Which is a solution to (x – 3)(x + 9) = –27?

Mathematics

2 answers:

Anna007 [38]3 years ago

7 0

Answer:

If it's for ed2020 then the answer is C, x = 0

Step-by-step explanation:

hichkok12 [17]3 years ago

6 0

Hello there!

(x - 3)(x + 9) = -27
x² + 6x - 27 = -27
x² + 6x = -27 + 27
x² + 6x = 0
Factorize
x(x + 6) = 0
Now all we have to do is set the factors equal to 0
x = 0 or x+6 = 0
x = 0 or x = -6
Answer : x = 0 or x = -6

I don't know what the options they give you. But if you see 0 or 6 choose it.

I hope this help!

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A greeting card uses a geometric design containing 4 congruent kites. The card is 4 inches wide and 8 inches long. What is the a

Gnom [1K]

Answer: 4 sq. in

Step-by-step explanation:

From the question, the card is 8 inches long. Therefore, the length of the vertical diagonal of 1 kite + the length of the vertical diagonal of other kite = 8

Since we have been told that the kites are congruent, therefore the length of the vertical diagonal of both kites will be thesame

Therefore, 2(length of the vertical diagonal of 1 kite) = 8

Therefore, the length of the vertical diagonal of 1 kite will be= 4 inches

The width of the card = 4 inches

Therefore, the length of the horizontal diagonal of 1 kite + the length of the horizontal diagonal of another kite =4

Since the kites are congruent, therefore, the length of the horizontal diagonal of both kites are the same

Therefore, 2(length of the horizontal diagonal of 1 kite) = 4

Therefore, the length of the horizontal diagonal of 1 kite will be= 2 inches

Therefore, the length of the vertical diagonal of the kite= 4 inches and the horizontal diagonal= 2 inches

So, Area of kite = pq/2

Where p and q are diagonals of kite

Area of kite = (4×2)/2