The answers are B C and D it will help if you just add the two numbers together if they are positive and subtract if they are negative
Answer:
Mrs. Stewart paid $86.25 for all the books.
Step-by-step explanation:
With the information provided, you have to add the result of multiplying the nine books for its price plus the remaining books for the price per book. To find the number of the remaining books you can substract the nine books from the total amount Mrs. Stewart purchased.
Cost=(9*4.95)+((15-9)*6.95)
Cost=44.55+41.7
Cost=86.25
According to this, the answer is that Mrs. Stewart paid $86.25 for all the books.
Answer:
Option A and C have rotational symmetry.
Step-by-step explanation:
The graph of odd functions have rotational symmetry about its origin.
Here the first graph is a graph of f(x)= which is an odd function bearing an exponent of 3.
A function is "odd" when we plug in any negative value in then it gives negative of .
And we also know that when a graph is mirroring about the y-axis then it is an even functions.
For even functions we have reflection symmetry rather than rotational symmetry.
The second graph is a graph of which is an even function as we can see that its graph is mirroring about the y-axis.
The third graph is a graph of an ellipse which is possessing rotational symmetry.
The order of symmetry of an ellipse is generally 2.
Order of symmetry:
The order of rotational symmetry of an object is how many times that object is rotated and fits on to itself during a full rotation of 360 degrees.
So graph A and C have rotational symmetry.
Answer:
Perimeter of triangle CDE = 56
Step-by-step explanation:
Here, we want to find the perimeter of CDE
mathematically, when the measure of the inner triangle is half of the respective sides of the bigger
What this mean is that for each side that one of the side of the inner triangle faces, the measure on the bigger triangle is twice
Thus, 9 represents a length of 2(9) = 18 on the bigger triangle
Also, 7 will represent a length of 2(7) = 14 on the bigger triangle
So, now we have the complete sides of the bigger triangle
The measure of the perimeter is simply the addition of the respective side lengths
We have the perimeter of the large triangle as;
24 + 18 + 14 = 56
Your answer would be D. 225%. 9/4 equals to 2.25 which multiplied but a 100 to make the percentage equals 225%.