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3 years ago

Select the property that allows the left member of the equation to be changed to the right member.

2 answers:

8 0

Commutative - addition.

You're switching a and b to get the same answer. It works with Multiplication too, as you can tell!

guapka [62]3 years ago

3 0

Answer:

commutative - addition property

Step-by-step explanation:

Given : b + a = a + b

To find : Select the property that allows the left member of the equation to be changed to the right member.

Solution : We have given b + a = a + b

By the commutative - addition property : x + y = y +x

Example : 4 +5 = 5 +4

9 = 9.

If we inter change the left member of equation to the right member of the equation it will not affect.

Hence it is shows the commutative - addition property.

Therefore,commutative - addition property

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The sum of two numbers is -18. If the first number is 10, which equation represents this situation, and what is the second numbe

Oksana_A [137]

Answer:

Step-by-step explanation:

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3 years ago

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Answer:

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3 years ago

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If sin Θ = negative square root 3 over 2 and π < Θ < 3 pi over 2, what are the values of cos Θ and tan Θ? cos Θ = negative

andreev551 [17]

Answer:

The correct option is the option with:

cos Θ = 1/2

tan Θ = -√3

Step-by-step explanation:

Given that

sin Θ = -√3/2

We want to find the values of

cos Θ and tan Θ

First of all,

arcsin (-60) = -√3/2

=> Θ = 60

tan Θ = (sin Θ)/(cos Θ)

tan Θ = (-√3/2)/(cos Θ)

cos Θ tan Θ = (1/2)(-√3)

Knowing that Θ = -60,

and cos Θ = cos(-Θ), comparing the last equation, we have

cos Θ = 1/2

tan Θ = -√3

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3 years ago

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A sequence of two transformations that can be used to show that polygon ABCDE is congruent to polygon GFJIH

Burka [1]

Two transformations that can be used to show that polygon ABCDE is congruent to polygon GFJIH : <u>rotation -90° and translation (0,2)</u>

<h3>Further explanation</h3>

There are several forms of transformation, including translation, dilation, rotation or reflection

There are 2 shapes of geometry:

Similar figures:

the same shape but different in size,

Congruent figures:

the same size and the same shape

Both polygons will appear congruent if, after being transformed, the two polygons will map exactly to each other

A sequence of two transformations e can do is :

1. rotation -90°

Let point H(4,1) from polygon GFJIH , we rotate -90°

$\left[\begin{array}{ccc}x'\\y'\end{array}\right]=\left[\begin{array}{ccc}0&1\\-1&0\end{array}\right]\left[\begin{array}{ccc}4-6\\1+1\end{array}\right]+\left[\begin{array}{ccc}6\\-1\end{array}\right]\\\\=\left[\begin{array}{ccc}0&1\\-1&0\end{array}\right]\left[\begin{array}{ccc}-2\\2\end{array}\right]+\left[\begin{array}{ccc}6\\-1\end{array}\right]\\\\=\left[\begin{array}{ccc}8\\1\end{array}\right]$