Select the equivalent expression
1 answer:
You might be interested in
Answer:
We know that there are four types of rigid transformations namely Dilation, Translation, Reflection and Rotation.
Now, Dilation is the transformation that changes the size of the figure by some scale factor i.e. it is the transformation that increases or decreases the size of the given figure.
We can see in the first figure that the triangle ABC is dilated ( increased by some scale factor ) to form A'B'C'.
Further, Translation is the transformation that slides the figure horizontally or vertically to a fixed distance.
The second figure shows the change of position of the solid ABCD to the position of A'B'C'D'.
Now, Reflection is the transformation that flips the image about a straight line.
During reflection, the size of the figure remains same but the it goes to the opposite side of the line.
We can see from the third figure the reflection of ABC about the y-axis to form A'B'C'.
Finally, Rotation is the transformation that turns the image about a fixed point called the center of rotation to a certain degree.
So, in the last figure, we see that the image A is rotated about the center of rotation by 120° to form A'.
Hence, we see that Dilation is different from the other transformations.
Answer:
<em>Kaya found 25 shells on the beach yesterday.Today she found 25 more shell. She sorted all the shells into 5 pile.Which equation can be used to find how many shells are in each pile? </em>
<em>A.s=(25+25)÷5 </em>
<em>B.s=25÷5 </em>
<em>C.s=(25+25)-5</em>
Equation A can be used to find the number of shells in each piles.
Step-by-step explanation:
Given:
Number of shells Kaya found day before =
Number of shells she found today =
According to the question:
She sorted it into piles meaning we have to equally put them in each pile, for this we have to divide the total number of shells.
Let the number of shells in each pile =
And total number of shells =
So,
The number of shells in each pile.
⇒
⇒
⇒
From equation where,
gives the same answer.
Then option A is the right choice.
