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SpyIntel [72]
2 years ago
5

Can you solve this? I need help. I don't understand.

Mathematics
1 answer:
ZanzabumX [31]2 years ago
8 0

Answer:

2 sqrt(5) OR 4.5

Step-by-step explanation:

You have to know Pythagorean theorem to solve this question.

a^2 + b^2 = c^2

To use this theorem you have to have a right triangle. There are two right triangles in your image. The lower (larger) one has two sides labeled, so you can use Pythagorean thm to find the third side. There's a short cut, bc some right triangles have easy-to-memorize lengths of the sides. 3-4-5 is one of these number sets. A multiple of this is 6-8-10. We could've solved:

b^2 + 8^2 = 10^2

But it would've come out the same. The unlabeled side is 6.

We can use the 6 and the 4 on the smaller right triangle and use the Pythagorean thm again to solve for x.

4^2 + x^2 = 6^2

16 + x^2 = 36 subtract 16 from both sides.

x^2 = 20

Take the square root of both sides.

sqrt (x^2) = sqrt 20

x = 2 sqrt(5) which is approximately 4.472.

2 sqrt(5) is an exact answer if that is what they are asking for. 4.472 is an approximation to the nearest thousandth. It would be 4.47 to the nearest hundredth or 4.5 to the nearest tenth.

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Which equation could generate the curve in the graph below?y=3x^2-2x+1
4vir4ik [10]
If you are asking what is the graph of y = 3x^2 -2x+1.

Then, the attached file would be the answer.

To check, b^2 - 4(a)(c), for each equation and use these facts:

If b^2 - 4(a)(c) = 0, there is only one real root meaning, the graph touches the x-axis only in one point.

If b^2 - 4ac > 0, there are two real roots meaning, the graph touches the x-axis in two different points.

If b2 - 4ac < 0, there are no real roots then the graph does not touch the x-axis. This would be the case for y = 3x^2 - 2x + 1.
Solution:
(-2)^2 -4(3)(1) = 4 - 12 = -8 < 0 will result in not real roots. 

7 0
3 years ago
Onii-Chan help me whit 5-8
lina2011 [118]
The answer to 5-8 is 3
4 0
3 years ago
In a scale drawing of an apartment 1 centimet represents 2 3/4 feet. If the length of the kitchen is 4 1/2cm on the scale drawin
weeeeeb [17]

Answer:

12 3/8 feet

Step-by-step explanation:

Because 4 1/2 times 2 3/4 equals 99/8, then 99 divided by 8 equals 12 3/8.

3 0
3 years ago
4.55 rounded to the nearest hundredth
mylen [45]

Answer:

its still 4.55

Step-by-step explanation:

I dont understand

7 0
3 years ago
Read 2 more answers
Please help. I’ve been here for hours and no one wants to help. I’ll give brainliest answer :(
irakobra [83]

1. D

2. J

3. L

4. A

5. B

6. K

7. C

8. I

9. F

10. G

Radius = Center to Perimeter of Circle

Minor Arc = Arc that goes around less than 1/2 of circle

Major Arc = Arc that goes around more than 1/2 of circle

Chord = The straight line segment between 2 points on a circle

Secant = A line that passes through 2 points on a circle

Semicircle = 1/2 Circle

Tangent = Line that touches 1 point on a circle's perimeter

Central Angle = Angle with a vertex at the center of a circle

Inscribed Angle = Angle whose 3 points (vertex & 2 other points) are on the outside of the circle

Right Angle = Angle with 90 degree measure

5 0
3 years ago
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