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3 years ago

Evaluate 31 + 2x when x = 4.

Mathematics

2 answers:

alexira [117]3 years ago

8 0

It's 39. You multiply 2 and 4 first then you add

Korolek [52]3 years ago

3 0

X=4 so
2x=8
2x4=8
8+31 =39

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Read 2 more answers

Find an explicit formula for g(n)

Elina [12.6K]

Answer:

g(n) = 2n + 49

Step-by-step explanation:

The explicit formula for an arithmetic sequence is

g(n) = a₁ + (n - 1)d

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Given the recursive formula

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3 years ago

Alex’s printer can print 8 photos in 12 minutes.

Gre4nikov [31]

Answer:

$120\ minutes$

Step-by-step explanation:

step 1

Alex’s printer

we know that

print 8 photos in 12 minutes

by proportion

Find how long will it take the printer to print 120 photos

$\frac{12}{8}=\frac{x}{120}\\ \\x=120*12/8\\ \\x=180\ minutes$

step 2

Khalil’s printer

we know that

print 24 photos in 1 hour (60 minutes)

by proportion

Find how long will it take the printer to print 120 photos

$\frac{60}{24}=\frac{x}{120}\\ \\x=120*60/24\\ \\x=300\ minutes$

step 3

Find the difference

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7 0

3 years ago

Can someone please help me with this?!

Licemer1 [7]

Answer:

X/24 = 30/36

X = (30 X 24)/36

X = 5 X 4

X = 20

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3 years ago