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CaHeK987 [17]
3 years ago
8

How To work this out ?

Mathematics
1 answer:
MrMuchimi3 years ago
6 0
(a) Using the completing the square method, we need to write  into the form of  where , so
Expand to find the value of c
Notice that we get back the first two terms, the  and the .We need to get rid of the last term of '9' as the term was not in the original form. The final form will look like
Hence, 
(b)          
(c) , square root both sides      plus and minus of 2     Hence           
 
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VMariaS [17]

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Step-by-step explanation:

5 0
1 year ago
Write an equation in point slope form for a line that includes the origin and (9,-3)
aivan3 [116]
So we are given two points that the line crosses, the origin and (9, -3), we can calculate the slope m of the line with these data, dividing the y segment by the x segment:
m = (-3 - 0)/(9 - 0) = -3/9
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then we can use the point slope line equation to find the line equation, lets use the point origin (0,0) to do so:
y - y1 = m(x - x1), where x1, y1 are the coordinates of a point that the line crosses:
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3 0
2 years ago
What is the angle, in degrees, when the coordinate is <img src="https://tex.z-dn.net/?f=%28-%5Csqrt%7B2%7D%20%2F2%29%2C%20%5Csqr
Juliette [100K]

Answer:

135°

Step-by-step explanation:

seg AB=seg OB

tan ∠AOB = 1

∠AOB = 45°

∠AOC = 135°

8 0
2 years ago
2.268 nearest whole gram
MissTica

Answer:

It will be 2.27

Since the 8 in 2.268 is larger than 5, the 6 will turn to the next number. So, the answer will be 2.27.

8 0
3 years ago
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