and solving for $x$, we obtain $x=2$. Therefore, the slower pipe takes 2 hours to fill the tank on its own, and the faster pipe takes $2-3=-1$ hour, which doesn't make physical sense. This means there is an error in the problem statement.

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Answer:

2000+ (2000× .04x)

Step-by-step explanation:

2000 people plus the percent that it grows, found by multiplying .04 (4%) by the original number. the x is the number of years

Answer:

im pretty sure its B becuase  Richard owes more

Step-by-step explanation:

is that Florida vertual school? it looks like what i used to do

Answer:

26

Step-by-step explanation:

130-20%=104

25% of 104 is=26

Parallel Lines

Given the equation of a line as:

y = mx + c

The variable m represents the slope or the gradient of the line, and c represents the y-intercept of the line.

If two lines are parallel, they have the same gradient, i.e., their value of m is equal for both and c is different. Note if c was equal also, both lines would be exactly the same, not parallel.

We are given a number of pairs of lines and we must identify which pairs are parallel lines.

a) y = 3x + 4, y = 3x - 8

Comparing the values of m (the coefficient of x) in both equations, we conclude they are parallel lines since m=3 for both and c is different.

b) y = 2x - 17 , y - 2x = 17

We must express the second equation with the y isolated at the left side:

y = 2x + 17

Both lines have the same value of m=2 and different values of c, so they are parallel.

c) y = x - 4 , y = -2x - 4

The first gradient is m=1 and the second gradient is m=-2, thus these lines are not parallel

d) 3y + 3x = 9 , y = x + 3/2

Divide the first equation by 3:

y + x = 3

And solve for y:

y = -x +3

The gradient of this line is -1 and the gradient of the other line is m=1, thus these lines are not parallel.

e) 2x = y + 8 , 2y = x + 8

Solving for y both equations:

y = 2x - 8

y = x/2 + 4

The gradients are m=2 and m=1/2 respectively, thus these lines are not parallel.

f) 3 - x = 3y , y - 3x = 5

Solving for y:

y = -x/3 + 1

y = 3x + 5

The gradients are, respectively m=-1/3 and m=3, thus these lines are not parallel.

g) 4y + 8x = 0 , y = 22 - 2x

Solving for y and rearranging:

y = -2x , y = -2x + 22

The gradients are m=-2 for both lines and the values of c are different, thus these lines are parallel.

h) y = 2x - 8 , 8y + 8x = 9

Solving the second equation for y:

y = -x + 9/8

The gradients are, respectively m=2 and m=-1, thus these lines are not parallel.

The following image summarizes the results by circling the pairs of parallel lines as required.

A number that cannot be written as a simple-fraction is called an irrational number.

The "Irrational-Numbers" are defined as numbers which cannot be expressed as ratio of two integers,

The Irrational-Numbers cannot be written in form of "p/q" where "p" and "q" are integers where q ≠ 0.

The Irrational numbers are generally represented as decimal numbers that go on without repeating, for example : π = 3.14159265359... or √2 = 1.41421356237... They are infinitely precise and cannot be represented exactly in decimal form.

There are many examples of irrational numbers, and they are used in a variety of mathematical and scientific applications.

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Given, \(x²-1/x1x42x² + 1=lim   x²-1/x1x42x² + 1\)The required limit is of the form 0/0 which is an indeterminate form.

So, by using L'Hospital's rule,lim  \(x²-1/x1x42x² + 1=lim   d/dx[x²-1]/d/dx[x1x42x² + 1] =lim   2x/(4x^4+1/x^4)=0/1=0\)

\(Given, lim   ln(2x + 1) - ln(x + 2) x →[infinity]0=lim   ln(2x + 1)/(x+2) x →[infinity]0\)

The required limit is of the form ∞/∞ which is an indeterminate form.

\(So, by using L'Hospital's rule,lim ln(2x + 1)/(x+2) x →[infinity]0=lim   2/(2x+1)/(1)=2/1=2

Given, lim sin x/x²=lim 1/x(cos x/x)=lim 1/x[1/(-x)](as cos(-x)=cos(x))=-1/0-=-∞Given, lim 3 -πχ²/x + cos x x→[infinity]0=lim 3/x -πχ²/x + cos xAs x→[infinity]0, 3/x→0 and πχ²/x→0\).

Also, the cost oscillates between -1 and 1.

Thus, a limit does not exist. Given, \(lim 9x²/17x + 100=lim 9x/17 + 100/x\)

The required limit is of the form ∞/∞ which is an indeterminate form.

\(So, by using L'Hospital's rule,lim 9x/17 + 100/x=lim 9/17 + 0=9/17\)

\(Therefore, the limit of each of the given problems is as follows:lim   x²-1/x1x42x² + 1=0lim   ln(2x + 1) - ln(x + 2) x →[infinity]0=2lim sin x/x²=-∞lim 3 -πχ²/x + cos x x→[infinity]0=Limit Does Not Existlim 9x²/17x + 100=9/17\)

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Answer:

A,D

Step-by-step explanation:

5x4x6=120

10x3x4=120

Answer:

A, D

Step-by-step explanation:

5 x 4 = 20 x 6 = 120

10 x 3 = 30 x 4 = 120

Therefor, A and D both equal 120 ft.

