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olganol [36]
3 years ago
6

A bag contains yellow marbles and red marbles,42 in total. The number of yellow marbles is 3 more than 2 times the number of red

marbles. How many yellow marbles are there?
Mathematics
1 answer:
Shalnov [3]3 years ago
7 0

Answer:


Step-by-step explanation:


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The function f(x) = 2x + 510 represents the number of calories burned when exercising, where x is the number of hours spent exer
riadik2000 [5.3K]

Answer: 789 calories burned while combining diet with 2 hours of exercise

Step-by-step explanation:

we have that

f(x)=2x+510

g(x)=200x-125

we know that

(f+g)(x)=f(x)+g(x)

substitute

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(f+g)(x)=202x+385

Find (f+g)(2)

For x=2 hours

substitute

(f+g)(2)=202(2)+385

(f+g)(2)=789\ calories

therefore

The answer is

789 calories burned while combining diet with 2 hours of exercise

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