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AleksAgata [21]
3 years ago
14

Factor completely 49x^2-81.

Mathematics
1 answer:
Tasya [4]3 years ago
5 0

Answer:

C.

Step-by-step explanation:

Since both terms are perfect squares, factor using the difference of squares formula to get you the answer

(7x+9)(7x-9)

 

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The sum of the measures of two vertical
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Answer:

let \: one \: of \: the \: angles \: be \: x \\ x + x = 44 \\ 2x = 44 \\ x = 22 \degree

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What's 1+9 pls helpppppppp
skad [1K]
Your answer would be 10
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Help ill give brainliest and a thank you and 5 star if correct
Temka [501]

Answer:

85%

Step-by-step explanation:

The discount is 15% which we can write as 0.15 and we multiply that by 30 to get the discount, which is $4.50. We subtract that from the original price; 30 to get $25.50 as the sale price. We want to find out what percent of 30 25.50 is, so we divide 25.50 and 30 to get 0.85. Multiply that by 100 to get 85%.

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3 years ago
Romb ma obwód równy 32 cm. Jakie jest pole tego rombu, jeżeli jego wysokość ma 3 cm?
Goshia [24]

Answer:

24 cm²

Step-by-step explanation:

Z zadanego powyżej pytania uzyskano następujące dane:

Obwód (obwód) = 32 cm

Wysokość (h) = 3 cm

Obszar rombu (A) =?

Następnie określimy długość boku rombu. Można to uzyskać w następujący sposób:

Obwód, czyli obwód (P) = 32 cm

Strona (y) =?

P = 4 s

32 = 4 s

Podziel obie strony przez 4

s = 32/4

s = 8 cm

Stąd długość boku rombu wynosi 8 cm

Na koniec określimy obszar rombu w następujący sposób:

Długość boków = 8 cm

Wysokość (h) = 3 cm

Obszar rombu (A) =?

A = sh

A = 8 × 3

A = 24 cm²

Dlatego obszar rombu jest

24 cm².

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