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Ivan
3 years ago
11

Please help me I need these answers

Mathematics
1 answer:
vlada-n [284]3 years ago
5 0
I think the second to last one.
You might be interested in
I want to know the answers
Naddik [55]

Answer:

1) 7x + 5

2) 7x + 5

3) 7x + 5

Step-by-step explanation:

idk bro

5 0
3 years ago
Please teach me how to solve part b, thank you.​
MA_775_DIABLO [31]

Part (a)

The locus is the set of points that satisfy the given conditions. Namely that the point P needs to be 1 unit from the line given.

Think of a median along a highway. Then imagine the two shoulders of the road. The locus describes the two parallel lines that are to this given median. In other words, the median is y = x+2 and the road shoulders are unknown for now.

Though we do know that parallel lines have equal slopes (but different y intercepts).

Therefore, the answers to the next section will be of the form y = x+k for some real number k.

=============================================================

Part (b)

Use your favorite graphing tool to plot y = x+2. I recommend GeoGebra since I use it all the time, and it's what I used to make the drawing below. Desmos is another tool you can use. Both are free.

Note that point A(0,2) is on the line y = x+2. The line perpendicular to y = x+2 and goes through (0,2) is y = -x+2. From here, plot a circle centered at (0,2) with radius 1. The equation of this circle is x^2 + (y-2)^2 = 1

The intersection points of the circle and y = -x+2 will provide starting points, so to speak, for the two shoulder lines I mentioned in part (a).

The approximate locations of those points are:

B = (0.71, 1.29)

C = (-0.71, 2.71)

From here, it shouldn't be too hard to find the y = mx+b forms of the locus lines. Let me know if you need help with that, or if you need me to check your answers.

Side note: Why is it called a locus? I'm not sure, but my gut feeling tells me it has to do with the insects of a similar sounding name (locus the math term and locust the insect). Imagine millions of them forming various shapes in the sky, similar to how many points are used in the 2D plane to create various curves.

5 0
2 years ago
Rewrite the function by completing the square.<br><br> f(x)=x^2-4x-26
Radda [10]

Answer:

(x-2)^2-30

Step-by-step explanation:

use the form ax^2+bx+c to find the values of a, b, and c.

a=1, b= -4, c = -26

consider the vertex form of a parabola

a(x+d)^2+e

substitute the values of a and b into the formula d=\frac{b}{2a}

d=\frac{4}{2(1)}

simplify the right side.

find the value of e using the formula e=c-\frac{b^2}{4a}

e=30

5 0
2 years ago
If smart please help me!!!!..!
Salsk061 [2.6K]

Answer:

<h2>None of the other answer are correct. </h2>

<h3>I HOPE IT WILL HELP YOU. </h3>

<h2>^ - ^</h2>
4 0
3 years ago
-5
skelet666 [1.2K]

Answer:

The Richter scale measures the largest wiggle (amplitude) on the recording, but other magnitude scales measure different parts of the earthquake. The USGS currently reports earthquake magnitudes using the Moment Magnitude scale, though many other magnitudes are calculated for research and comparison purposes.

4 0
3 years ago
Read 2 more answers
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