Answer:

5 down 7 across

Step-by-step explanation:

Answer:

{-5,15}

Step-by-step explanation:

because this function is constantly decreasing, we can get our range by looking at the endpoints:

f(-5) = 15

f(5) = -5

Answer:

2/3

Step-by-step explanation:

.that's the answer

Answer:

3

Step-by-step explanation:

distance formula

The water where the submarine reaches the bottom is approximately 212.43 meters deep.

To determine the depth of the water where the submarine reaches the bottom, we can use trigonometry.

The angle of depression of 13° tells us that the submarine is diving at an angle below the horizontal line.

The distance traveled diagonally, which is 890 meters, represents the hypotenuse of a right triangle.

Using trigonometric functions, we can find the length of the adjacent side, which represents the depth of the water.

In this case, we can use the tangent function:

tan(13°) = opposite/adjacent

We know the opposite side is the depth we're trying to find, and the adjacent side is the distance traveled diagonally.

Solving for the depth:

\(depth = 890 \times tan(13) \approx 212.43 meters\).

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Answer:

ANGLES-

P=S

O=i

L=D

Y=E

SIDES-

PO=SI

OL=ID

LY=DE

YP=ES

Step-by-step explanation:

pretend the equal signs are congruency signs

To find the flux of the vector field \(F(x, y, z) = \langle z, y, x \rangle\) over the unit sphere \(x^2 + y^2 + z^2 = 1\), we can use the Divergence theorem. The Divergence theorem relates the flux of a vector field across a closed surface to the divergence of the vector field over the region enclosed by the surface. By applying the Divergence theorem, we can convert the surface integral into a volume integral and calculate the flux.

The Divergence theorem states that for a vector field \(\mathbf{F} = \langle F_1, F_2, F_3 \rangle\) and a closed surface \(S\) enclosing a region \(V\), the flux of \(\mathbf{F}\) across \(S\) is equal to the triple integral of the divergence of \(\mathbf{F}\) over \(V\).

In this case, we have \(\mathbf{F}(x, y, z) = \langle z, y, x \rangle\) and the unit sphere \(x^2 + y^2 + z^2 = 1\). To find the flux, we first compute the divergence of \(\mathbf{F}\), which is given by \(\nabla \cdot \mathbf{F} = \frac{\partial F_1}{\partial x} + \frac{\partial F_2}{\partial y} + \frac{\partial F_3}{\partial z}\). Evaluating the partial derivatives, we find \(\nabla \cdot \mathbf{F} = 1 + 1 + 1 = 3\).

Applying the Divergence theorem, the flux of \(\mathbf{F}\) across the unit sphere is equal to the triple integral of \(\nabla \cdot \mathbf{F}\) over the volume enclosed by the sphere. Since the unit sphere has a radius of 1, the volume integral becomes \(\iiint_V 3 \, dV\), which simplifies to \(3 \cdot \text{Volume}(V)\). The volume of the unit sphere is \(\frac{4}{3}\pi\), so the flux is \(3 \cdot \frac{4}{3}\pi = 4\pi\).

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Rotation refers to the act or process of turning or spinning around a central axis or point. In physics and mathematics, rotation describes the circular or angular motion of an object or a system around a fixed point or axis.

It involves the movement of an object or system in a circular path, where each point on the object follows the same circular trajectory.The axis of rotation is an imaginary line or point around which the object rotates. All points on the object move in circles or arcs around this axis.

The angle of rotation measures the amount of turning or angular displacement of an object or system. It is usually expressed in degrees or radians.

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\(V = \frac{4}{3}\pi r^3\\r^3 = \frac{3V}{4\pi}\\r = \sqrt[3]{\frac{3V}{4\pi}}\)

\(r = \sqrt[3]{\frac{3*36\pi}{4\pi}} = \sqrt[3]{3*9} = \sqrt[3]{27} = 3\) m

Answer: B (3 m).

Answer:

36

x×2=24

2×=24

x=12

=24+12

=36

Answer:

16 Newton is the answer

Answer:

F=m.a

=8kg.2m/s²

=16kgm/s² ans/

9514 1404 393

Answer:

  y = -1.5x +3

Step-by-step explanation:

The two points marked on the line are ...

  (-4, 9) and (6, -6)

The slope formula can be used to find the slope:

  m = (y2 -y1)/(x2 -x1)

  m = (-6 -9)/(6 -(-4)) = -15/10 = -1.5

The intercept formula can be used to find the y-intercept:

  b = y -mx

  b = 9 -(-1.5)(-4) = 9 -6 = 3

The slope-intercept form of the equation for a line is ...

  y = mx + b . . . . . . . line with slope m and y-intercept b

  y = -1.5x +3

_____

Additional comment

We can see that the line crosses the y-axis at y=3, so this is the value of b. We only need to read it from the graph. We don't really need the formula shown above.

The line also crosses the x-axis at x=2. This means the line decreases 3 units (from y=3 to y=0) as x increases by 2 units (from x=0 to x=2). Then the slope is ...

  m = rise/run = (-3)/(2) = -3/2 = -1.5 . . . . as calculated above

That is, we can find the parameters of interest by simply counting grid squares on the graph.

Answer:

D they are similar

Step-by-step explanation:

they are similar

bc all of the other statements  say why they aren't similar which some are true but more than one therefore the statement that would be correct is D because

3 / 30 are equal

by 10

and

6/60

are also equal by

10

there like I exclaimed before they are equal

federal tax $92

SS Tax 50.59

Medicare Tax 11.83

State Tax 20.24

$174.66

Answer:

3/40

Step-by-step explanation:

Therefore, the answer is 3/40!