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Marat540 [252]
3 years ago
15

Can someone help me with this ? Find the missing coordinate of P, using the fact that P lies on the unit circle in the given qua

drant.
P(-7/25, ???), quadrant II: ...?
Mathematics
1 answer:
Alenkasestr [34]3 years ago
5 0
<span>What we can use here is the pythagorean theorem and you will see how can we solev this. You are given the x value and you also know that the equation of the circle can be written as x^2 + y^2 = r^2. Since this is a unit circle the equation that you are going to get is x^2 + y^2 = 1.
This equation describes your circle. Now put in the x value that you have:
(7/25)^2 + y^2 = 1
 and now rearrange the equation to solve for y.
 y^2 = 1 - (7/25)^2
 And then y = SQRT ( 1 - (7/25)^2 )
 So if you square root it you will get a positive and a negative answer.</span>Hence, you select a positive answer from your square root. Because we know that, since it is specified that the answer must lie in the second quadrant, then you know it has to be in the quadrant that has -x and a positive y.
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EleoNora [17]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
When I have walked 20% of the way to school, I have 1200 metres more to walk than when I have 20% of the walk remaining.
Orlov [11]

Given:

I have walked 20% of the way to school.

I have 1200 metres more to walk than when I have 20% of the walk remaining.

To find:

The distance from home to school.

Solution:

Let x be the distance from home to school.

I have already walked 20% of the way to school and i have 1200 metres more to walk than when I have 20% of the walk remaining.

It means 1200 is 100\%-20\%-20\%=60\% of the total distance from home to school.

1200=\dfrac{60}{100}x

1200=0.6x

\dfrac{1200}{0.6}=x

2000=x

Therefore, the distance from home to school is 2000  metres.

7 0
3 years ago
Find the slope of the line that passes through the points (–1, 6) and (2, 15)
11111nata11111 [884]

Answer:

m=3

Step-by-step explanation:

\frac{15-6}{2-(-1)} =\frac{9}{3} =3

7 0
3 years ago
Light can travel 1,339,200,000 miles in two hours. What is the speed of light in miles per hour?
Margarita [4]

Answer:

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Step-by-step explanation:

4 0
2 years ago
I need the measure of angle 6
NISA [10]

Answer:

125°

Step-by-step explanation:

x + 24 is equal to 1.

6 is equal to 4x + 1

1 and 4x + 1 = 180°

x + 24 + 4x + 1 = 180

4x + x + 24 + 1 = 180

5x + 25 = 180

5x = 180 - 25

5x = 155

5x/5 = 155/5

x = 31

(angle) 6 = 4x + 1

(angle) 6 = 4(31) + 1

(angle) 6 = 124 + 1

(angle) 6 = 125°

6 0
3 years ago
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