Trigonometry question

Mathematics

1 answer:

ehidna [41]2 years ago

6 0

Answer:

The scale factors that make figure smaller are the option D. -0.5 and the option E. 0.25

Step-by-step explanation:

we know that

If the absolute value of the scale factor is greater than 1, then the image will be larger than the pre-image.

If the absolute value of the scale factor is less than 1, then the image will be smaller than the pre-image.

If the absolute value of the scale factor is equal to 1, then the image will be the same size than the pre-image.

Additionally, a negative scale factor causes the dilation to rotate 180 degrees

therefore

In this problem

The scale factors that make figure smaller are the option D. -0.5 and the option E 0.25

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What is 5/7 - 2/3 • 15/14

zimovet [89]

5/7-2/3x 15/14
2/3x15/14=5/7
5/7-5/7=0
0

7 0

3 years ago

Pleaseeeee answer this questionnnn it would mean alot please show work and explain thanks☺

Juli2301 [7.4K]

Answer:

Shown in the picture

Step-by-step explanation:

Set the value of x to "5" and "30" to find the corresponding values of y (i.e. the altitudes of the plane at 5 or 30 minutes after beginning descent).

Use the the same method to determine the set of coordinates (/ordered pairs) at each of the values for x given in part B of the question.

The initial value is simply the starting value of y, or in other words, the altitude at which the plane begins to descend in this context;

So it will be 0 mins after the beginning of descent of the plane, i.e. when x = 0, therefore the answer is (0, 28000) as an ordered pair or simply 28000 ft.

Rate of change is a fancy or more technical way of referring to the gradient of a function;

In this case of the context of a plane descending, it refers to the change in altitude over time;

This can be calculated using any two ordered pairs (or coordinates as I call them) using the formula of the difference in the y values divided by the difference in the x values.