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dimulka [17.4K]
3 years ago
8

What is the reason for statement 3 in the proof?. Prove –d + (d + e) = e. StatementReason. 1–d + (d + e) = (–d + d) + e1. Associ

ative Property of Addition. 2= 0 + e2. Additive Inverse Property. 3= e3. ____________________. A. Definition of Addition. B. Identity Property of Addition. C. Commutative Property of Addition. D. Distributive Property
Mathematics
2 answers:
Elena-2011 [213]3 years ago
6 0
The correct answer to this question is letter "B. Identity Property of Addition." The reason for statement 3 in the proof is using the i<span>dentity Property of Addition.

</span>

when u add 0 to some number, u get the original number back.

e-lub [12.9K]3 years ago
6 0
<h2>Answer:</h2>

Option: B is the correct answer.

   B. Identity Property of Addition.

<h2>Step-by-step explanation:</h2>

We know that identity under addition is the element which when added to any elements  gives the resultant as the same element.

i.e. if e is the identity of the set then,

       a*e=a for all a belongs to the set, where * is the operation

We know that under addition operation the identity is the zero element.

Because if zero is added to any element than it gives the same element.

Reason. 1       -d+(d + e)=(-d+d)+e    1. Associative Property of Addition.

Reason 2               = 0 + e                2. Additive Inverse Property.

Reason 3                   = e                  3. Identity Property of Addition.

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A survey with a two-point scale was conducted in an organization. It concluded that 85% of the respondents were unsatisfied with
Morgarella [4.7K]

Answer:

Number of the peoples were satisfied with the career guidance are 300 .

Step-by-step explanation:

Formula

Percentage = \frac{Part\ value\times 100}{Total\ value}

As given

A survey with a two-point scale was conducted in an organization.

It concluded that 85% of the respondents were unsatisfied with the career guidance they were provided.

If 2,000 people participated in the survey.

Total value = 2000

Percentage = 85%

Putting all the values in the formula

85 = \frac{Part\ value\times 100}{2000}

Part\ value= \frac{2000\times 85}{100}

Part\ value= \frac{170000}{100}

Part value = 1700

i.e

People not satisfied by the career guidance = 1700

People satisfied by the career guidance = Total people participated in survey  - People not satisfied by the career guidance .

Putting the values in the above

                                                                  = 2000 - 1700

                                                                  = 300

Therefore the number of the peoples were satisfied with the career guidance are 300 .


5 0
3 years ago
Read 2 more answers
Help me do this please
Rom4ik [11]
Use the distributive property.
(3/8)*(16x-24)=(3/8)(16x)-(3/8)(24)
16x*3/8=48x/8=6x
24*3/8=72/8=9
6x+9

Hope this helps!
4 0
3 years ago
Find the following: F(x, y, z) = e^(xy) sin z j + y tan^−1(x/z)k Exercise Find the curl and the divergence of the vector field.
natulia [17]

\vec F(x,y,z)=e^{xy}\sin z\,\vec\jmath+y\tan^{-1}\dfrac xz\,\vec k

Divergence is easier to compute:

\mathrm{div}\vec F=\dfrac{\partial(e^{xy}\sin z)}{\partial y}+\dfrac{\partial\left(y\tan^{-1}\frac xz\right)}{\partial z}

\mathrm{div}\vec F=xe^{xy}\sin z-\dfrac{xy}{x^2+z^2}

Curl is a bit more tedious. Denote by D_t the differential operator, namely the derivative with respect to the variable t. Then

\mathrm{curl}\vec F=\begin{vmatrix}\vec\imath&\vec\jmath&\vec k\\D_x&D_y&D_z\\0&e^{xy}\sin z&y\tan^{-1}\frac xz\end{vmatrix}

\mathrm{curl}\vec F=\left(D_y\left[y\tan^{-1}\dfrac xz\right]-D_z\left[e^{xy}\sin z\right]\right)\,\vec\imath-D_x\left[y\tan^{-1}\dfrac xz\right]\,\vec\jmath+D_x\left[e^{xy}\sin z}\right]\,\vec k

\mathrm{curl}\vec F=\left(\tan^{-1}\dfrac xz-e^{xy}\cos z\right)\,\vec\imath-\dfrac{yz}{x^2+z^2}\,\vec\jmath+ye^{xy}\sin z\,\vec k

5 0
3 years ago
Janie walks 1 mile to get to a running track.she then runs at a speed of 3.5 miles per hour.Which linear models represents the t
MrMuchimi

Answer:

d = 3.5t + 1

Step-by-step explanation:

The linear function would have to multiply the speed she runs at the track by the number of hours that she spent running. Then it should add this amount to the 1 mile that she walked to get to the track. If we use the variable d as the total distance that she ran and walked, and the variable t to represent time then we would create the following linear function/model.

d = 3.5t + 1

3 0
3 years ago
If an equation is an identity, then how many solutions does it have?
Alona [7]
Since they are the same, any change made to 1 will be the same in the other, resulting in infinite solutions.
7 0
3 years ago
Read 2 more answers
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