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nignag [31]
3 years ago
14

The costs of 2 sound systems were decreased by $10. The original costs of the systems were $90 and $60. Without calculating, whi

ch had a greater percent of decrease? Explain.
Mathematics
1 answer:
bezimeni [28]3 years ago
4 0
The 60$ system had a greater percentage decrease because it was a lower number to begin with. Taking the same portion out of two different numbers will always be a greater decrease for the lower number.
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A store bought an oil painting and marked it up 25% from the original cost of $1,000. Later
worty [1.4K]

Answer:

1275

Step-by-step explanation:

1/4 of 1000 is 250

%2 of 1250 is 25

1275

3 0
3 years ago
Please help, Thanks for ur help let me know if you need help
KengaRu [80]

Answer:

(3u + 24) / (u + 9)

Step-by-step explanation:

6u + 72 / 2u + 24 ÷ u² + 21u + 108 / u² + 20u + 96

We'll begin by factorising u² + 21u + 108 and u² + 20u + 96. This can be obtained as follow:

u² + 21u + 108

Multiply u² and 108. The result is 108u². Find the factors of 108u² such that their sum will result to 21u. The factors are 12u and 9u.

u² + 12u + 9u + 108

u(u + 12) + 9(u + 12)

(u + 9)(u + 12)

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Multiply u² and 96. The result is 96u². Find the factors of 96u² such that their sum will result to 20u. The factors are 12u and 8u.

u² + 12u + 8u + 96

u(u + 12) + 8(u + 12)

(u + 8)(u + 12)

6u + 72 / 2u + 24 ÷ u² + 21u + 108 / u² + 20u + 96 =

6u + 72 / 2u + 24 ÷ (u + 9)(u + 12) / (u + 8)(u + 12) =

(6u + 72) / (2u + 24) × (u + 8)(u + 12) / (u + 9)(u + 12)

(6u + 72)(u + 8)(u + 12) / (2u + 24)(u + 9)(u + 12) =

(6u + 72)(u + 8) / (2u + 24)(u + 9) =

6(u + 12)(u + 8) / 2(u + 12)(u + 9) =

6(u + 8) / 2(u + 9) = 3(u + 8) / (u + 9)

= (3u + 24) / (u + 9)

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Answer: The answer is b because what is 1 number of person and the cost of the admission.

Step-by-step explanation:

5 0
4 years ago
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Step-by-step explanation:

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