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Alexandra [31]
3 years ago
15

Which graph can be used to find the solution(s) to x^2-1=3?

Mathematics
2 answers:
olga2289 [7]3 years ago
6 0

First of all, you need to attach images for this one. Second of all, graph it in desmos and compare. Thirdly, whichever looks like this.


BabaBlast [244]3 years ago
6 0

Answer:

Hello there the answer is D

Step-by-step explanation:

You have to look at the graph first.

Since the equation is = 3 you can simply eliminate A,C

So that leaves us with B,D

Then this is how I know graphs is that the line will be horizontal if it’s by its self so the answer would be D

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Please help me with # 3
sladkih [1.3K]

Answer:

The exterior angles need to equal 360 degrees.

You have 70 + 65 + 75 = 210

So 2x + 3x need to equal 360 - 210 = 150

5x = 150

x = 150 /5 = 30

2x = 2 *30 = 60

3x = x *30 = 90

An interior angle and an exterior angle need to equal 180 degrees.

The largest interior angle would need to correspond with the smallest exterior angle.

The smallest exterior angle is 2x which equals 60 degrees.

The largest interior angle would be 180 - 60 = 120 degrees.

4 0
3 years ago
Point F is on circle C. What is the length of line segment GF?
Levart [38]
The answer:
the full question is as follow:
<span>Point F is on circle C. What is the length of line segment GF?

12.5  units
15.0  units
17.5  units
20.0  units

according to the image, GF= GC + CF

CF is the radius of the circle, so it is CF =CE = 7.5
all that we want to find is the value of GC
let's consider the triangle GEC. This is a right triangle, so for finding GC, we can apply Pythagorean theorem

that is, GE² + EC² = GC², and from this, we have GC = sqrt(</span>GE² + EC² )

GC = sqrt(10² + 7.5² )=sqrt(56.25)=12.5
<span>
therefore, </span>GF= GC + CF=12.5 + 7.5 = 20.0
the answer is 20.0  units

8 0
3 years ago
Read 2 more answers
Find the area A if b = 14 cm and h = 6 cm
kipiarov [429]
(14)(6)=84 (base)(height)
4 0
3 years ago
Express in simplest radical form.<br> V40
Andrews [41]

Answer:

\huge\boxed{2 \sqrt{10}}

Step-by-step explanation:

When taking a square root and making it a radical, we need to list out it's factors and find which one we can take the square root of.

The factors of 40 are:

1, 2, 4, 5, 8, 10, 20, 40.

Out of these, we need to look for one that we can find the square root of.

We know that the square root of 4 is 2.

Therefore, we can make \sqrt{40} into \sqrt{4 \cdot 10}.

The square root of 4 is 2. Therefore, we can put that outside the radical.

2 \sqrt{10}.

Hope this helped!

7 0
3 years ago
What is an expression for 5(9m+2n-6m)
Elis [28]
45m+10n-30m
15m+10n

I believe this is right.
6 0
3 years ago
Read 2 more answers
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