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goldenfox [79]
3 years ago
10

Tuli is 10 years younger than Emily. The product of their

Mathematics
1 answer:
Naya [18.7K]3 years ago
3 0

Answer:

a² - 14a - 15 = 0 (quadratic equation)

Emily's age = 15 years

Tuli's age = 15 - 10 = 5 years

Step-by-step explanation:

let

Emily age = a

Tuli age =  a - 10

Two years ago their ages will be as follows.

Emily's age = a - 2

Tuli's age = a - 10 - 2 = a - 12

The product of their ages 2 years ago is 39.

(a - 2)(a - 12) = 39

a² - 12a - 2a + 24 - 39 = 0

a² - 14a - 15 = 0 (quadratic equation)

To get a

a² + a - 15a - 15 = 0

a(a + 1) - 15(a + 1)

(a + 1)(a - 15)

a = -1 or 15

we can only use 15 as it is positive.

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Answer:

$9.10

Step-by-step explanation:

455 \div 50 = 9.1

455 ÷ 50 = 9.1. The student tickets cost $9.10. (I think)

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3 years ago
micheal pays 30 to enter a state fair, plus 4 for each ride. which of the following equations represent his total cost
Shkiper50 [21]

Answer:

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Step-by-step explanation:

t = total

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8 0
3 years ago
PLEASE HELP I WILL GIVE BRAINLIEST
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Answer:

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Step-by-step explanation:

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3 0
2 years ago
Read 2 more answers
A brownie recipe calls 1 2/3 cups of nuts. Ethan wants to use only half of this amount.
7nadin3 [17]

c. 5/6 cups

Step-by-step explanation:

1 2/3 = 5/3

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Answer:

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I am also assuming you mean the real cube root because, as you may know, every non-zero real number has three cube root - one real and two complex conjugates.

Since 16 = 8 x 2 and 8 = 2³ then (2³ x 2)^1/3 = (2³)^1/3 x 2^1/3 = 2 x 2^1/3

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Step-by-step explanation:

6 0
3 years ago
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