3 years ago

Help help help!!!! #7 :(

1 answer:

7 0

${x}^{2} + 2x + {y }^{2} - 4y = 12 \\ ( {(x + 1)}^{2} - 1) + ( {(y - 2)}^{2} - 4) = 12 \\ {(x + 1) }^{2} + {(y - 2)}^{2} = 17 \\ so \: \: c \: ( - 1 \: \: 2)$

You might be interested in

Compare a number if it is decreased by 60% than increased by 80%.

gregori [183]

Answer:

Step-by-step explanation:

x decreased by 60% = (1-0.60)x = 0.40x

x increased by 80% = (1+0.80)x = 1.80x

8 0

2 years ago

Find the dimensions of a rectangle whose width is 7 miles less than its length and whose areas is 78 square miles.

tatuchka [14]

W = L - 7
WL = 78

(L-7)L = 78

L^2 - 7L - 78 = 0
Factorize: (L-13)(L+6) = 0

L = 13 or -6

A length cannot be negative, so the length must be 13 miles.
The width is 13-7 = 6 miles.

8 0

3 years ago

PLZ PLZ PLZ PLZ PLZ PLZ PLZ HELP!!!!!

Oksanka [162]

Answer:

equal

Step-by-step explanation:

just read

5 0

3 years ago

Read 2 more answers

Find the area!!!!!!!!!!