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dangina [55]
3 years ago
13

Sam is 5 years old. His older brother Tom, is three times as old as Sam. When Sam is 20, how old will Tom be?

Mathematics
1 answer:
GrogVix [38]3 years ago
6 0

Answer:

60

Step-by-step explanation:

Sam is 5, Tom is 3 times as old, 5 times three is 15, so tom is 15, 20 is 4 times 5, so you take 15, and multiply it by 4, and that's your answer

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The correct factorization of 12x'2 - 157x - 40: A) (3x -8)(4x - 5) B) (3x - 40)(4x + 1) C) (12x - 1)(x + 40) D) (12x - 5)(x-8)​
irinina [24]

Answer:

B

Step-by-step explanation:

12x² - 157x - 40

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term

product = 12 × - 40 = - 480 and sum = - 157

The factors are + 3 and - 160

Use these factors to split the x- term

12x² + 3x - 160x - 40 ( factor the first/second and third/fourth terms

= 3x(4x + 1) - 40(4x + 1) ← factor out (4x + 1) from each term

= (4x + 1)(3x - 40) ← in factored form → B

8 0
3 years ago
While on a business trip to Richmond, Alexa treated her co-workers to a
Zinaida [17]

Answer:

<u>$192</u>

Step-by-step explanation:

5% = 0.05

160 x 0.05 = $8 (sales tax)

15% = 0.15

160 x 0.15 = %24 (tip)

$8 + $24 = 32

$160 + $32 = $192

7 0
3 years ago
Help pls!!!!!!!!!!!!!!!!!!!!!!!
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Answer:

x = -6

Step-by-step explanation:

50+x+46=90

x=90-50-46

x= -6

5 0
3 years ago
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