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Aleonysh [2.5K]
3 years ago
15

Given a parabola with the vertex at the origin and the directrix at x=7 determine the direction the parabola opens. A. down B. l

eft C. right D. up
Mathematics
2 answers:
valkas [14]3 years ago
6 0
It will open to the left

because the directrix is a vertical line through x=7  and the focus will be on negative side of the x axis
Valentin [98]3 years ago
5 0
I think the answer is b but im not sure
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Dmitrij [34]
A rhombus would answer your question. Hope this helped sorry if im wrong.
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3 years ago
Yvette is trying to calculate the distance between point C(1, 2) and point D(7, 10). Which of the following expressions will she
Inessa05 [86]
She Would Use THE First Option
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Suppose the expression a(b)n models the approximate number of people who registered for a dance program every day since the regi
kodGreya [7K]

There were 2.07 times as much people that applied in the fourth month than in the first month.

<h3>What is an exponential function?</h3>

An exponential function is one that grows or decreases in an exponential manner. Thus, for any exponential function we can write; f(x) = ax^±n. The term a is the initial value x is the rate of change while n is the time elapsed. The positive sign is used for an exponential increase while the negative sign is used for an exponential decrease.

Thus we have;

f(x) = 27(1.2)^4

This shows us that the time elapsed is four months and f(x) = 2.07.

Therefore, there were 2.07 times as much people that applied in the fourth month than in the first month.

Learn more about exponential function:brainly.com/question/11487261?

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4 0
2 years ago
Whats 14 to the 2nd power
ExtremeBDS [4]

Answer: 130.666

Step-by-step explanation:

4 0
3 years ago
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The figure for the other questions
stira [4]
I can't really measure the angles. I can tell you what they look like they'd be. There are three reasons why not. 
1. The paper is slightly bulged where your hand is
2. The circle is slightly distorted by the camera. This  is not that critical. 
3. It is very hard to measure on a computer screen.
There is nothing you could do to make it any better. In fact, given what you had to do, this is a pretty good representation. 

The Three angles -- Question 22
Using the crudest tools you could imagine, I measured the angle where you have written two 90s between the arms as 132°. That angle opens towards the bottom of the page.

The angle that you have called 95 degrees is actually pretty close. I think you read the upper set of numbers on the protractor when you should have been reading the lower set. I make it 89, but I'll bet it is intended to be 90 degrees. 

The third angle on your right is the same as the first one. It comes in at about 132° using my tools again. 

Question 23
I can help you with this. When you are asked to make an equation, you have to use an equal sign somewhere. 

The sum of the three angles should be 360° I'm going to create an error term because I'm almost sure what I measured won't make 360. All circles when you make angles from any point inside them should make angles that add up to 360° when measured with a protractor if the rays of the angles all start from the same point. [If you don't know what a ray is, call it "the arms of the angles"].

So let's create the equation.
Angle1 + angle2 + angle3 + E = 360°
Angle1 = 89° 
Angle2 = 132°
Angle3 = 132°
E is the error that represents the amount away from 360. Your teacher doesn't expect you to get this or to set it into your equation. The main thing you were supposed to do is add up the angles as you tried to do and state what your total was. This is what was expected.
Total = angle1 + angle2 + angle3
Total = 89 + 132 + 132 = 353. My error is 7° too little. So in my equation E = 7°

What to do
Somebody had to mark this with that green felt. You have a teacher. Go to the teacher and ask to be shown how to read the protractor if that person knows. You just need a bit of help. If the teacher cannot tell you, go to someone in your class who knows about that sort of thing and ask them. You're pretty close to getting it.

6 0
3 years ago
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