3 years ago

The line x+2y=9 intersects the curve xy+18=0 at the points A and B. Find the coordinates of A and B

Mathematics

1 answer:

sleet_krkn [62]3 years ago

3 0

Using a graphing calculator they are (-3,6) and (12,-1.5)

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Volume & surface! May I please have help

Ludmilka [50]

Answer:

Step-by-step explanation:

surface area of cylinder

=(area of base)×2 + (area of curved surface)

$=(\frac{20}{2} )^{2} \pi$ × 2 + $20\pi$ × 25

=2 × $\pi$ × $10^{2}$ + 2 × $\pi$ × 10 × 25

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2 years ago

Solve x 2 + 9x + 8 = 0 by completing the square. What are the solutions?

vivado [14]

x^2+9x+8=0

(x+1)(x+8)=0

x+1=0

x=-1

x+8 = 0

x=-8

solutions are -1 and -8

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2 years ago

What is the greatest common factor of the terms of the polynomial −25y3 + 15y2 − 5y

Pavlova-9 [17]

Answer:

25 y 3−15 y 2−10 y ... 25y3 - 15y2 - 10y = 5y • (5y2 - 3y - 2) ... 5y • (y-1) Add up the last 2 terms, pulling out common factors : 2 • (y-1

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2 years ago

Please help (links will lead to a report)

mestny [16]

Answer:

the shaded part is 60% of the thing

Step-by-step explanation:

3/5 = 60%

6 0

2 years ago

Convert 0.25 with the 5 recurring to a fraction in its simplest form.

pentagon [3]

Answer:

Step-by-step explanation:

I'm taking this to mean

x = 0.255555555555... If this is not correct, leave a note. Multiply by 100

100 x = 25.55555555555555 ... Divide by 10

10x = 2.55555555555555 ... Subtract

90 x = 23

x = 23/90

Try putting 23/90 in your calculator. You will find it is 0.25555555... just what you were given

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2 years ago